Update version

* Add HTTPUpdate class to pull updates from HTTP(S)
* Increase GH runners for pulls
WiFi builds and examples are taking some serious time now
* HTTPUpdate tests build on Pico W

.github/workflows/pull-request.yml

@@ -57,7 +57,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        chunk: [0, 1, 2, 3]
+        chunk: [0, 1, 2, 3, 4, 5]
     steps:
     - uses: actions/checkout@v3
       with:
@@ -76,7 +76,7 @@ jobs:
         TRAVIS_BUILD_DIR: ${{ github.workspace }}
         TRAVIS_TAG: ${{ github.ref }}
         BUILD_PARITY: custom
-        mod: 4
+        mod: 6
         rem: ${{ matrix.chunk }}
       run: |
         cd pico-sdk

cores/rp2040/FS.h

@@ -50,7 +50,9 @@ enum SeekMode {
 
 class File : public Stream {
 public:
-    File(FileImplPtr p = FileImplPtr(), FS *baseFS = nullptr) : _p(p), _fakeDir(nullptr), _baseFS(baseFS) { }
+    File(FileImplPtr p = FileImplPtr(), FS *baseFS = nullptr) : _p(p), _fakeDir(nullptr), _baseFS(baseFS) {
+        _startMillis = millis(); /* workaround -O3 spurious warning #768 */
+    }
 
     // Print methods:
     size_t write(uint8_t) override;

cores/rp2040/RP2040Support.h

@@ -314,7 +314,10 @@ public:
     }
 
     void reboot() {
-        watchdog_reboot(0, 0, 100);
+        watchdog_reboot(0, 0, 10);
+        while (1) {
+            continue;
+        }
     }
 
     inline void restart() {

cores/rp2040/RP2040Version.h

@@ -1,5 +1,5 @@
 #pragma once
 #define ARDUINO_PICO_MAJOR 2
 #define ARDUINO_PICO_MINOR 4
-#define ARDUINO_PICO_REVISION 0
-#define ARDUINO_PICO_VERSION_STR "2.4.0"
+#define ARDUINO_PICO_REVISION 1
+#define ARDUINO_PICO_VERSION_STR "2.4.1"

cores/rp2040/sdkoverride/cyw43_arch_threadsafe_background.c

@@ -36,7 +36,6 @@
 #define CYW43_WL_GPIO_LED_PIN 0
 #endif
 
-
 volatile bool __inLWIP = false;
 
 // note same code

docs/conf.py

@@ -54,9 +54,9 @@ author = u'Earle F. Philhower, III'
 # built documents.
 #
 # The short X.Y version.
-version = u'2.4.0'
+version = u'2.4.1'
 # The full version, including alpha/beta/rc tags.
-release = u'2.4.0'
+release = u'2.4.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

docs/fs.rst

@@ -98,9 +98,19 @@ The included ``SD`` library is the Arduino standard one.  Please refer to
 the [Arduino SD reference](https://www.arduino.cc/en/reference/SD) for
 more information.
 
+Using Second SPI port for SD
+----------------------------
+The ``SD`` library ``begin()`` has been modified to allow you to use the
+second SPI port, ``SPI1``.  Just use the following call in place of
+``SD.begin(cspin)``
+
+.. code:: cpp
+
+    SD.begin(cspin, SPI1);
+
 
 File system object (LittleFS/SD/SDFS)
---------------------------------------------
+-------------------------------------
 
 setConfig
 ~~~~~~~~~

docs/httpclient.rst

@@ -0,0 +1,40 @@
+HTTPClient Library
+==================
+
+A simple HTTP requestor that can handle both HTTP and HTTP requests is
+included as the ``HTTPClient`` library.
+
+Check the examples for use under HTTP and HTTPS configurations.  In general,
+for HTTP connections (unsecured and very uncommon on the internet today) simply
+passing in a URL and performiung a GET is sufficient to transfer data.
+
+.. code:: cpp
+
+    // Error checking is left as an exercise for the reader...
+    HTTPClient http;
+    if (http.begin("http://my.server/url")) {
+        if (http.GET() > 0) {
+            String data = http.getString();
+        }
+        http.end();
+    }
+
+For HTTPS connections, simply add the appropriate WiFiClientSecure calls
+as needed (i.e. ``setInsecure()``, ``setTrustAnchor``, etc.).  See the
+WiFiClientSecure documentation for more details.
+
+.. code:: cpp
+
+    // Error checking is left as an exercise for the reader...
+    HTTPClient https;
+    https.setInsecure(); // Use certs, but do not check their authenticity
+    if (https.begin("https://my.secure.server/url")) {
+        if (http.GET() > 0) {
+            String data = http.getString();
+        }
+        http.end();
+    }
+
+Unlike the ESP8266 and ESP32 ``HTTPClient`` implementations it is not necessary
+to create a ``WiFiClient`` or ``WiFiClientSecure`` to pass in to the ``HTTPClient``
+object.

docs/ide.rst

@@ -38,7 +38,7 @@ for normal operations.
 Generic RP2040 Support
 ----------------------
 If your RP2040 board isn't in the menus you can still use it with the
-IDE bu using the `Board->Generic RP2040` menu option.  You will need to
+IDE by using the `Board->Generic RP2040` menu option.  You will need to
 then set the flash size (see above) and tell the IDE how to communicate
 with the flash chip using the `Tools->Boot Stage 2` menu.
 

docs/index.rst

@@ -50,6 +50,8 @@ For the latest version, always check https://github.com/earlephilhower/arduino-p
    WiFiClientSecure (TLS/SSL/HTTPS) <bearssl-client-secure-class>
    WiFiServerSecure (TLS/SSL/HTTPS) <bearssl-server-secure-class>
 
+   HTTP/HTTPS Client <httpclient>
+
    Over-the-Air (OTA) Updates <ota>
 
    Ported/Optimized Libraries <libraries>

docs/install.rst

@@ -5,7 +5,7 @@ The Arduino-Pico core can be installed using the Arduino IDE Boards Manager
 or using `git`.  If you want to simply write programs for your RP2040 board,
 the Boards Manager installation will suffice, but if you want to try the
 latest pre-release versions and submit improvements, you will need the `git`
-instllation.
+installation.
 
 Installing via Arduino Boards Manager
 -------------------------------------

docs/ota.rst

@@ -233,7 +233,7 @@ A firmware file is uploaded via any method (Ethernet, WiFi, serial ZModem, etc.)
 
 The ROM layout consists of:
 
-... code:
+.. code:: cpp
 
     [boot2.S] [OTA Bootloader] [0-pad] [OTA partition table] [Main sketch] [LittleFS filesystem] [EEPROM]
 

docs/wifi.rst

@@ -1,7 +1,7 @@
 WiFi (Raspberry Pi Pico W) Support
 ==================================
 
-WiFi is supported on the Raspberry Pi Pico W by selecting the "Raspbery Pi Pico W" board in the Boards Manager.  It is generally compatible with the `Arduino WiFi library <https://www.arduino.cc/en/Reference/WiFi>`__ and the `ESP8266 Arduino WiFi library <https://github.com/esp8266/Arduino>`__.
+WiFi is supported on the Raspberry Pi Pico W by selecting the "Raspberry Pi Pico W" board in the Boards Manager.  It is generally compatible with the `Arduino WiFi library <https://www.arduino.cc/en/Reference/WiFi>`__ and the `ESP8266 Arduino WiFi library <https://github.com/esp8266/Arduino>`__.
 
 Enable WiFi support by selecting the `Raspberry Pi Pico W` board in the IDE and adding ``#include <WiFi.h>`` in your sketch.
 

keywords.txt

@@ -2,6 +2,8 @@
 # Syntax Coloring Map
 #######################################
 
+Arduino	KEYWORD3		RESERVED_WORD
+
 #######################################
 # Datatypes (KEYWORD1)
 #######################################

libraries/ArduinoOTA/src/ArduinoOTA.cpp

@@ -243,6 +243,19 @@ void ArduinoOTAClass::_onRx() {
 void ArduinoOTAClass::_runUpdate() {
     IPAddress ota_ip = _ota_ip;
 
+    if (!LittleFS.begin()) {
+#ifdef OTA_DEBUG
+        OTA_DEBUG.println("LittleFS Begin Error");
+#endif
+        _udp_ota->append("ERR: ", 5);
+        _udp_ota->append("No Filesystem", 13);
+        _udp_ota->send(ota_ip, _ota_udp_port);
+        delay(100);
+        _udp_ota->listen(IP_ADDR_ANY, _port);
+        _state = OTA_IDLE;
+        return;
+    }
+
     if (!Update.begin(_size, _cmd)) {
 #ifdef OTA_DEBUG
         OTA_DEBUG.println("Update Begin Error");
@@ -261,15 +274,6 @@ void ArduinoOTAClass::_runUpdate() {
         _state = OTA_IDLE;
         return;
     }
-    if (!LittleFS.begin()) {
-        _udp_ota->append("ERR: ", 5);
-        _udp_ota->append("nofilesystem", 6);
-        _udp_ota->send(ota_ip, _ota_udp_port);
-        delay(100);
-        _udp_ota->listen(IP_ADDR_ANY, _port);
-        _state = OTA_IDLE;
-        return;
-    }
 
     _udp_ota->append("OK", 2);
     _udp_ota->send(ota_ip, _ota_udp_port);

libraries/DNSServer/keywords.txt

@@ -0,0 +1,45 @@
+#######################################
+# Syntax Coloring Map For DNSServer
+#######################################
+
+#######################################
+# Library (KEYWORD3)
+#######################################
+
+DNSServer	KEYWORD3		RESERVED_WORD
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+DNSReplyCode	KEYWORD1		DATA_TYPE
+DNSHeader	KEYWORD1		DATA_TYPE
+DNSServer	KEYWORD1		DATA_TYPE
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+processNextRequest	KEYWORD2
+setErrorReplyCode	KEYWORD2
+setTTL	KEYWORD2
+start	KEYWORD2
+stop	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+DNS_QR_QUERY	LITERAL1		RESERVED_WORD_2
+DNS_QR_RESPONSE	LITERAL1		RESERVED_WORD_2
+DNS_OPCODE_QUERY	LITERAL1		RESERVED_WORD_2
+MAX_DNSNAME_LENGTH	LITERAL1		RESERVED_WORD_2
+NoError	LITERAL1		RESERVED_WORD_2
+FormError	LITERAL1		RESERVED_WORD_2
+ServerFailure	LITERAL1		RESERVED_WORD_2
+NonExistentDomain	LITERAL1		RESERVED_WORD_2
+NotImplemented	LITERAL1		RESERVED_WORD_2
+Refused	LITERAL1		RESERVED_WORD_2
+YXDomain	LITERAL1		RESERVED_WORD_2
+YXRRSet	LITERAL1		RESERVED_WORD_2
+NXRRSet	LITERAL1		RESERVED_WORD_2

libraries/DNSServer/library.properties

@@ -0,0 +1,10 @@
+name=DNSServer
+version=1.1.1
+author=Kristijan Novoselić
+maintainer=Earle F. Philhower, III <earlephilhower@yahoo.com>
+sentence=A simple DNS server for ESP8266, ported to the Pico
+paragraph=This library implements a simple DNS server.
+category=Communication
+url=
+architectures=rp2040
+dot_a_linkage=true

libraries/DNSServer/src/DNSServer.cpp

@@ -0,0 +1,447 @@
+#include "WiFi.h"
+#include "DNSServer.h"
+#include <lwip/def.h>
+#include <Arduino.h>
+
+extern struct rst_info resetInfo;
+
+#ifdef DEBUG_ESP_PORT
+#define CONSOLE DEBUG_ESP_PORT
+#else
+#define CONSOLE Serial
+#endif
+
+#define _PRINTF(a, ...) printf(PSTR(a), ##__VA_ARGS__)
+#define _PRINT(a)       print(String(F(a)))
+#define _PRINTLN(a)     println(String(F(a)))
+#define _PRINTLN2(a, b) println(String(F(a)) + b )
+
+#define CONSOLE_PRINTF   CONSOLE._PRINTF
+#define CONSOLE_PRINT    CONSOLE._PRINT
+#define CONSOLE_PRINTLN  CONSOLE._PRINTLN
+#define CONSOLE_PRINTLN2 CONSOLE._PRINTLN2
+
+
+#ifdef DEBUG_DNSSERVER
+#define DEBUG_PRINTF    CONSOLE_PRINTF
+#define DEBUG_PRINT     CONSOLE_PRINT
+#define DEBUG_PRINTLN   CONSOLE_PRINTLN
+#define DEBUG_PRINTLN2  CONSOLE_PRINTLN2
+#define DBGLOG_FAIL     LOG_FAIL
+
+#define DEBUG_(...) do { (__VA_ARGS__); } while(false)
+#define DEBUG__(...) __VA_ARGS__
+#define LOG_FAIL(a, fmt, ...) do { if (!(a)) { CONSOLE.printf( PSTR(fmt " line: %d, function: %s\r\n"), ##__VA_ARGS__, __LINE__, __FUNCTION__ ); } } while(false);
+
+#else
+#define DEBUG_PRINTF(...) do { } while(false)
+#define DEBUG_PRINT(...) do { } while(false)
+#define DEBUG_PRINTLN(...) do { } while(false)
+#define DEBUG_PRINTLN2(...) do { } while(false)
+#define DEBUG_(...) do { } while(false)
+#define DEBUG__(...) do { } while(false)
+#define LOG_FAIL(a, ...) do { a; } while(false)
+#define DBGLOG_FAIL(...) do { } while(false)
+#endif
+
+#define DNS_HEADER_SIZE sizeof(DNSHeader)
+
+// Want to keep IDs unique across restarts and continquious
+static uint32_t _ids __attribute__((section(".noinit")));
+
+DNSServer::DNSServer()
+{
+  // I have observed that using 0 for captive and non-zero (600) when
+  // forwarding, will help Android devices recognize the change in connectivity.
+  // They will then report connected.
+  _ttl = lwip_htonl(60);
+
+  srand(rp2040.getCycleCount());
+  _ids = random(0, (1UL << 16) - 1);
+
+  _errorReplyCode = DNSReplyCode::NonExistentDomain;
+}
+
+void DNSServer::disableForwarder(const String &domainName, bool freeResources)
+{
+  _forwarder = false;
+  if (domainName != "") {
+    _domainName = domainName;
+    downcaseAndRemoveWwwPrefix(_domainName);
+  }
+  if (freeResources) {
+    _dns = (uint32_t)0;
+    if (_que) {
+      _que = nullptr;
+      DEBUG_PRINTF("from stop, deleted _que\r\n");
+      DEBUG_(({
+        if (_que_ov) {
+          DEBUG_PRINTLN2("DNS forwarder que overflow or no reply to request: ", (_que_ov));
+        }
+        if (_que_drop) {
+          DEBUG_PRINTLN2("DNS forwarder que wrapped, reply dropped: ", (_que_drop));
+        }
+      }));
+    }
+  }
+}
+
+bool DNSServer::enableForwarder(const String &domainName, const IPAddress &dns)
+{
+  disableForwarder(domainName, false); // Just happens to have the same logic needed here.
+
+  if (dns.isSet()) {
+    _dns = dns;
+  }
+
+  if (_dns.isSet()) {
+    if (!_que) {
+      _que = std::unique_ptr<DNSS_REQUESTER[]> (new (std::nothrow) DNSS_REQUESTER[kDNSSQueSize]);
+      DEBUG_PRINTF("Created new _que\r\n");
+      if (_que) {
+        for (size_t i = 0; i < kDNSSQueSize; i++) {
+          _que[i].ip = 0;
+        }
+        DEBUG_((_que_ov = 0));
+        DEBUG_((_que_drop = 0));
+      }
+    }
+    if (_que) {
+      _forwarder = true;
+    }
+  }
+  return _forwarder;
+}
+
+bool DNSServer::start(const uint16_t &port, const String &domainName,
+                     const IPAddress &resolvedIP, const IPAddress &dns)
+{
+  _port = (port) ? port : IANA_DNS_PORT;
+
+  _resolvedIP[0] = resolvedIP[0];
+  _resolvedIP[1] = resolvedIP[1];
+  _resolvedIP[2] = resolvedIP[2];
+  _resolvedIP[3] = resolvedIP[3];
+
+  if (!enableForwarder(domainName, dns) && (dns.isSet() || _dns.isSet())) {
+    return false;
+  }
+
+  return _udp.begin(_port) == 1;
+}
+
+void DNSServer::setErrorReplyCode(const DNSReplyCode &replyCode)
+{
+  _errorReplyCode = replyCode;
+}
+
+void DNSServer::setTTL(const uint32_t &ttl)
+{
+  _ttl = lwip_htonl(ttl);
+}
+
+uint32_t DNSServer::getTTL()
+{
+  return lwip_ntohl(_ttl);
+}
+
+void DNSServer::stop()
+{
+  _udp.stop();
+  disableForwarder("", true);
+}
+
+void DNSServer::downcaseAndRemoveWwwPrefix(String &domainName)
+{
+  domainName.toLowerCase();
+  if (domainName.startsWith("www."))
+      domainName.remove(0, 4);
+}
+
+void DNSServer::forwardReply(uint8_t *buffer, size_t length)
+{
+  if (!_forwarder || !_que) {
+    return;
+  }
+  DNSHeader *dnsHeader = (DNSHeader *)buffer;
+  uint16_t id = dnsHeader->ID;
+  // if (kDNSSQueSize <= (uint16_t)((uint16_t)_ids - id)) {
+  if ((uint16_t)kDNSSQueSize <= (uint16_t)_ids - id) {
+    DEBUG_((++_que_drop));
+    DEBUG_PRINTLN2("Forward reply ID: 0x", (String(id, HEX) + F(" dropped!")));
+    return;
+  }
+  size_t i = id & (kDNSSQueSize - 1);
+
+  // Drop duplicate packets
+  if (0 == _que[i].ip) {
+    DEBUG_PRINTLN2("Duplicate reply dropped ID: 0x", String(id, HEX));
+    return;
+  }
+  dnsHeader->ID = _que[i].id;
+  _udp.beginPacket(_que[i].ip, _que[i].port);
+  _udp.write(buffer, length);
+  _udp.endPacket();
+  DEBUG_PRINTLN2("Forward reply ID: 0x", (String(id, HEX) + F(" to ") + IPAddress(_que[i].ip).toString()));
+  _que[i].ip = 0; // This gets used to detect duplicate packets and overflow
+}
+
+void DNSServer::forwardRequest(uint8_t *buffer, size_t length)
+{
+  if (!_forwarder || !_dns.isSet() || !_que) {
+    return;
+  }
+  DNSHeader *dnsHeader = (DNSHeader *)buffer;
+  ++_ids;
+  size_t i = _ids & (kDNSSQueSize - 1);
+  DEBUG_(({
+    if (0  != _que[i].ip) {
+      ++_que_ov;
+    }
+  }));
+  _que[i].ip = _udp.remoteIP();
+  _que[i].port = _udp.remotePort();
+  _que[i].id = dnsHeader->ID;
+  dnsHeader->ID = (uint16_t)_ids;
+  _udp.beginPacket(_dns, IANA_DNS_PORT);
+  _udp.write(buffer, length);
+  _udp.endPacket();
+  DEBUG_PRINTLN2("Forward request ID: 0x", (String(dnsHeader->ID, HEX) + F(" to ") + _dns.toString()));
+}
+
+bool DNSServer::respondToRequest(uint8_t *buffer, size_t length)
+{
+  DNSHeader *dnsHeader;
+  uint8_t *query, *start;
+  const char *matchString;
+  size_t remaining, labelLength, queryLength;
+  uint16_t qtype, qclass;
+
+  dnsHeader = (DNSHeader *)buffer;
+
+  // Must be a query for us to do anything with it
+  if (dnsHeader->QR != DNS_QR_QUERY) {
+    return false;
+  }
+
+  // If operation is anything other than query, we don't do it
+  if (dnsHeader->OPCode != DNS_OPCODE_QUERY) {
+    replyWithError(dnsHeader, DNSReplyCode::NotImplemented);
+    return false;
+  }
+
+  // Only support requests containing single queries - everything else
+  // is badly defined
+  if (dnsHeader->QDCount != lwip_htons(1)) {
+    replyWithError(dnsHeader, DNSReplyCode::FormError);
+    return false;
+  }
+
+  // We must return a FormError in the case of a non-zero ARCount to
+  // be minimally compatible with EDNS resolvers
+  if (dnsHeader->ANCount != 0 || dnsHeader->NSCount != 0
+      || dnsHeader->ARCount != 0) {
+    replyWithError(dnsHeader, DNSReplyCode::FormError);
+    return false;
+  }
+
+  // Even if we're not going to use the query, we need to parse it
+  // so we can check the address type that's being queried
+
+  query = start = buffer + DNS_HEADER_SIZE;
+  remaining = length - DNS_HEADER_SIZE;
+  while (remaining != 0 && *start != 0) {
+    labelLength = *start;
+    if (labelLength + 1 > remaining) {
+      replyWithError(dnsHeader, DNSReplyCode::FormError);
+      return false;
+    }
+    remaining -= (labelLength + 1);
+    start += (labelLength + 1);
+  }
+
+  // 1 octet labelLength, 2 octet qtype, 2 octet qclass
+  if (remaining < 5)  {
+    replyWithError(dnsHeader, DNSReplyCode::FormError);
+    return false;
+  }
+
+  start += 1; // Skip the 0 length label that we found above
+
+  memcpy(&qtype, start, sizeof(qtype));
+  start += 2;
+  memcpy(&qclass, start, sizeof(qclass));
+  start += 2;
+
+  queryLength = start - query;
+
+  if (qclass != lwip_htons(DNS_QCLASS_ANY)
+      && qclass != lwip_htons(DNS_QCLASS_IN)) {
+    replyWithError(dnsHeader, DNSReplyCode::NonExistentDomain, query, queryLength);
+    return false;
+  }
+
+  if (qtype != lwip_htons(DNS_QTYPE_A)
+      && qtype != lwip_htons(DNS_QTYPE_ANY)) {
+    replyWithError(dnsHeader, DNSReplyCode::NonExistentDomain, query, queryLength);
+    return false;
+  }
+
+  // If we have no domain name configured, just return an error
+  if (_domainName == "") {
+    if (_forwarder) {
+      return true;
+    } else {
+      replyWithError(dnsHeader, _errorReplyCode, query, queryLength);
+      return false;
+    }
+  }
+
+  // If we're running with a wildcard we can just return a result now
+  if (_domainName == "*") {
+    DEBUG_PRINTF("dnsServer - replyWithIP\r\n");
+    replyWithIP(dnsHeader, query, queryLength);
+    return false;
+  }
+
+  matchString = _domainName.c_str();
+
+  start = query;
+
+  // If there's a leading 'www', skip it
+  if (*start == 3 && strncasecmp("www", (char *) start + 1, 3) == 0)
+      start += 4;
+
+  while (*start != 0) {
+    labelLength = *start;
+    start += 1;
+    while (labelLength > 0) {
+      if (tolower(*start) != *matchString) {
+        if (_forwarder) {
+          return true;
+        } else {
+          replyWithError(dnsHeader, _errorReplyCode, query, queryLength);
+          return false;
+        }
+      }
+      ++start;
+      ++matchString;
+      --labelLength;
+    }
+    if (*start == 0 && *matchString == '\0') {
+      replyWithIP(dnsHeader, query, queryLength);
+      return false;
+    }
+
+    if (*matchString != '.') {
+      replyWithError(dnsHeader, _errorReplyCode, query, queryLength);
+      return false;
+    }
+    ++matchString;
+  }
+
+  replyWithError(dnsHeader, _errorReplyCode, query, queryLength);
+  return false;
+}
+
+void DNSServer::processNextRequest()
+{
+  size_t currentPacketSize;
+
+  currentPacketSize = _udp.parsePacket();
+  if (currentPacketSize == 0)
+    return;
+
+  // The DNS RFC requires that DNS packets be less than 512 bytes in size,
+  // so just discard them if they are larger
+  if (currentPacketSize > MAX_DNS_PACKETSIZE)
+    return;
+
+  // If the packet size is smaller than the DNS header, then someone is
+  // messing with us
+  if (currentPacketSize < DNS_HEADER_SIZE)
+    return;
+
+  std::unique_ptr<uint8_t[]> buffer(new (std::nothrow) uint8_t[currentPacketSize]);
+  if (buffer == nullptr)
+    return;
+
+  _udp.read(buffer.get(), currentPacketSize);
+  if (_dns.isSet() && _udp.remoteIP() == _dns) {
+    // _forwarder may have been set to false; however, for now allow in-flight
+    // replies to finish. //??
+    forwardReply(buffer.get(), currentPacketSize);
+  } else
+  if (respondToRequest(buffer.get(), currentPacketSize)) {
+    forwardRequest(buffer.get(), currentPacketSize);
+  }
+}
+
+void DNSServer::writeNBOShort(uint16_t value)
+{
+   _udp.write((unsigned char *)&value, 2);
+}
+
+void DNSServer::replyWithIP(DNSHeader *dnsHeader,
+			    unsigned char * query,
+			    size_t queryLength)
+{
+  uint16_t value;
+
+  dnsHeader->QR = DNS_QR_RESPONSE;
+  dnsHeader->QDCount = lwip_htons(1);
+  dnsHeader->ANCount = lwip_htons(1);
+  dnsHeader->NSCount = 0;
+  dnsHeader->ARCount = 0;
+
+  _udp.beginPacket(_udp.remoteIP(), _udp.remotePort());
+  _udp.write((unsigned char *) dnsHeader, sizeof(DNSHeader));
+  _udp.write(query, queryLength);
+
+  // Rather than restate the name here, we use a pointer to the name contained
+  // in the query section. Pointers have the top two bits set.
+  value = 0xC000 | DNS_HEADER_SIZE;
+  writeNBOShort(lwip_htons(value));
+
+  // Answer is type A (an IPv4 address)
+  writeNBOShort(lwip_htons(DNS_QTYPE_A));
+
+  // Answer is in the Internet Class
+  writeNBOShort(lwip_htons(DNS_QCLASS_IN));
+
+  // Output TTL (already NBO)
+  _udp.write((unsigned char*)&_ttl, 4);
+
+  // Length of RData is 4 bytes (because, in this case, RData is IPv4)
+  writeNBOShort(lwip_htons(sizeof(_resolvedIP)));
+  _udp.write(_resolvedIP, sizeof(_resolvedIP));
+  _udp.endPacket();
+}
+
+void DNSServer::replyWithError(DNSHeader *dnsHeader,
+			       DNSReplyCode rcode,
+			       unsigned char *query,
+			       size_t queryLength)
+{
+  dnsHeader->QR = DNS_QR_RESPONSE;
+  dnsHeader->RCode = (unsigned char) rcode;
+  if (query)
+     dnsHeader->QDCount = lwip_htons(1);
+  else
+     dnsHeader->QDCount = 0;
+  dnsHeader->ANCount = 0;
+  dnsHeader->NSCount = 0;
+  dnsHeader->ARCount = 0;
+
+  _udp.beginPacket(_udp.remoteIP(), _udp.remotePort());
+  _udp.write((unsigned char *)dnsHeader, sizeof(DNSHeader));
+  if (query != NULL)
+     _udp.write(query, queryLength);
+  _udp.endPacket();
+}
+
+void DNSServer::replyWithError(DNSHeader *dnsHeader,
+			       DNSReplyCode rcode)
+{
+  replyWithError(dnsHeader, rcode, NULL, 0);
+}

libraries/DNSServer/src/DNSServer.h

@@ -0,0 +1,144 @@
+#ifndef DNSServer_h
+#define DNSServer_h
+
+#include <memory>
+#include <WiFiUdp.h>
+
+// #define DEBUG_DNSSERVER
+
+// https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt
+#ifndef IANA_DNS_PORT
+#define IANA_DNS_PORT 53        // AKA domain
+constexpr inline uint16_t kIanaDnsPort = IANA_DNS_PORT;
+#endif
+
+#define DNS_QR_QUERY 0
+#define DNS_QR_RESPONSE 1
+#define DNS_OPCODE_QUERY 0
+
+#define DNS_QCLASS_IN 1
+#define DNS_QCLASS_ANY 255
+
+#define DNS_QTYPE_A 1
+#define DNS_QTYPE_ANY 255
+
+#define MAX_DNSNAME_LENGTH 253
+#define MAX_DNS_PACKETSIZE 512
+
+enum class DNSReplyCode
+{
+  NoError = 0,
+  FormError = 1,
+  ServerFailure = 2,
+  NonExistentDomain = 3,
+  NotImplemented = 4,
+  Refused = 5,
+  YXDomain = 6,
+  YXRRSet = 7,
+  NXRRSet = 8
+};
+
+struct DNSHeader
+{
+  uint16_t ID;               // identification number
+  unsigned char RD : 1;      // recursion desired
+  unsigned char TC : 1;      // truncated message
+  unsigned char AA : 1;      // authoritative answer
+  unsigned char OPCode : 4;  // message_type
+  unsigned char QR : 1;      // query/response flag
+  unsigned char RCode : 4;   // response code
+  unsigned char Z : 3;       // its z! reserved
+  unsigned char RA : 1;      // recursion available
+  uint16_t QDCount;          // number of question entries
+  uint16_t ANCount;          // number of answer entries
+  uint16_t NSCount;          // number of authority entries
+  uint16_t ARCount;          // number of resource entries
+};
+
+constexpr inline size_t kDNSSQueSizeAddrBits = 3; // The number of bits used to address que entries
+constexpr inline size_t kDNSSQueSize =  (1UL << (kDNSSQueSizeAddrBits));
+
+struct DNSS_REQUESTER {
+  uint32_t ip;
+  uint16_t port;
+  uint16_t id;
+};
+
+class DNSServer
+{
+  public:
+    DNSServer();
+    ~DNSServer() {
+        stop();
+    };
+    /*
+      If specified, `enableForwarder` will update the `domainName` that is used
+      to match DNS request to this AP's IP Address. A non-matching request will
+      be forwarded to the DNS server specified by `dns`.
+
+      Returns `true` on success.
+
+      Returns `false`,
+        * when forwarding `dns` is not set, or
+        * unable to allocate resources for managing the DNS forward function.
+    */
+    bool enableForwarder(const String &domainName = String(""), const IPAddress &dns = (uint32_t)0);
+    /*
+      `disableForwarder` will stop forwarding DNS requests. If specified,
+      updates the `domainName` that is matched for returning this AP's IP Address.
+      Optionally, resources used for the DNS forward function can be freed.
+    */
+    void disableForwarder(const String &domainName = String(""), bool freeResources = false);
+    bool isForwarding() { return _forwarder && _dns.isSet(); }
+    void setDNS(const IPAddress& dns) { _dns = dns; }
+    IPAddress getDNS() { return _dns; }
+    bool isDNSSet() { return _dns.isSet(); }
+
+    void processNextRequest();
+    void setErrorReplyCode(const DNSReplyCode &replyCode);
+    void setTTL(const uint32_t &ttl);
+    uint32_t getTTL();
+    String getDomainName() { return _domainName; }
+
+    // Returns true if successful, false if there are no sockets available
+    bool start(const uint16_t &port,
+              const String &domainName,
+              const IPAddress &resolvedIP,
+              const IPAddress &dns = (uint32_t)0);
+    // stops the DNS server
+    void stop();
+
+  private:
+    WiFiUDP _udp;
+    String _domainName;
+    IPAddress _dns;
+    std::unique_ptr<DNSS_REQUESTER[]> _que;
+    uint32_t _ttl;
+#ifdef DEBUG_DNSSERVER
+    // There are 2 possibilities for overflow:
+    //   1) we have more than kDNSSQueSize request already outstanding.
+    //   2) we have request that never received a reply.
+    uint32_t _que_ov;
+    uint32_t _que_drop;
+#endif
+    DNSReplyCode _errorReplyCode;
+    bool _forwarder;
+    unsigned char _resolvedIP[4];
+    uint16_t _port;
+
+    void downcaseAndRemoveWwwPrefix(String &domainName);
+    void replyWithIP(DNSHeader *dnsHeader,
+		     unsigned char * query,
+		     size_t queryLength);
+    void replyWithError(DNSHeader *dnsHeader,
+			DNSReplyCode rcode,
+			unsigned char *query,
+			size_t queryLength);
+    void replyWithError(DNSHeader *dnsHeader,
+			DNSReplyCode rcode);
+    bool respondToRequest(uint8_t *buffer, size_t length);
+    void forwardRequest(uint8_t *buffer, size_t length);
+    void forwardReply(uint8_t *buffer, size_t length);
+    void writeNBOShort(uint16_t value);
+};
+#endif

libraries/EEPROM/EEPROM.h

@@ -62,6 +62,10 @@ public:
         return t;
     }
 
+    template<typename T>
+    const T &update(int const address, const T &t) {
+        return put(address, t);
+    }
     size_t length() {
         return _size;
     }

libraries/HTTPClient/examples/Authorization/Authorization.ino

@@ -0,0 +1,87 @@
+/**
+   Authorization.ino
+
+    Created on: 09.12.2015
+
+*/
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+  // Serial.setDebugOutput(true);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    HTTPClient http;
+    http.setInsecure();
+
+    Serial.print("[HTTP] begin...\n");
+    // configure traged server and url
+
+
+    http.begin("https://guest:guest@jigsaw.w3.org/HTTP/Basic/");
+
+    /*
+      // or
+      http.begin(client, "http://jigsaw.w3.org/HTTP/Basic/");
+      http.setAuthorization("guest", "guest");
+
+      // or
+      http.begin(client, "http://jigsaw.w3.org/HTTP/Basic/");
+      http.setAuthorization("Z3Vlc3Q6Z3Vlc3Q=");
+    */
+
+
+    Serial.print("[HTTP] GET...\n");
+    // start connection and send HTTP header
+    int httpCode = http.GET();
+
+    // httpCode will be negative on error
+    if (httpCode > 0) {
+      // HTTP header has been send and Server response header has been handled
+      Serial.printf("[HTTP] GET... code: %d\n", httpCode);
+
+      // file found at server
+      if (httpCode == HTTP_CODE_OK) {
+        String payload = http.getString();
+        Serial.println(payload);
+      }
+    } else {
+      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+    }
+
+    http.end();
+  }
+
+  delay(10000);
+}

libraries/HTTPClient/examples/BasicHttpClient/BasicHttpClient.ino

@@ -0,0 +1,75 @@
+/**
+   BasicHTTPClient.ino
+
+   Created on: 24.05.2015
+
+*/
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+  // Serial.setDebugOutput(true);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    HTTPClient http;
+
+    Serial.print("[HTTP] begin...\n");
+    if (http.begin("http://httpbin.org")) {  // HTTP
+
+
+      Serial.print("[HTTP] GET...\n");
+      // start connection and send HTTP header
+      int httpCode = http.GET();
+
+      // httpCode will be negative on error
+      if (httpCode > 0) {
+        // HTTP header has been send and Server response header has been handled
+        Serial.printf("[HTTP] GET... code: %d\n", httpCode);
+
+        // file found at server
+        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
+          String payload = http.getString();
+          Serial.println(payload);
+        }
+      } else {
+        Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+      }
+
+      http.end();
+    } else {
+      Serial.printf("[HTTP} Unable to connect\n");
+    }
+  }
+
+  delay(10000);
+}

libraries/HTTPClient/examples/BasicHttpsClient-Hard/BasicHttpsClient-Hard.ino

@@ -0,0 +1,80 @@
+/**
+   BasicHTTPSClient-Hard.ino
+
+   Demonstrates the manual way of making a WiFiClient and passing it in to the HTTPClient
+
+   Created on: 20.08.2018
+
+*/
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    WiFiClientSecure client;
+    client.setInsecure(); // Not safe against MITM attacks
+
+    HTTPClient https;
+
+    Serial.print("[HTTPS] begin...\n");
+    if (https.begin(client, "https://jigsaw.w3.org/HTTP/connection.html")) {  // HTTPS
+
+      Serial.print("[HTTPS] GET...\n");
+      // start connection and send HTTP header
+      int httpCode = https.GET();
+
+      // httpCode will be negative on error
+      if (httpCode > 0) {
+        // HTTP header has been send and Server response header has been handled
+        Serial.printf("[HTTPS] GET... code: %d\n", httpCode);
+
+        // file found at server
+        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
+          String payload = https.getString();
+          Serial.println(payload);
+        }
+      } else {
+        Serial.printf("[HTTPS] GET... failed, error: %s\n", https.errorToString(httpCode).c_str());
+      }
+
+      https.end();
+    } else {
+      Serial.printf("[HTTPS] Unable to connect\n");
+    }
+  }
+
+  Serial.println("Wait 10s before next round...");
+  delay(10000);
+}

libraries/HTTPClient/examples/BasicHttpsClient/BasicHttpsClient.ino

@@ -0,0 +1,125 @@
+/**
+   BasicHTTPSClient.ino
+
+    Created on: 20.08.2018
+
+*/
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+  // Serial.setDebugOutput(true);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+const char *jigsaw_cert = R"EOF(
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+)EOF";
+
+static int cnt = 0;
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+    HTTPClient https;
+    switch (cnt) {
+      case 0:
+        Serial.println("[HTTPS] using insecure SSL, not validating certificate");
+        https.setInsecure(); // Note this is unsafe against MITM attacks
+        cnt++;
+        break;
+      case 1:
+        Serial.println("[HTTPS] using secure SSL, validating certificate");
+        https.setCACert(jigsaw_cert);
+        cnt++;
+        break;
+      default:
+        Serial.println("[HTTPS] not setting any SSL verification settings, will fail");
+        cnt = 0;
+    }
+
+    Serial.print("[HTTPS] begin...\n");
+    if (https.begin("https://jigsaw.w3.org/HTTP/connection.html")) {  // HTTPS
+
+      Serial.print("[HTTPS] GET...\n");
+      // start connection and send HTTP header
+      int httpCode = https.GET();
+
+      // httpCode will be negative on error
+      if (httpCode > 0) {
+        // HTTP header has been send and Server response header has been handled
+        Serial.printf("[HTTPS] GET... code: %d\n", httpCode);
+
+        // file found at server
+        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
+          String payload = https.getString();
+          Serial.println(payload);
+        }
+      } else {
+        Serial.printf("[HTTPS] GET... failed, error: %s\n", https.errorToString(httpCode).c_str());
+      }
+
+      https.end();
+    } else {
+      Serial.printf("[HTTPS] Unable to connect\n");
+    }
+  }
+
+  Serial.println("Wait 10s before next round...");
+  delay(10000);
+}

libraries/HTTPClient/examples/ChunkedClient/ChunkedClient.ino

@@ -0,0 +1,75 @@
+/**
+   ChunkedClient.ino
+
+*/
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+  // Serial.setDebugOutput(true);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+    HTTPClient http;
+
+    Serial.print("[HTTP] begin...\n");
+    if (http.begin("http://anglesharp.azurewebsites.net/Chunked")) {
+
+      Serial.print("[HTTP] GET...\n");
+      // start connection and send HTTP header
+      int httpCode = http.GET();
+
+      // httpCode will be negative on error
+      if (httpCode > 0) {
+        // HTTP header has been send and Server response header has been handled
+        Serial.printf("[HTTP] GET... code: %d\n", httpCode);
+
+        // file found at server
+        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
+          String payload = http.getString();
+          Serial.println(payload);
+        }
+      } else {
+        Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+      }
+
+      http.end();
+    } else {
+      Serial.printf("[HTTP] Unable to connect\n");
+    }
+  }
+
+  Serial.println("Wait forever...");
+  while (1) {
+    continue;
+  }
+}

libraries/HTTPClient/examples/DigestAuthorization/DigestAuthorization.ino

@@ -0,0 +1,140 @@
+/*
+    This sketch shows how to handle HTTP Digest Authorization.
+
+    Written by Parham Alvani and Sajjad Rahnama, 2018-01-07.
+
+   This example is released into public domain,
+   or, at your option, CC0 licensed.
+*/
+
+#include <WiFi.h>
+
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "NOBABIES"
+#define STAPSK "ElephantsAreGreat"
+#endif
+
+const char* ssid = STASSID;
+const char* ssidPassword = STAPSK;
+
+const char* username = "admin";
+const char* password = "admin";
+
+const char* server = "http://httpbin.org";
+const char* uri = "/digest-auth/auth/admin/admin/MD5";
+
+String exractParam(String& authReq, const String& param, const char delimit) {
+  int _begin = authReq.indexOf(param);
+  if (_begin == -1) {
+    return "";
+  }
+  return authReq.substring(_begin + param.length(), authReq.indexOf(delimit, _begin + param.length()));
+}
+
+String getCNonce(const int len) {
+  static const char alphanum[] = "0123456789"
+                                 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                                 "abcdefghijklmnopqrstuvwxyz";
+  String s = "";
+
+  for (int i = 0; i < len; ++i) {
+    s += alphanum[rand() % (sizeof(alphanum) - 1)];
+  }
+
+  return s;
+}
+
+String getDigestAuth(String& authReq, const String& username, const String& password, const String& method, const String& uri, unsigned int counter) {
+  // extracting required parameters for RFC 2069 simpler Digest
+  String realm = exractParam(authReq, "realm=\"", '"');
+  String nonce = exractParam(authReq, "nonce=\"", '"');
+  String cNonce = getCNonce(8);
+
+  char nc[9];
+  snprintf(nc, sizeof(nc), "%08x", counter);
+
+  // parameters for the RFC 2617 newer Digest
+  MD5Builder md5;
+  md5.begin();
+  md5.add(username + ":" + realm + ":" + password);  // md5 of the user:realm:user
+  md5.calculate();
+  String h1 = md5.toString();
+
+  md5.begin();
+  md5.add(method + ":" + uri);
+  md5.calculate();
+  String h2 = md5.toString();
+
+  md5.begin();
+  md5.add(h1 + ":" + nonce + ":" + String(nc) + ":" + cNonce + ":" + "auth" + ":" + h2);
+  md5.calculate();
+  String response = md5.toString();
+
+  String authorization = "Digest username=\"" + username + "\", realm=\"" + realm + "\", nonce=\"" + nonce + "\", uri=\"" + uri + "\", algorithm=\"MD5\", qop=auth, nc=" + String(nc) + ", cnonce=\"" + cNonce + "\", response=\"" + response + "\"";
+  Serial.println(authorization);
+
+  return authorization;
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, ssidPassword);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  srand(rp2040.getCycleCount());
+}
+
+void loop() {
+  HTTPClient http;
+
+  Serial.print("[HTTP] begin...\n");
+
+  // configure target server and url
+  http.begin(String(server) + String(uri));
+
+
+  const char* keys[] = { "WWW-Authenticate" };
+  http.collectHeaders(keys, 1);
+
+  Serial.print("[HTTP] GET...\n");
+  // start connection and send HTTP header
+  int httpCode = http.GET();
+
+  if (httpCode > 0) {
+    String authReq = http.header("WWW-Authenticate");
+    Serial.println(authReq);
+
+    String authorization = getDigestAuth(authReq, String(username), String(password), "GET", String(uri), 1);
+
+    http.end();
+    http.begin(String(server) + String(uri));
+
+    http.addHeader("Authorization", authorization);
+
+    int httpCode = http.GET();
+    if (httpCode > 0) {
+      String payload = http.getString();
+      Serial.println(payload);
+    } else {
+      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+    }
+  } else {
+    Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+  }
+
+  http.end();
+  delay(10000);
+}

libraries/HTTPClient/examples/PostHttpClient/PostHttpClient.ino

@@ -0,0 +1,71 @@
+/**
+   PostHTTPClient.ino
+
+    Created on: 21.11.2016
+
+*/
+
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+void setup() {
+
+  Serial.begin(115200);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  WiFi.begin(STASSID, STAPSK);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.print("Connected! IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFi.status() == WL_CONNECTED)) {
+
+    HTTPClient http;
+    http.setInsecure();
+
+    Serial.print("[HTTP] begin...\n");
+    // configure target server and url
+    http.begin("https://httpbin.org/post");
+    http.addHeader("Content-Type", "application/json");
+
+    Serial.print("[HTTP] POST...\n");
+    // start connection and send HTTP header and body
+    int httpCode = http.POST("{\"hello\":\"world\"}");
+
+    // httpCode will be negative on error
+    if (httpCode > 0) {
+      // HTTP header has been send and Server response header has been handled
+      Serial.printf("[HTTP] POST... code: %d\n", httpCode);
+
+      // file found at server
+      if (httpCode == HTTP_CODE_OK) {
+        const String& payload = http.getString();
+        Serial.println("received payload:\n<<");
+        Serial.println(payload);
+        Serial.println(">>");
+      }
+    } else {
+      Serial.printf("[HTTP] POST... failed, error: %s\n", http.errorToString(httpCode).c_str());
+    }
+
+    http.end();
+  }
+
+  delay(10000);
+}

libraries/HTTPClient/examples/ReuseConnectionV2/ReuseConnectionV2.ino

@@ -0,0 +1,81 @@
+/**
+   reuseConnectionV2.ino
+
+    Created on: 22.11.2015
+
+   This example reuses the http connection and also restores the connection if the connection is lost
+*/
+
+
+#include <WiFi.h>
+#include <WiFiMulti.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+WiFiMulti WiFiMulti;
+
+HTTPClient http;
+
+void setup() {
+
+  Serial.begin(115200);
+  // Serial.setDebugOutput(true);
+
+  Serial.println();
+  Serial.println();
+  Serial.println("Connecting to WiFi...");
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(STASSID, STAPSK);
+
+  // wait for WiFi connection
+  while ((WiFiMulti.run() != WL_CONNECTED)) {
+    Serial.write('.');
+    delay(500);
+  }
+  Serial.println(" connected to WiFi");
+
+  // allow reuse (if server supports it)
+  http.setReuse(true);
+  http.setInsecure();
+
+  http.begin("https://jigsaw.w3.org/HTTP/connection.html");
+  // http.begin(client, "jigsaw.w3.org", 80, "/HTTP/connection.html");
+}
+
+int pass = 0;
+
+void loop() {
+  // First 10 loop()s, retrieve the URL
+  if (pass < 10) {
+    pass++;
+    Serial.printf("Reuse connection example, GET url for the %d time\n", pass);
+    int httpCode = http.GET();
+    if (httpCode > 0) {
+      Serial.printf("[HTTP] GET... code: %d\n", httpCode);
+
+      // file found at server
+      if (httpCode == HTTP_CODE_OK) {
+        http.writeToStream(&Serial);
+      }
+    } else {
+      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+      // Something went wrong with the connection, try to reconnect
+      http.end();
+      http.begin("https://jigsaw.w3.org/HTTP/connection.html");
+      // http.begin(client, "jigsaw.w3.org", 80, "/HTTP/connection.html");
+    }
+
+    if (pass == 10) {
+      http.end();
+      Serial.println("Done testing");
+    } else {
+      Serial.println("\n\n\nWait 5 second...\n");
+      delay(5000);
+    }
+  }
+}

libraries/HTTPClient/examples/StreamHttpsClient/StreamHttpsClient.ino

@@ -0,0 +1,105 @@
+/**
+   StreamHTTPClient.ino
+
+    Created on: 24.05.2015
+
+*/
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+  // Serial.setDebugOutput(true);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    Serial.print("[HTTPS] begin...\n");
+
+    // configure server and url
+    const char *fp = "41:FA:FD:B6:96:5F:33:09:F4:ED:09:28:BF:66:4D:5B:A2:88:03:65";
+
+    HTTPClient https;
+    https.setFingerprint(fp);
+
+    if (https.begin("https://www.trustedfirmware.org/projects/mbed-tls")) {
+
+      Serial.print("[HTTPS] GET...\n");
+      // start connection and send HTTP header
+      int httpCode = https.GET();
+      if (httpCode > 0) {
+        // HTTP header has been send and Server response header has been handled
+        Serial.printf("[HTTPS] GET... code: %d\n", httpCode);
+
+        // file found at server
+        if (httpCode == HTTP_CODE_OK) {
+
+          // get length of document (is -1 when Server sends no Content-Length header)
+          int len = https.getSize();
+
+          // create buffer for read
+          static uint8_t buff[128] = { 0 };
+
+          // read all data from server
+          while (https.connected() && (len > 0 || len == -1)) {
+            // get available data size
+            size_t size = https.getStreamPtr()->available();
+
+            if (size) {
+              // read up to 128 byte
+              int c = https.getStreamPtr()->readBytes(buff, ((size > sizeof(buff)) ? sizeof(buff) : size));
+
+              // write it to Serial
+              Serial.write(buff, c);
+
+              if (len > 0) {
+                len -= c;
+              }
+            }
+            delay(1);
+          }
+
+          Serial.println();
+          Serial.print("[HTTPS] connection closed or file end.\n");
+        }
+      } else {
+        Serial.printf("[HTTPS] GET... failed, error: %s\n", https.errorToString(httpCode).c_str());
+      }
+
+      https.end();
+    } else {
+      Serial.printf("Unable to connect\n");
+    }
+  }
+
+  Serial.println("Wait 10s before the next round...");
+  delay(10000);
+}

libraries/HTTPClient/keywords.txt

@@ -0,0 +1,149 @@
+#######################################
+# Syntax Coloring Map For HTTPClient
+#######################################
+
+#######################################
+# Library (KEYWORD3)
+#######################################
+
+HTTPClient	KEYWORD3		RESERVED_WORD
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+t_http_codes	KEYWORD1		DATA_TYPE
+transferEncoding_t	KEYWORD1		DATA_TYPE
+TransportTraits	KEYWORD1		DATA_TYPE
+TransportTraitsPtr	KEYWORD1		DATA_TYPE
+StreamString	KEYWORD1		DATA_TYPE
+HTTPClient	KEYWORD1		DATA_TYPE
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+begin	KEYWORD2
+end	KEYWORD2
+connected	KEYWORD2
+setReuse	KEYWORD2
+setUserAgent	KEYWORD2
+setAuthorization	KEYWORD2
+setTimeout	KEYWORD2
+useHTTP10	KEYWORD2
+GET	KEYWORD2
+POST	KEYWORD2
+PUT	KEYWORD2
+PATCH	KEYWORD2
+sendRequest	KEYWORD2
+addHeader	KEYWORD2
+collectHeaders	KEYWORD2
+header	KEYWORD2
+headerName	KEYWORD2
+headers	KEYWORD2
+hasHeader	KEYWORD2
+getSize	KEYWORD2
+getStream	KEYWORD2
+getStreamPtr	KEYWORD2
+writeToStream	KEYWORD2
+getString	KEYWORD2
+errorToString	KEYWORD2
+
+setSession	KEYWORD2
+setInsecure	KEYWORD2
+setKnownKey	KEYWORD2
+setFingerprint	KEYWORD2
+allowSelfSignedCerts	KEYWORD2
+setTrustAnchors	KEYWORD2
+setX509Time	KEYWORD2
+setClientRSACert	KEYWORD2
+setClientECCert	KEYWORD2
+setBufferSizes	KEYWORD2
+setCertStore	KEYWORD2
+setCiphers	KEYWORD2
+setCiphersLessSecure	KEYWORD2
+setSSLVersion	KEYWORD2
+setCACert	KEYWORD2
+setCertificate	KEYWORD2
+setPrivateKey	KEYWORD2
+loadCACert	KEYWORD2
+loadCertificate	KEYWORD2
+loadPrivateKey	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+HTTPCLIENT_DEFAULT_TCP_TIMEOUT	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_CONNECTION_REFUSED	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_SEND_HEADER_FAILED	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_SEND_PAYLOAD_FAILED	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_NOT_CONNECTED	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_CONNECTION_LOST	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_NO_STREAM	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_NO_HTTP_SERVER	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_TOO_LESS_RAM	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_ENCODING	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_STREAM_WRITE	LITERAL1		RESERVED_WORD_2
+HTTPC_ERROR_READ_TIMEOUT	LITERAL1		RESERVED_WORD_2
+HTTP_TCP_BUFFER_SIZE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_CONTINUE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_SWITCHING_PROTOCOLS	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PROCESSING	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_OK	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_CREATED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_ACCEPTED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NON_AUTHORITATIVE_INFORMATION	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NO_CONTENT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_RESET_CONTENT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PARTIAL_CONTENT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_MULTI_STATUS	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_ALREADY_REPORTED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_IM_USED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_MULTIPLE_CHOICES	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_MOVED_PERMANENTLY	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_FOUND	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_SEE_OTHER	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NOT_MODIFIED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_USE_PROXY	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_TEMPORARY_REDIRECT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PERMANENT_REDIRECT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_BAD_REQUEST	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_UNAUTHORIZED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PAYMENT_REQUIRED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_FORBIDDEN	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NOT_FOUND	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_METHOD_NOT_ALLOWED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NOT_ACCEPTABLE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PROXY_AUTHENTICATION_REQUIRED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_REQUEST_TIMEOUT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_CONFLICT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_GONE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_LENGTH_REQUIRED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PRECONDITION_FAILED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PAYLOAD_TOO_LARGE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_URI_TOO_LONG	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_UNSUPPORTED_MEDIA_TYPE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_RANGE_NOT_SATISFIABLE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_EXPECTATION_FAILED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_MISDIRECTED_REQUEST	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_UNPROCESSABLE_ENTITY	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_LOCKED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_FAILED_DEPENDENCY	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_UPGRADE_REQUIRED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_PRECONDITION_REQUIRED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_TOO_MANY_REQUESTS	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_INTERNAL_SERVER_ERROR	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NOT_IMPLEMENTED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_BAD_GATEWAY	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_SERVICE_UNAVAILABLE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_GATEWAY_TIMEOUT	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_HTTP_VERSION_NOT_SUPPORTED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_VARIANT_ALSO_NEGOTIATES	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_INSUFFICIENT_STORAGE	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_LOOP_DETECTED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NOT_EXTENDED	LITERAL1		RESERVED_WORD_2
+HTTP_CODE_NETWORK_AUTHENTICATION_REQUIRED	LITERAL1		RESERVED_WORD_2
+HTTPC_TE_IDENTITY	LITERAL1		RESERVED_WORD_2
+HTTPC_TE_CHUNKED	LITERAL1		RESERVED_WORD_2

libraries/HTTPClient/library.properties

@@ -0,0 +1,10 @@
+name=HTTPClient
+version=1.2
+author=Markus Sattler
+maintainer=Earle F. Philhower, III <earlephilhower@yahoo.com>
+sentence=http Client for ESP8266, portes to the Pico
+paragraph=
+category=Communication
+url=https://github.com/earlephilhower/arduino-pico/blob/master/libraries/HTTPClient
+architectures=rp2040
+dot_a_linkage=true

libraries/HTTPClient/src/HTTPClient.h

@@ -0,0 +1,373 @@
+/**
+    HTTPClient.h
+
+    Modified 2022 by Earle F. Philhower, III
+
+    Created on: 02.11.2015
+
+    Copyright (c) 2015 Markus Sattler. All rights reserved.
+    This file is part of the ESP8266HTTPClient for Arduino.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Modified by Jeroen Döll, June 2018
+*/
+
+#pragma once
+
+#include <Arduino.h>
+#include <StreamString.h>
+#include <WiFiClient.h>
+#include <WiFiClientSecure.h>
+
+#include <memory>
+
+#ifdef DEBUG_ESP_HTTP_CLIENT
+#ifdef DEBUG_ESP_PORT
+#define DEBUG_HTTPCLIENT(fmt, ...) DEBUG_ESP_PORT.printf_P( (PGM_P)PSTR(fmt), ## __VA_ARGS__ )
+#endif
+#endif
+
+//#define DEBUG_HTTPCLIENT(fmt, ...) Serial.printf(fmt, ## __VA_ARGS__ )
+#ifndef DEBUG_HTTPCLIENT
+#define DEBUG_HTTPCLIENT(...) do { (void)0; } while (0)
+#endif
+
+
+#define HTTPCLIENT_DEFAULT_TCP_TIMEOUT (5000)
+
+/// HTTP client errors
+#define HTTPC_ERROR_CONNECTION_FAILED   (-1)
+#define HTTPC_ERROR_SEND_HEADER_FAILED  (-2)
+#define HTTPC_ERROR_SEND_PAYLOAD_FAILED (-3)
+#define HTTPC_ERROR_NOT_CONNECTED       (-4)
+#define HTTPC_ERROR_CONNECTION_LOST     (-5)
+#define HTTPC_ERROR_NO_STREAM           (-6)
+#define HTTPC_ERROR_NO_HTTP_SERVER      (-7)
+#define HTTPC_ERROR_TOO_LESS_RAM        (-8)
+#define HTTPC_ERROR_ENCODING            (-9)
+#define HTTPC_ERROR_STREAM_WRITE        (-10)
+#define HTTPC_ERROR_READ_TIMEOUT        (-11)
+
+constexpr int HTTPC_ERROR_CONNECTION_REFUSED __attribute__((deprecated)) = HTTPC_ERROR_CONNECTION_FAILED;
+
+/// size for the stream handling
+#define HTTP_TCP_BUFFER_SIZE (1460)
+
+/// HTTP codes see RFC7231
+typedef enum {
+    HTTP_CODE_CONTINUE = 100,
+    HTTP_CODE_SWITCHING_PROTOCOLS = 101,
+    HTTP_CODE_PROCESSING = 102,
+    HTTP_CODE_OK = 200,
+    HTTP_CODE_CREATED = 201,
+    HTTP_CODE_ACCEPTED = 202,
+    HTTP_CODE_NON_AUTHORITATIVE_INFORMATION = 203,
+    HTTP_CODE_NO_CONTENT = 204,
+    HTTP_CODE_RESET_CONTENT = 205,
+    HTTP_CODE_PARTIAL_CONTENT = 206,
+    HTTP_CODE_MULTI_STATUS = 207,
+    HTTP_CODE_ALREADY_REPORTED = 208,
+    HTTP_CODE_IM_USED = 226,
+    HTTP_CODE_MULTIPLE_CHOICES = 300,
+    HTTP_CODE_MOVED_PERMANENTLY = 301,
+    HTTP_CODE_FOUND = 302,
+    HTTP_CODE_SEE_OTHER = 303,
+    HTTP_CODE_NOT_MODIFIED = 304,
+    HTTP_CODE_USE_PROXY = 305,
+    HTTP_CODE_TEMPORARY_REDIRECT = 307,
+    HTTP_CODE_PERMANENT_REDIRECT = 308,
+    HTTP_CODE_BAD_REQUEST = 400,
+    HTTP_CODE_UNAUTHORIZED = 401,
+    HTTP_CODE_PAYMENT_REQUIRED = 402,
+    HTTP_CODE_FORBIDDEN = 403,
+    HTTP_CODE_NOT_FOUND = 404,
+    HTTP_CODE_METHOD_NOT_ALLOWED = 405,
+    HTTP_CODE_NOT_ACCEPTABLE = 406,
+    HTTP_CODE_PROXY_AUTHENTICATION_REQUIRED = 407,
+    HTTP_CODE_REQUEST_TIMEOUT = 408,
+    HTTP_CODE_CONFLICT = 409,
+    HTTP_CODE_GONE = 410,
+    HTTP_CODE_LENGTH_REQUIRED = 411,
+    HTTP_CODE_PRECONDITION_FAILED = 412,
+    HTTP_CODE_PAYLOAD_TOO_LARGE = 413,
+    HTTP_CODE_URI_TOO_LONG = 414,
+    HTTP_CODE_UNSUPPORTED_MEDIA_TYPE = 415,
+    HTTP_CODE_RANGE_NOT_SATISFIABLE = 416,
+    HTTP_CODE_EXPECTATION_FAILED = 417,
+    HTTP_CODE_MISDIRECTED_REQUEST = 421,
+    HTTP_CODE_UNPROCESSABLE_ENTITY = 422,
+    HTTP_CODE_LOCKED = 423,
+    HTTP_CODE_FAILED_DEPENDENCY = 424,
+    HTTP_CODE_UPGRADE_REQUIRED = 426,
+    HTTP_CODE_PRECONDITION_REQUIRED = 428,
+    HTTP_CODE_TOO_MANY_REQUESTS = 429,
+    HTTP_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE = 431,
+    HTTP_CODE_INTERNAL_SERVER_ERROR = 500,
+    HTTP_CODE_NOT_IMPLEMENTED = 501,
+    HTTP_CODE_BAD_GATEWAY = 502,
+    HTTP_CODE_SERVICE_UNAVAILABLE = 503,
+    HTTP_CODE_GATEWAY_TIMEOUT = 504,
+    HTTP_CODE_HTTP_VERSION_NOT_SUPPORTED = 505,
+    HTTP_CODE_VARIANT_ALSO_NEGOTIATES = 506,
+    HTTP_CODE_INSUFFICIENT_STORAGE = 507,
+    HTTP_CODE_LOOP_DETECTED = 508,
+    HTTP_CODE_NOT_EXTENDED = 510,
+    HTTP_CODE_NETWORK_AUTHENTICATION_REQUIRED = 511
+} t_http_codes;
+
+typedef enum {
+    HTTPC_TE_IDENTITY,
+    HTTPC_TE_CHUNKED
+} transferEncoding_t;
+
+/**
+    redirection follow mode.
+    + `HTTPC_DISABLE_FOLLOW_REDIRECTS` - no redirection will be followed.
+    + `HTTPC_STRICT_FOLLOW_REDIRECTS` - strict RFC2616, only requests using
+        GET or HEAD methods will be redirected (using the same method),
+        since the RFC requires end-user confirmation in other cases.
+    + `HTTPC_FORCE_FOLLOW_REDIRECTS` - all redirections will be followed,
+        regardless of a used method. New request will use the same method,
+        and they will include the same body data and the same headers.
+        In the sense of the RFC, it's just like every redirection is confirmed.
+*/
+typedef enum {
+    HTTPC_DISABLE_FOLLOW_REDIRECTS,
+    HTTPC_STRICT_FOLLOW_REDIRECTS,
+    HTTPC_FORCE_FOLLOW_REDIRECTS
+} followRedirects_t;
+
+class TransportTraits;
+typedef std::unique_ptr<TransportTraits> TransportTraitsPtr;
+
+class HTTPClient {
+public:
+    HTTPClient() = default;
+    ~HTTPClient() = default;
+    HTTPClient(HTTPClient&&) = default;
+    HTTPClient& operator=(HTTPClient&&) = default;
+
+    // The easier way
+    bool begin(String url);
+    bool begin(String host, uint16_t port, String uri = "/", bool https = false);
+    bool begin(String url, const uint8_t httpsFingerprint[20]) {
+        setFingerprint(httpsFingerprint);
+        return begin(url);
+    }
+    bool begin(String host, uint16_t port, String uri, const uint8_t httpsFingerprint[20]) {
+        setFingerprint(httpsFingerprint);
+        return begin(host, port, uri);
+    }
+
+    // Let's do it the hard way, too
+    bool begin(WiFiClient &client, const String& url);
+    bool begin(WiFiClient &client, const String& host, uint16_t port, const String& uri = "/", bool https = false);
+
+
+    void end(void);
+
+    bool connected(void);
+
+    void setReuse(bool reuse); /// keep-alive
+    void setUserAgent(const String& userAgent);
+    void setAuthorization(const char * user, const char * password);
+    void setAuthorization(const char * auth);
+    void setAuthorization(String auth);
+    void setTimeout(uint16_t timeout);
+
+    // Redirections
+    void setFollowRedirects(followRedirects_t follow);
+    void setRedirectLimit(uint16_t limit); // max redirects to follow for a single request
+
+    bool setURL(const String& url); // handy for handling redirects
+    void useHTTP10(bool usehttp10 = true);
+
+    /// request handling
+    int GET();
+    int DELETE();
+    int POST(const uint8_t* payload, size_t size);
+    int POST(const String& payload);
+    int PUT(const uint8_t* payload, size_t size);
+    int PUT(const String& payload);
+    int PATCH(const uint8_t* payload, size_t size);
+    int PATCH(const String& payload);
+    int sendRequest(const char* type, const String& payload);
+    int sendRequest(const char* type, const uint8_t* payload = NULL, size_t size = 0);
+    int sendRequest(const char* type, Stream * stream, size_t size = 0);
+
+    void addHeader(const String& name, const String& value, bool first = false, bool replace = true);
+
+    /// Response handling
+    void collectHeaders(const char* headerKeys[], const size_t headerKeysCount);
+    String header(const char* name);   // get request header value by name
+    String header(size_t i);              // get request header value by number
+    String headerName(size_t i);          // get request header name by number
+    int headers();                     // get header count
+    bool hasHeader(const char* name);  // check if header exists
+
+
+    int getSize(void);
+    const String& getLocation(void); // Location header from redirect if 3XX
+
+    WiFiClient& getStream(void);
+    WiFiClient* getStreamPtr(void);
+    int writeToPrint(Print* print);
+    int writeToStream(Stream* stream);
+    const String& getString(void);
+    static String errorToString(int error);
+
+    // ----------------------------------------------------------------------------------------------
+    // HTTPS support, mirrors the WiFiClientSecure interface
+    // Could possibly use a virtual interface class between the two, but for now it is more
+    // straightforward to simply feed calls through manually here.
+    void setSession(Session *session) {
+        _tls()->setSession(session);
+    }
+    void setInsecure() {
+        _tls()->setInsecure();
+    }
+    void setKnownKey(const PublicKey *pk, unsigned usages = BR_KEYTYPE_KEYX | BR_KEYTYPE_SIGN) {
+        _tls()->setKnownKey(pk, usages);
+    }
+    bool setFingerprint(const uint8_t fingerprint[20]) {
+        return _tls()->setFingerprint(fingerprint);
+    }
+    bool setFingerprint(const char *fpStr) {
+        return _tls()->setFingerprint(fpStr);
+    }
+    void allowSelfSignedCerts() {
+        _tls()->allowSelfSignedCerts();
+    }
+    void setTrustAnchors(const X509List *ta) {
+        _tls()->setTrustAnchors(ta);
+    }
+    void setX509Time(time_t now) {
+        _tls()->setX509Time(now);
+    }
+    void setClientRSACert(const X509List *cert, const PrivateKey *sk) {
+        _tls()->setClientRSACert(cert, sk);
+    }
+    void setClientECCert(const X509List *cert, const PrivateKey *sk, unsigned allowed_usages, unsigned cert_issuer_key_type) {
+        _tls()->setClientECCert(cert, sk, allowed_usages, cert_issuer_key_type);
+    }
+    void setBufferSizes(int recv, int xmit) {
+        _tls()->setBufferSizes(recv, xmit);
+    }
+    void setCertStore(CertStoreBase *certStore) {
+        _tls()->setCertStore(certStore);
+    }
+    bool setCiphers(const uint16_t *cipherAry, int cipherCount) {
+        return _tls()->setCiphers(cipherAry, cipherCount);
+    }
+    bool setCiphers(const std::vector<uint16_t>& list) {
+        return _tls()->setCiphers(list);
+    }
+    bool setCiphersLessSecure() {
+        return _tls()->setCiphersLessSecure();
+    }
+    bool setSSLVersion(uint32_t min = BR_TLS10, uint32_t max = BR_TLS12) {
+        return _tls()->setSSLVersion(min, max);
+    }
+    void setCACert(const char *rootCA) {
+        _tls()->setCACert(rootCA);
+    }
+    void setCertificate(const char *client_ca) {
+        _tls()->setCertificate(client_ca);
+    }
+    void setPrivateKey(const char *private_key) {
+        _tls()->setPrivateKey(private_key);
+    }
+    bool loadCACert(Stream& stream, size_t size) {
+        return _tls()->loadCACert(stream, size);
+    }
+    bool loadCertificate(Stream& stream, size_t size) {
+        return _tls()->loadCertificate(stream, size);
+    }
+    bool loadPrivateKey(Stream& stream, size_t size) {
+        return _tls()->loadPrivateKey(stream, size);
+    }
+
+
+
+protected:
+    // HTTPS helpers
+    WiFiClientSecure *_tls() {
+        if (!_clientMade) {
+            _clientMade = new WiFiClientSecure();
+            _clientGiven = false;
+        }
+        _clientTLS = true;
+        return (WiFiClientSecure*)_clientMade;
+    }
+
+    struct RequestArgument {
+        String key;
+        String value;
+    };
+
+    bool beginInternal(const String& url, const char* expectedProtocol);
+    void disconnect(bool preserveClient = false);
+    void clear();
+    int returnError(int error);
+    bool connect(void);
+    bool sendHeader(const char * type);
+    int handleHeaderResponse();
+    int writeToStreamDataBlock(Stream * stream, int len);
+
+    WiFiClient *_clientMade = nullptr;
+    bool _clientTLS = false;
+
+    std::unique_ptr<WiFiClient> _clientIn;
+    bool _clientGiven = false;
+
+    WiFiClient *_client() {
+        if (_clientGiven) {
+            return _clientIn.get();
+        } else {
+            return _clientMade;
+        }
+    }
+
+    /// request handling
+    String _host;
+    uint16_t _port = 0;
+    bool _reuse = true;
+    uint16_t _tcpTimeout = HTTPCLIENT_DEFAULT_TCP_TIMEOUT;
+    bool _useHTTP10 = false;
+
+    String _uri;
+    String _protocol;
+    String _headers;
+    String _base64Authorization;
+
+    static const String defaultUserAgent;
+    String _userAgent = defaultUserAgent;
+
+    /// Response handling
+    std::unique_ptr<RequestArgument[]> _currentHeaders;
+    size_t _headerKeysCount = 0;
+
+    int _returnCode = 0;
+    int _size = -1;
+    bool _canReuse = false;
+    followRedirects_t _followRedirects = HTTPC_DISABLE_FOLLOW_REDIRECTS;
+    uint16_t _redirectLimit = 10;
+    String _location;
+    transferEncoding_t _transferEncoding = HTTPC_TE_IDENTITY;
+    std::unique_ptr<StreamString> _payload;
+
+
+};

libraries/HTTPClient/src/base64.cpp

@@ -0,0 +1,69 @@
+/**
+    base64.cpp
+
+    Created on: 09.12.2015
+
+    Copyright (c) 2015 Markus Sattler. All rights reserved.
+    This file is part of the ESP8266 core for Arduino.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#include "Arduino.h"
+extern "C" {
+#include "libb64/cencode.h"
+}
+#include "base64.h"
+
+/**
+    convert input data to base64
+    @param data const uint8_t
+    @param length size_t
+    @return String
+*/
+String base64::encode(const uint8_t * data, size_t length, bool doNewLines) {
+    String base64;
+
+    // base64 needs more size then the source data, use cencode.h macros
+    size_t size = ((doNewLines ? base64_encode_expected_len(length)
+                    : base64_encode_expected_len_nonewlines(length)) + 1);
+
+    if (base64.reserve(size)) {
+
+        base64_encodestate _state;
+        if (doNewLines) {
+            base64_init_encodestate(&_state);
+        } else {
+            base64_init_encodestate_nonewlines(&_state);
+        }
+
+        constexpr size_t BUFSIZE = 48;
+        char buf[BUFSIZE + 1 /* newline */ + 1 /* NUL */];
+        for (size_t len = 0; len < length; len += BUFSIZE * 3 / 4) {
+            size_t blocklen = base64_encode_block((const char*) data + len,
+                                                  std::min(BUFSIZE * 3 / 4, length - len), buf, &_state);
+            buf[blocklen] = '\0';
+            base64 += buf;
+        }
+        if (base64_encode_blockend(buf, &_state)) {
+            base64 += buf;
+        }
+    } else {
+        base64 = F("-FAIL-");
+    }
+
+    return base64;
+}

libraries/HTTPClient/src/base64.h

@@ -0,0 +1,48 @@
+/**
+    base64.h
+
+    Created on: 09.12.2015
+
+    Copyright (c) 2015 Markus Sattler. All rights reserved.
+    This file is part of the ESP8266 core for Arduino.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#pragma once
+
+#include <api/String.h>
+
+class base64 {
+public:
+    // NOTE: The default behaviour of backend (lib64)
+    // is to add a newline every 72 (encoded) characters output.
+    // This may 'break' longer uris and json variables
+    static String encode(const uint8_t * data, size_t length, bool doNewLines);
+    static inline String encode(const String& text, bool doNewLines) {
+        return encode((const uint8_t *) text.c_str(), text.length(), doNewLines);
+    }
+
+    // esp32 compat:
+
+    static inline String encode(const uint8_t * data, size_t length) {
+        return encode(data, length, false);
+    }
+
+    static inline String encode(const String& text) {
+        return encode(text, false);
+    }
+};

libraries/HTTPClient/src/libb64/AUTHORS

@@ -0,0 +1,7 @@
+libb64: Base64 Encoding/Decoding Routines
+======================================
+
+Authors:
+-------
+
+Chris Venter	chris.venter@gmail.com	http://rocketpod.blogspot.com

libraries/HTTPClient/src/libb64/LICENSE

@@ -0,0 +1,29 @@
+Copyright-Only Dedication (based on United States law) 
+or Public Domain Certification
+
+The person or persons who have associated work with this document (the
+"Dedicator" or "Certifier") hereby either (a) certifies that, to the best of
+his knowledge, the work of authorship identified is in the public domain of the
+country from which the work is published, or (b) hereby dedicates whatever
+copyright the dedicators holds in the work of authorship identified below (the
+"Work") to the public domain. A certifier, moreover, dedicates any copyright
+interest he may have in the associated work, and for these purposes, is
+described as a "dedicator" below.
+
+A certifier has taken reasonable steps to verify the copyright status of this
+work. Certifier recognizes that his good faith efforts may not shield him from
+liability if in fact the work certified is not in the public domain.
+
+Dedicator makes this dedication for the benefit of the public at large and to
+the detriment of the Dedicator's heirs and successors. Dedicator intends this
+dedication to be an overt act of relinquishment in perpetuity of all present
+and future rights under copyright law, whether vested or contingent, in the
+Work. Dedicator understands that such relinquishment of all rights includes
+the relinquishment of all rights to enforce (by lawsuit or otherwise) those
+copyrights in the Work.
+
+Dedicator recognizes that, once placed in the public domain, the Work may be
+freely reproduced, distributed, transmitted, used, modified, built upon, or
+otherwise exploited by anyone for any purpose, commercial or non-commercial,
+and in any way, including by methods that have not yet been invented or
+conceived.

libraries/HTTPClient/src/libb64/cdecode.cpp

@@ -0,0 +1,111 @@
+/*
+    cdecoder.c - c source to a base64 decoding algorithm implementation
+
+    This is part of the libb64 project, and has been placed in the public domain.
+    For details, see http://sourceforge.net/projects/libb64
+*/
+
+#include <pgmspace.h>
+#include <stdint.h>
+#include "cdecode.h"
+
+extern "C" {
+
+    static int base64_decode_value_signed(int8_t value_in) {
+        static const int8_t decoding[] PROGMEM  = {62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -2, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51};
+        static const int8_t decoding_size = sizeof(decoding);
+        value_in -= 43;
+        if (value_in < 0 || value_in > decoding_size) {
+            return -1;
+        }
+        return pgm_read_byte(&decoding[(int)value_in]);
+    }
+
+    void base64_init_decodestate(base64_decodestate* state_in) {
+        state_in->step = step_a;
+        state_in->plainchar = 0;
+    }
+
+    static int base64_decode_block_signed(const int8_t* code_in, const int length_in, int8_t* plaintext_out, base64_decodestate* state_in) {
+        const int8_t* codechar = code_in;
+        int8_t* plainchar = plaintext_out;
+        int8_t fragment;
+
+        *plainchar = state_in->plainchar;
+
+        switch (state_in->step) {
+            while (1) {
+            case step_a:
+                do {
+                    if (codechar == code_in + length_in) {
+                        state_in->step = step_a;
+                        state_in->plainchar = *plainchar;
+                        return plainchar - plaintext_out;
+                    }
+                    fragment = (int8_t)base64_decode_value_signed(*codechar++);
+                } while (fragment < 0);
+                *plainchar    = (fragment & 0x03f) << 2;
+            // falls through
+            case step_b:
+                do {
+                    if (codechar == code_in + length_in) {
+                        state_in->step = step_b;
+                        state_in->plainchar = *plainchar;
+                        return plainchar - plaintext_out;
+                    }
+                    fragment = (int8_t)base64_decode_value_signed(*codechar++);
+                } while (fragment < 0);
+                *plainchar++ |= (fragment & 0x030) >> 4;
+                *plainchar    = (fragment & 0x00f) << 4;
+            // falls through
+            case step_c:
+                do {
+                    if (codechar == code_in + length_in) {
+                        state_in->step = step_c;
+                        state_in->plainchar = *plainchar;
+                        return plainchar - plaintext_out;
+                    }
+                    fragment = (int8_t)base64_decode_value_signed(*codechar++);
+                } while (fragment < 0);
+                *plainchar++ |= (fragment & 0x03c) >> 2;
+                *plainchar    = (fragment & 0x003) << 6;
+            // falls through
+            case step_d:
+                do {
+                    if (codechar == code_in + length_in) {
+                        state_in->step = step_d;
+                        state_in->plainchar = *plainchar;
+                        return plainchar - plaintext_out;
+                    }
+                    fragment = (int8_t)base64_decode_value_signed(*codechar++);
+                } while (fragment < 0);
+                *plainchar++   |= (fragment & 0x03f);
+            }
+        }
+        /* control should not reach here */
+        return plainchar - plaintext_out;
+    }
+
+    static int base64_decode_chars_signed(const int8_t* code_in, const int length_in, int8_t* plaintext_out) {
+        base64_decodestate _state;
+        base64_init_decodestate(&_state);
+        int len = base64_decode_block_signed(code_in, length_in, plaintext_out, &_state);
+        if (len > 0) {
+            plaintext_out[len] = 0;
+        }
+        return len;
+    }
+
+    int base64_decode_value(char value_in) {
+        return base64_decode_value_signed(*((int8_t *) &value_in));
+    }
+
+    int base64_decode_block(const char* code_in, const int length_in, char* plaintext_out, base64_decodestate* state_in) {
+        return base64_decode_block_signed((int8_t *) code_in, length_in, (int8_t *) plaintext_out, state_in);
+    }
+
+    int base64_decode_chars(const char* code_in, const int length_in, char* plaintext_out) {
+        return base64_decode_chars_signed((int8_t *) code_in, length_in, (int8_t *) plaintext_out);
+    }
+
+};

libraries/HTTPClient/src/libb64/cdecode.h

@@ -0,0 +1,38 @@
+/*
+    cdecode.h - c header for a base64 decoding algorithm
+
+    This is part of the libb64 project, and has been placed in the public domain.
+    For details, see http://sourceforge.net/projects/libb64
+*/
+
+#ifndef BASE64_CDECODE_H
+#define BASE64_CDECODE_H
+
+#define base64_decode_expected_len(n) ((n * 3) / 4)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    step_a, step_b, step_c, step_d
+} base64_decodestep;
+
+typedef struct {
+    base64_decodestep step;
+    char plainchar;
+} base64_decodestate;
+
+void base64_init_decodestate(base64_decodestate* state_in);
+
+int base64_decode_value(char value_in);
+
+int base64_decode_block(const char* code_in, const int length_in, char* plaintext_out, base64_decodestate* state_in);
+
+int base64_decode_chars(const char* code_in, const int length_in, char* plaintext_out);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* BASE64_CDECODE_H */

libraries/HTTPClient/src/libb64/cencode.cpp

@@ -0,0 +1,126 @@
+/*
+    cencoder.c - c source to a base64 encoding algorithm implementation
+
+    This is part of the libb64 project, and has been placed in the public domain.
+    For details, see http://sourceforge.net/projects/libb64
+*/
+
+#include "cencode.h"
+
+extern "C" {
+
+    void base64_init_encodestate(base64_encodestate* state_in) {
+        state_in->step = step_A;
+        state_in->result = 0;
+        state_in->stepcount = 0;
+        state_in->stepsnewline = BASE64_CHARS_PER_LINE;
+    }
+
+
+    void base64_init_encodestate_nonewlines(base64_encodestate* state_in) {
+        base64_init_encodestate(state_in);
+        state_in->stepsnewline = -1;
+    }
+
+    char base64_encode_value(const char n) {
+        char r;
+
+        if (n < 26) {
+            r = n + 'A';
+        } else if (n < 26 + 26) {
+            r = n - 26 + 'a';
+        } else if (n < 26 + 26 + 10) {
+            r = n - 26 - 26 + '0';
+        } else if (n == 62) {
+            r = '+';
+        } else {
+            r = '/';
+        }
+        return r;
+    }
+
+    int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in) {
+        const char* plainchar = plaintext_in;
+        const char* const plaintextend = plaintext_in + length_in;
+        char* codechar = code_out;
+        char result;
+        char fragment;
+
+        result = state_in->result;
+
+        switch (state_in->step) {
+            while (1) {
+            case step_A:
+                if (plainchar == plaintextend) {
+                    state_in->result = result;
+                    state_in->step = step_A;
+                    return codechar - code_out;
+                }
+                fragment = *plainchar++;
+                result = (fragment & 0x0fc) >> 2;
+                *codechar++ = base64_encode_value(result);
+                result = (fragment & 0x003) << 4;
+            // falls through
+            case step_B:
+                if (plainchar == plaintextend) {
+                    state_in->result = result;
+                    state_in->step = step_B;
+                    return codechar - code_out;
+                }
+                fragment = *plainchar++;
+                result |= (fragment & 0x0f0) >> 4;
+                *codechar++ = base64_encode_value(result);
+                result = (fragment & 0x00f) << 2;
+            // falls through
+            case step_C:
+                if (plainchar == plaintextend) {
+                    state_in->result = result;
+                    state_in->step = step_C;
+                    return codechar - code_out;
+                }
+                fragment = *plainchar++;
+                result |= (fragment & 0x0c0) >> 6;
+                *codechar++ = base64_encode_value(result);
+                result  = (fragment & 0x03f) >> 0;
+                *codechar++ = base64_encode_value(result);
+
+                ++(state_in->stepcount);
+                if ((state_in->stepcount == BASE64_CHARS_PER_LINE / 4) && (state_in->stepsnewline > 0)) {
+                    *codechar++ = '\n';
+                    state_in->stepcount = 0;
+                }
+            }
+        }
+        /* control should not reach here */
+        return codechar - code_out;
+    }
+
+    int base64_encode_blockend(char* code_out, base64_encodestate* state_in) {
+        char* codechar = code_out;
+
+        switch (state_in->step) {
+        case step_B:
+            *codechar++ = base64_encode_value(state_in->result);
+            *codechar++ = '=';
+            *codechar++ = '=';
+            break;
+        case step_C:
+            *codechar++ = base64_encode_value(state_in->result);
+            *codechar++ = '=';
+            break;
+        case step_A:
+            break;
+        }
+        *codechar = 0x00;
+
+        return codechar - code_out;
+    }
+
+    int base64_encode_chars(const char* plaintext_in, int length_in, char* code_out) {
+        base64_encodestate _state;
+        base64_init_encodestate(&_state);
+        int len = base64_encode_block(plaintext_in, length_in, code_out, &_state);
+        return len + base64_encode_blockend((code_out + len), &_state);
+    }
+
+};

libraries/HTTPClient/src/libb64/cencode.h

@@ -0,0 +1,48 @@
+/*
+    cencode.h - c header for a base64 encoding algorithm
+
+    This is part of the libb64 project, and has been placed in the public domain.
+    For details, see http://sourceforge.net/projects/libb64
+*/
+
+#ifndef BASE64_CENCODE_H
+#define BASE64_CENCODE_H
+
+#define BASE64_CHARS_PER_LINE 72
+
+#define base64_encode_expected_len_nonewlines(n) ((((4 * (n)) / 3) + 3) & ~3)
+#define base64_encode_expected_len(n) \
+       (base64_encode_expected_len_nonewlines(n) + ((n / ((BASE64_CHARS_PER_LINE * 3) / 4)) + 1))
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    step_A, step_B, step_C
+} base64_encodestep;
+
+typedef struct {
+    base64_encodestep step;
+    char result;
+    int stepcount;
+    int stepsnewline;
+} base64_encodestate;
+
+void base64_init_encodestate(base64_encodestate* state_in);
+void base64_init_encodestate_nonewlines(base64_encodestate* state_in);
+
+char base64_encode_value(char value_in);
+
+int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in);
+
+int base64_encode_blockend(char* code_out, base64_encodestate* state_in);
+
+int base64_encode_chars(const char* plaintext_in, int length_in, char* code_out);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* BASE64_CENCODE_H */

libraries/HTTPUpdate/examples/httpUpdate/httpUpdate.ino

@@ -0,0 +1,83 @@
+/**
+   httpUpdate.ino
+
+    Created on: 27.11.2015
+
+*/
+
+#include <Arduino.h>
+
+#include <WiFi.h>
+#include <HTTPClient.h>
+#include <HTTPUpdate.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+#define UPDATE_URL "http://192.168.1.8/xfer/file.bin"
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void update_started() {
+  Serial.println("CALLBACK:  HTTP update process started");
+}
+
+void update_finished() {
+  Serial.println("CALLBACK:  HTTP update process finished");
+}
+
+void update_progress(int cur, int total) {
+  Serial.printf("CALLBACK:  HTTP update process at %d of %d bytes...\n", cur, total);
+}
+
+void update_error(int err) {
+  Serial.printf("CALLBACK:  HTTP update fatal error code %d\n", err);
+}
+
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    // Add optional callback notifiers
+    httpUpdate.onStart(update_started);
+    httpUpdate.onEnd(update_finished);
+    httpUpdate.onProgress(update_progress);
+    httpUpdate.onError(update_error);
+
+    t_httpUpdate_return ret = httpUpdate.update(UPDATE_URL);
+    // Or:
+    // t_httpUpdate_return ret = httpUpdate.update("server", 80, "file.bin");
+
+    switch (ret) {
+      case HTTP_UPDATE_FAILED: Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s\n", httpUpdate.getLastError(), httpUpdate.getLastErrorString().c_str()); break;
+
+      case HTTP_UPDATE_NO_UPDATES: Serial.println("HTTP_UPDATE_NO_UPDATES"); break;
+
+      case HTTP_UPDATE_OK: Serial.println("HTTP_UPDATE_OK"); break;
+    }
+  }
+}

libraries/HTTPUpdate/examples/httpUpdateSecure/httpUpdateSecure.ino

@@ -0,0 +1,85 @@
+/**
+   httpUpdateSecure.ino
+
+    Created on: 27.11.2015
+
+*/
+
+#include <Arduino.h>
+
+#include <WiFi.h>
+#include <HTTPClient.h>
+#include <HTTPUpdate.h>
+
+#ifndef STASSID
+#define STASSID "your-ssid"
+#define STAPSK "your-password"
+#endif
+
+const char *ssid = STASSID;
+const char *pass = STAPSK;
+
+#define UPDATE_URL "https://www.ziplabel.com/file.bin"
+
+WiFiMulti WiFiMulti;
+
+void setup() {
+
+  Serial.begin(115200);
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.printf("[SETUP] WAIT %d...\n", t);
+    Serial.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP(ssid, pass);
+}
+
+void update_started() {
+  Serial.println("CALLBACK:  HTTP update process started");
+}
+
+void update_finished() {
+  Serial.println("CALLBACK:  HTTP update process finished");
+}
+
+void update_progress(int cur, int total) {
+  Serial.printf("CALLBACK:  HTTP update process at %d of %d bytes...\n", cur, total);
+}
+
+void update_error(int err) {
+  Serial.printf("CALLBACK:  HTTP update fatal error code %d\n", err);
+}
+
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    // Add optional callback notifiers
+    httpUpdate.onStart(update_started);
+    httpUpdate.onEnd(update_finished);
+    httpUpdate.onProgress(update_progress);
+    httpUpdate.onError(update_error);
+
+    WiFiClientSecure client;
+    client.setInsecure();
+    t_httpUpdate_return ret = httpUpdate.update(client, UPDATE_URL);
+    // Or:
+    // t_httpUpdate_return ret = httpUpdate.update("server", 80, "file.bin");
+
+    switch (ret) {
+      case HTTP_UPDATE_FAILED: Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s\n", httpUpdate.getLastError(), httpUpdate.getLastErrorString().c_str()); break;
+
+      case HTTP_UPDATE_NO_UPDATES: Serial.println("HTTP_UPDATE_NO_UPDATES"); break;
+
+      case HTTP_UPDATE_OK: Serial.println("HTTP_UPDATE_OK"); break;
+    }
+  }
+}

libraries/HTTPUpdate/keywords.txt

@@ -0,0 +1,44 @@
+#######################################
+# Syntax Coloring Map For ESP8266httpUpdate
+#######################################
+
+#######################################
+# Library (KEYWORD3)
+#######################################
+
+HTTPUpdate	KEYWORD3		RESERVED_WORD
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+HTTPUpdateResult	KEYWORD1		DATA_TYPE
+ESPhttpUpdate	KEYWORD1		DATA_TYPE
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+rebootOnUpdate	KEYWORD2
+update	KEYWORD2
+updateSpiffs	KEYWORD2
+getLastError	KEYWORD2
+getLastErrorString	KEYWORD2
+setAuthorization	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+HTTP_UE_TOO_LESS_SPACE	LITERAL1		RESERVED_WORD_2
+HTTP_UE_SERVER_NOT_REPORT_SIZE	LITERAL1		RESERVED_WORD_2
+HTTP_UE_SERVER_FILE_NOT_FOUND	LITERAL1		RESERVED_WORD_2
+HTTP_UE_SERVER_FORBIDDEN	LITERAL1		RESERVED_WORD_2
+HTTP_UE_SERVER_WRONG_HTTP_CODE	LITERAL1		RESERVED_WORD_2
+HTTP_UE_SERVER_FAULTY_MD5	LITERAL1		RESERVED_WORD_2
+HTTP_UE_BIN_VERIFY_HEADER_FAILED	LITERAL1		RESERVED_WORD_2
+HTTP_UE_BIN_FOR_WRONG_FLASH	LITERAL1		RESERVED_WORD_2
+HTTP_UE_SERVER_UNAUTHORIZED	LITERAL1		RESERVED_WORD_2
+HTTP_UPDATE_FAILED	LITERAL1		RESERVED_WORD_2
+HTTP_UPDATE_NO_UPDATES	LITERAL1		RESERVED_WORD_2
+HTTP_UPDATE_OK	LITERAL1		RESERVED_WORD_2

libraries/HTTPUpdate/library.properties

@@ -0,0 +1,10 @@
+name=HTTPUpdate
+version=1.3
+author=Markus Sattler
+maintainer=Earle F. Philhower, III <earlephilhower@yahoo.com>
+sentence=Http Update for ESP8266, ported to Pico
+paragraph=
+category=Data Processing
+url=https://github.com/earlephilhower/arduino-pico
+architectures=rp2040
+dot_a_linkage=true

libraries/HTTPUpdate/src/HTTPUpdate.cpp

@@ -0,0 +1,392 @@
+/**
+
+    @file HTTPUpdate.cpp
+    @date 21.06.2015
+    @author Markus Sattler
+
+    Copyright (c) 2015 Markus Sattler. All rights reserved.
+    This file is part of the  Http Updater.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#include "HTTPUpdate.h"
+#include <StreamString.h>
+
+extern uint8_t _FS_start;
+extern uint8_t _FS_end;
+
+HTTPUpdate::HTTPUpdate(void)
+    : _httpClientTimeout(8000) {
+}
+
+HTTPUpdate::HTTPUpdate(int httpClientTimeout)
+    : _httpClientTimeout(httpClientTimeout) {
+}
+
+HTTPUpdate::~HTTPUpdate(void) {
+}
+
+/**
+    set the Authorization for the http request
+    @param user const String&
+    @param password const String&
+*/
+void HTTPUpdate::setAuthorization(const String &user, const String &password) {
+    _user = user;
+    _password = password;
+}
+
+/**
+    set the Authorization for the http request
+    @param auth const String& base64
+*/
+void HTTPUpdate::setAuthorization(const String &auth) {
+    _auth = auth;
+}
+
+HTTPUpdateResult HTTPUpdate::update(WiFiClient& client, const String& url, const String& currentVersion) {
+    HTTPClient http;
+    http.begin(client, url);
+    return handleUpdate(http, currentVersion, false);
+}
+
+HTTPUpdateResult HTTPUpdate::updateFS(WiFiClient& client, const String& url, const String& currentVersion) {
+    HTTPClient http;
+    http.begin(client, url);
+    return handleUpdate(http, currentVersion, true);
+}
+
+HTTPUpdateResult HTTPUpdate::update(WiFiClient& client, const String& host, uint16_t port, const String& uri,
+                                    const String& currentVersion) {
+    HTTPClient http;
+    http.begin(client, host, port, uri);
+    return handleUpdate(http, currentVersion, false);
+}
+
+HTTPUpdateResult HTTPUpdate::update(const String& url, const String& currentVersion) {
+    HTTPClient http;
+    http.begin(url);
+    return handleUpdate(http, currentVersion, false);
+}
+
+HTTPUpdateResult HTTPUpdate::update(const String& host, uint16_t port, const String& uri, const String& currentVersion) {
+    HTTPClient http;
+    http.begin(host, port, uri);
+    return handleUpdate(http, currentVersion, false);
+}
+
+HTTPUpdateResult HTTPUpdate::updateFS(const String& url, const String& currentVersion) {
+    HTTPClient http;
+    http.begin(url);
+    return handleUpdate(http, currentVersion, true);
+}
+
+/**
+    return error code as int
+    @return int error code
+*/
+int HTTPUpdate::getLastError(void) {
+    return _lastError;
+}
+
+/**
+    return error code as String
+    @return String error
+*/
+String HTTPUpdate::getLastErrorString(void) {
+
+    if (_lastError == 0) {
+        return String(); // no error
+    }
+
+    // error from Update class
+    if (_lastError > 0) {
+        StreamString error;
+        Update.printError(error);
+        error.trim(); // remove line ending
+        return String(F("Update error: ")) + error;
+    }
+
+    // error from http client
+    if (_lastError > -100) {
+        return String(F("HTTP error: ")) + HTTPClient::errorToString(_lastError);
+    }
+
+    switch (_lastError) {
+    case HTTP_UE_TOO_LESS_SPACE:
+        return F("Not Enough space");
+    case HTTP_UE_SERVER_NOT_REPORT_SIZE:
+        return F("Server Did Not Report Size");
+    case HTTP_UE_SERVER_FILE_NOT_FOUND:
+        return F("File Not Found (404)");
+    case HTTP_UE_SERVER_FORBIDDEN:
+        return F("Forbidden (403)");
+    case HTTP_UE_SERVER_WRONG_HTTP_CODE:
+        return F("Wrong HTTP Code");
+    case HTTP_UE_SERVER_FAULTY_MD5:
+        return F("Wrong MD5");
+    case HTTP_UE_BIN_VERIFY_HEADER_FAILED:
+        return F("Verify Bin Header Failed");
+    case HTTP_UE_BIN_FOR_WRONG_FLASH:
+        return F("New Binary Does Not Fit Flash Size");
+    case HTTP_UE_SERVER_UNAUTHORIZED:
+        return F("Unauthorized (401)");
+    }
+
+    return String();
+}
+
+
+/**
+
+    @param http HTTPClient
+    @param currentVersion const char
+    @return HTTPUpdateResult
+*/
+HTTPUpdateResult HTTPUpdate::handleUpdate(HTTPClient& http, const String& currentVersion, bool spiffs) {
+
+    HTTPUpdateResult ret = HTTP_UPDATE_FAILED;
+
+    // use HTTP/1.0 for update since the update handler not support any transfer Encoding
+    http.useHTTP10(true);
+    http.setTimeout(_httpClientTimeout);
+    http.setFollowRedirects(_followRedirects);
+    http.setUserAgent(F("-http-Update"));
+    http.addHeader(F("x--Chip-ID"), String(rp2040.getChipID()));
+    http.addHeader(F("x--STA-MAC"), WiFi.macAddress());
+    http.addHeader(F("x--AP-MAC"), WiFi.softAPmacAddress());
+
+    if (spiffs) {
+        http.addHeader(F("x--mode"), F("spiffs"));
+    } else {
+        http.addHeader(F("x--mode"), F("sketch"));
+    }
+
+    if (currentVersion && currentVersion[0] != 0x00) {
+        http.addHeader(F("x--version"), currentVersion);
+    }
+
+    if (_user != "" && _password != "") {
+        http.setAuthorization(_user.c_str(), _password.c_str());
+    }
+
+    if (_auth != "") {
+        http.setAuthorization(_auth.c_str());
+    }
+
+    const char * headerkeys[] = { "x-MD5" };
+    size_t headerkeyssize = sizeof(headerkeys) / sizeof(char*);
+
+    // track these headers
+    http.collectHeaders(headerkeys, headerkeyssize);
+
+
+    int code = http.GET();
+    int len = http.getSize();
+
+    if (code <= 0) {
+        DEBUG_HTTP_UPDATE("[httpUpdate] HTTP error: %s\n", http.errorToString(code).c_str());
+        _setLastError(code);
+        http.end();
+        return HTTP_UPDATE_FAILED;
+    }
+
+
+    DEBUG_HTTP_UPDATE("[httpUpdate] Header read fin.\n");
+    DEBUG_HTTP_UPDATE("[httpUpdate] Server header:\n");
+    DEBUG_HTTP_UPDATE("[httpUpdate]  - code: %d\n", code);
+    DEBUG_HTTP_UPDATE("[httpUpdate]  - len: %d\n", len);
+
+    String md5;
+    if (_md5Sum.length()) {
+        md5 = _md5Sum;
+    } else if (http.hasHeader("x-MD5")) {
+        md5 = http.header("x-MD5");
+    }
+    if (md5.length()) {
+        DEBUG_HTTP_UPDATE("[httpUpdate]  - MD5: %s\n", md5.c_str());
+    }
+
+    DEBUG_HTTP_UPDATE("[httpUpdate]  info:\n");
+
+    if (currentVersion && currentVersion[0] != 0x00) {
+        DEBUG_HTTP_UPDATE("[httpUpdate]  - current version: %s\n", currentVersion.c_str());
+    }
+
+    switch (code) {
+    case HTTP_CODE_OK:  ///< OK (Start Update)
+        if (len > 0) {
+            bool startUpdate = true;
+            if (spiffs) {
+                size_t spiffsSize = ((size_t)&_FS_end - (size_t)&_FS_start);
+                if (len > (int) spiffsSize) {
+                    DEBUG_HTTP_UPDATE("[httpUpdate] spiffsSize to low (%d) needed: %d\n", spiffsSize, len);
+                    startUpdate = false;
+                }
+            }
+
+            if (!startUpdate) {
+                _setLastError(HTTP_UE_TOO_LESS_SPACE);
+                ret = HTTP_UPDATE_FAILED;
+            } else {
+                // Warn main app we're starting up...
+                if (_cbStart) {
+                    _cbStart();
+                }
+
+                WiFiClient * tcp = http.getStreamPtr();
+                if (!tcp) {
+                    DEBUG_HTTP_UPDATE("[httpUpdate] WiFiClient connection unexpectedly absent\n");
+                    _setLastError(HTTPC_ERROR_CONNECTION_LOST);
+                    http.end();
+                    return HTTP_UPDATE_FAILED;
+                }
+
+                if (_closeConnectionsOnUpdate) {
+                    WiFiUDP::stopAll();
+                    WiFiClient::stopAllExcept(tcp);
+                }
+
+                delay(100);
+
+                int command;
+
+                if (spiffs) {
+                    command = U_FS;
+                    DEBUG_HTTP_UPDATE("[httpUpdate] runUpdate filesystem...\n");
+                } else {
+                    command = U_FLASH;
+                    DEBUG_HTTP_UPDATE("[httpUpdate] runUpdate flash...\n");
+                }
+
+                if (runUpdate(*tcp, len, md5, command)) {
+                    ret = HTTP_UPDATE_OK;
+                    DEBUG_HTTP_UPDATE("[httpUpdate] Update ok\n");
+                    http.end();
+                    // Warn main app we're all done
+                    if (_cbEnd) {
+                        _cbEnd();
+                    }
+
+#ifdef ATOMIC_FS_UPDATE
+                    if (_rebootOnUpdate) {
+#else
+                    if (_rebootOnUpdate && !spiffs) {
+#endif
+                        rp2040.restart();
+                    }
+
+                } else {
+                    ret = HTTP_UPDATE_FAILED;
+                    DEBUG_HTTP_UPDATE("[httpUpdate] Update failed\n");
+                }
+            }
+        } else {
+            _setLastError(HTTP_UE_SERVER_NOT_REPORT_SIZE);
+            ret = HTTP_UPDATE_FAILED;
+            DEBUG_HTTP_UPDATE("[httpUpdate] Content-Length was 0 or wasn't set by Server?!\n");
+        }
+        break;
+    case HTTP_CODE_NOT_MODIFIED:
+        ///< Not Modified (No updates)
+        ret = HTTP_UPDATE_NO_UPDATES;
+        break;
+    case HTTP_CODE_NOT_FOUND:
+        _setLastError(HTTP_UE_SERVER_FILE_NOT_FOUND);
+        ret = HTTP_UPDATE_FAILED;
+        break;
+    case HTTP_CODE_FORBIDDEN:
+        _setLastError(HTTP_UE_SERVER_FORBIDDEN);
+        ret = HTTP_UPDATE_FAILED;
+        break;
+    case HTTP_CODE_UNAUTHORIZED:
+        _setLastError(HTTP_UE_SERVER_UNAUTHORIZED);
+        ret = HTTP_UPDATE_FAILED;
+        break;
+    default:
+        _setLastError(HTTP_UE_SERVER_WRONG_HTTP_CODE);
+        ret = HTTP_UPDATE_FAILED;
+        DEBUG_HTTP_UPDATE("[httpUpdate] HTTP Code is (%d)\n", code);
+        //http.writeToStream(&Serial1);
+        break;
+    }
+
+    http.end();
+    return ret;
+}
+
+/**
+    write Update to flash
+    @param in Stream&
+    @param size uint32_t
+    @param md5 String
+    @return true if Update ok
+*/
+bool HTTPUpdate::runUpdate(Stream& in, uint32_t size, const String& md5, int command) {
+
+    StreamString error;
+
+    if (_cbProgress) {
+        Update.onProgress(_cbProgress);
+    }
+
+    if (!Update.begin(size, command)) {
+        _setLastError(Update.getError());
+        Update.printError(error);
+        error.trim(); // remove line ending
+        DEBUG_HTTP_UPDATE("[httpUpdate] Update.begin failed! (%s)\n", error.c_str());
+        return false;
+    }
+
+    if (_cbProgress) {
+        _cbProgress(0, size);
+    }
+
+    if (md5.length()) {
+        if (!Update.setMD5(md5.c_str())) {
+            _setLastError(HTTP_UE_SERVER_FAULTY_MD5);
+            DEBUG_HTTP_UPDATE("[httpUpdate] Update.setMD5 failed! (%s)\n", md5.c_str());
+            return false;
+        }
+    }
+
+    if (Update.writeStream(in) != size) {
+        _setLastError(Update.getError());
+        Update.printError(error);
+        error.trim(); // remove line ending
+        DEBUG_HTTP_UPDATE("[httpUpdate] Update.writeStream failed! (%s)\n", error.c_str());
+        return false;
+    }
+
+    if (_cbProgress) {
+        _cbProgress(size, size);
+    }
+
+    if (!Update.end()) {
+        _setLastError(Update.getError());
+        Update.printError(error);
+        error.trim(); // remove line ending
+        DEBUG_HTTP_UPDATE("[httpUpdate] Update.end failed! (%s)\n", error.c_str());
+        return false;
+    }
+
+    return true;
+}
+
+#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_HTTPUPDATE)
+HTTPUpdate httpUpdate;
+#endif

libraries/HTTPUpdate/src/HTTPUpdate.h

@@ -0,0 +1,163 @@
+/**
+
+    @file ESP8266HTTPUpdate.h
+    @date 21.06.2015
+    @author Markus Sattler
+
+    Copyright (c) 2015 Markus Sattler. All rights reserved.
+    This file is part of the ESP8266 Http Updater.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#pragma once
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <WiFiClient.h>
+#include <WiFiUdp.h>
+#include <HTTPClient.h>
+
+#ifdef DEBUG_ESP_HTTP_UPDATE
+#ifdef DEBUG_ESP_PORT
+#define DEBUG_HTTP_UPDATE(fmt, ...) DEBUG_ESP_PORT.printf_P( (PGM_P)PSTR(fmt), ## __VA_ARGS__ )
+#endif
+#endif
+
+#ifndef DEBUG_HTTP_UPDATE
+#define DEBUG_HTTP_UPDATE(...) do { (void)0; } while(0)
+#endif
+
+/// note we use HTTP client errors too so we start at 100
+//TODO - in v3.0.0 make this an enum
+constexpr int HTTP_UE_TOO_LESS_SPACE            = (-100);
+constexpr int HTTP_UE_SERVER_NOT_REPORT_SIZE    = (-101);
+constexpr int HTTP_UE_SERVER_FILE_NOT_FOUND     = (-102);
+constexpr int HTTP_UE_SERVER_FORBIDDEN          = (-103);
+constexpr int HTTP_UE_SERVER_WRONG_HTTP_CODE    = (-104);
+constexpr int HTTP_UE_SERVER_FAULTY_MD5         = (-105);
+constexpr int HTTP_UE_BIN_VERIFY_HEADER_FAILED  = (-106);
+constexpr int HTTP_UE_BIN_FOR_WRONG_FLASH       = (-107);
+constexpr int HTTP_UE_SERVER_UNAUTHORIZED       = (-108);
+
+enum HTTPUpdateResult {
+    HTTP_UPDATE_FAILED,
+    HTTP_UPDATE_NO_UPDATES,
+    HTTP_UPDATE_OK
+};
+
+typedef HTTPUpdateResult t_httpUpdate_return; // backward compatibility
+
+using HTTPUpdateStartCB = std::function<void()>;
+using HTTPUpdateEndCB = std::function<void()>;
+using HTTPUpdateErrorCB = std::function<void(int)>;
+using HTTPUpdateProgressCB = std::function<void(int, int)>;
+
+class HTTPUpdate {
+public:
+    HTTPUpdate(void);
+    HTTPUpdate(int httpClientTimeout);
+    ~HTTPUpdate(void);
+
+    void rebootOnUpdate(bool reboot) {
+        _rebootOnUpdate = reboot;
+    }
+
+    /**
+        set true to follow redirects.
+        @param follow
+        @deprecated Please use `setFollowRedirects(followRedirects_t follow)`
+    */
+    void followRedirects(bool follow) __attribute__((deprecated)) {
+        _followRedirects = follow ? HTTPC_STRICT_FOLLOW_REDIRECTS : HTTPC_DISABLE_FOLLOW_REDIRECTS;
+    }
+    /**
+        set redirect follow mode. See `followRedirects_t` enum for available modes.
+        @param follow
+    */
+    void setFollowRedirects(followRedirects_t follow) {
+        _followRedirects = follow;
+    }
+
+    void closeConnectionsOnUpdate(bool sever) {
+        _closeConnectionsOnUpdate = sever;
+    }
+
+    void setMD5sum(const String &md5Sum) {
+        _md5Sum = md5Sum;
+    }
+
+    void setAuthorization(const String& user, const String& password);
+    void setAuthorization(const String& auth);
+
+    t_httpUpdate_return update(WiFiClient& client, const String& url, const String& currentVersion = "");
+    t_httpUpdate_return update(WiFiClient& client, const String& host, uint16_t port, const String& uri = "/",
+                               const String& currentVersion = "");
+    t_httpUpdate_return updateFS(WiFiClient& client, const String& url, const String& currentVersion = "");
+
+    t_httpUpdate_return update(const String& url, const String& currentVersion = "");
+    t_httpUpdate_return update(const String& host, uint16_t port, const String& uri = "/", const String& currentVersion = "");
+    t_httpUpdate_return updateFS(const String& url, const String& currentVersion = "");
+
+    // Notification callbacks
+    void onStart(HTTPUpdateStartCB cbOnStart)          {
+        _cbStart = cbOnStart;
+    }
+    void onEnd(HTTPUpdateEndCB cbOnEnd)                {
+        _cbEnd = cbOnEnd;
+    }
+    void onError(HTTPUpdateErrorCB cbOnError)          {
+        _cbError = cbOnError;
+    }
+    void onProgress(HTTPUpdateProgressCB cbOnProgress) {
+        _cbProgress = cbOnProgress;
+    }
+
+    int getLastError(void);
+    String getLastErrorString(void);
+
+protected:
+    t_httpUpdate_return handleUpdate(HTTPClient& http, const String& currentVersion, bool spiffs = false);
+    bool runUpdate(Stream& in, uint32_t size, const String& md5, int command = U_FLASH);
+
+    // Set the error and potentially use a CB to notify the application
+    void _setLastError(int err) {
+        _lastError = err;
+        if (_cbError) {
+            _cbError(err);
+        }
+    }
+    int _lastError;
+    bool _rebootOnUpdate = true;
+    bool _closeConnectionsOnUpdate = true;
+    String _user;
+    String _password;
+    String _auth;
+    String _md5Sum;
+private:
+    int _httpClientTimeout;
+    followRedirects_t _followRedirects = HTTPC_DISABLE_FOLLOW_REDIRECTS;
+
+    // Callbacks
+    HTTPUpdateStartCB    _cbStart;
+    HTTPUpdateEndCB      _cbEnd;
+    HTTPUpdateErrorCB    _cbError;
+    HTTPUpdateProgressCB _cbProgress;
+};
+
+#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_HTTPUPDATE)
+extern HTTPUpdate httpUpdate;
+#endif

libraries/I2S/src/I2S.h

@@ -74,7 +74,7 @@ public:
         return write((uint32_t)s);
     }
 
-    // Write 32 bit value to port, user responsbile for packing/alignment, etc.
+    // Write 32 bit value to port, user responsible for packing/alignment, etc.
     size_t write(int32_t val, bool sync);
 
     // Write sample to I2S port, will block until completed
@@ -83,7 +83,7 @@ public:
     size_t write24(int32_t l, int32_t r); // Note that 24b must have values left-aligned (i.e. 0xABCDEF00)
     size_t write32(int32_t l, int32_t r);
 
-    // Read 32 bit value to port, user responsbile for packing/alignment, etc.
+    // Read 32 bit value to port, user responsible for packing/alignment, etc.
     size_t read(int32_t *val, bool sync);
 
     // Read samples from I2S port, will block until data available

libraries/LEAmDNS/src/LEAmDNS.h

@@ -1100,7 +1100,7 @@ protected:
         };
 
     public:
-        uint16_t            m_u16ID;            // Query ID (used only in lagacy queries)
+        uint16_t            m_u16ID;            // Query ID (used only in legacy queries)
         stcMDNS_RRQuestion* m_pQuestions;       // A list of queries
         uint8_t             m_u8HostReplyMask;  // Flags for reply components/answers
         bool                m_bLegacyQuery;     // Flag: Legacy query

libraries/LEAmDNS/src/LEAmDNS_Control.cpp

@@ -1980,7 +1980,7 @@ uint8_t MDNSResponder::_replyMaskForHost(const MDNSResponder::stcMDNS_RRHeader&
 #ifdef MDNS_IP6_SUPPORT
             // TODO
 #endif
-        }  // Address qeuest
+        }  // Address quest
 
         stcMDNS_RRDomain hostDomain;
         if ((_buildDomainForHost(m_pcHostname, hostDomain))

libraries/SD/src/SD.h

@@ -32,8 +32,12 @@
 
 class SDClass {
 public:
-    boolean begin(uint8_t csPin, uint32_t cfg = SPI_HALF_SPEED) {
-        SDFS.setConfig(SDFSConfig(csPin, cfg));
+    boolean begin(uint8_t csPin, HardwareSPI &spi) {
+        SDFS.setConfig(SDFSConfig(csPin, SPI_HALF_SPEED, spi));
+        return (boolean)SDFS.begin();
+    }
+    boolean begin(uint8_t csPin, uint32_t cfg = SPI_HALF_SPEED, HardwareSPI &spi = SPI) {
+        SDFS.setConfig(SDFSConfig(csPin, cfg, spi));
         return (boolean)SDFS.begin();
     }
 

libraries/SDFS/src/SDFS.h

@@ -45,7 +45,7 @@ class SDFSConfig : public FSConfig {
 public:
     static constexpr uint32_t FSId = 0x53444653;
 
-    SDFSConfig(uint8_t csPin = 4, uint32_t spi = SD_SCK_MHZ(10)) : FSConfig(FSId, false), _csPin(csPin), _part(0), _spiSettings(spi)  { }
+    SDFSConfig(uint8_t csPin = 4, uint32_t spi = SD_SCK_MHZ(10), HardwareSPI &port = SPI) : FSConfig(FSId, false), _csPin(csPin), _part(0), _spiSettings(spi), _spi(&port)  { }
 
     SDFSConfig setAutoFormat(bool val = true) {
         _autoFormat = val;
@@ -55,10 +55,14 @@ public:
         _csPin = pin;
         return *this;
     }
-    SDFSConfig setSPI(uint32_t spi) {
+    SDFSConfig setSPISpeed(uint32_t spi) {
         _spiSettings = spi;
         return *this;
     }
+    SDFSConfig setSPI(HardwareSPI &spi) {
+        _spi = &spi;
+        return true;
+    }
     SDFSConfig setPart(uint8_t part) {
         _part = part;
         return *this;
@@ -68,6 +72,7 @@ public:
     uint8_t   _csPin;
     uint8_t   _part;
     uint32_t  _spiSettings;
+    HardwareSPI *_spi;
 };
 
 class SDFSImpl : public FSImpl {
@@ -146,10 +151,11 @@ public:
         if (_mounted) {
             return true;
         }
-        _mounted = _fs.begin(_cfg._csPin, _cfg._spiSettings);
+        SdSpiConfig ssc(_cfg._csPin, SHARED_SPI, _cfg._spiSettings, _cfg._spi);
+        _mounted = _fs.begin(ssc);
         if (!_mounted && _cfg._autoFormat) {
             format();
-            _mounted = _fs.begin(_cfg._csPin, _cfg._spiSettings);
+            _mounted = _fs.begin(ssc);
         }
         FsDateTime::setCallback(dateTimeCB);
         return _mounted;

libraries/Updater/src/Updater.cpp

@@ -25,8 +25,6 @@
 #include <hardware/flash.h>
 #include <PicoOTA.h>
 
-#define DEBUG_UPDATER Serial
-
 #include <Updater_Signing.h>
 #ifndef ARDUINO_SIGNING
 #define ARDUINO_SIGNING 0
@@ -200,7 +198,7 @@ bool UpdaterClass::end(bool evenIfRemaining) {
 
         int binSize = _size;
         if (expectedSigLen > 0) {
-            _size -= (sigLen + sizeof(uint32_t) /* The siglen word */);
+            binSize -= (sigLen + sizeof(uint32_t) /* The siglen word */);
         }
         _hash->begin();
 #ifdef DEBUG_UPDATER
@@ -414,30 +412,37 @@ void UpdaterClass::_setError(int error) {
 }
 
 void UpdaterClass::printError(Print &out) {
-    out.printf_P(PSTR("ERROR[%u]: "), _error);
+    String err;
+    err = "ERROR[";
+    err += _error;
+    err += "]: ";
     if (_error == UPDATE_ERROR_OK) {
-        out.println(F("No Error"));
+        err += "No Error";
     } else if (_error == UPDATE_ERROR_WRITE) {
-        out.println(F("Flash Write Failed"));
+        err += "Flash Write Failed";
     } else if (_error == UPDATE_ERROR_ERASE) {
-        out.println(F("Flash Erase Failed"));
+        err += "Flash Erase Failed";
     } else if (_error == UPDATE_ERROR_READ) {
-        out.println(F("Flash Read Failed"));
+        err += "Flash Read Failed";
     } else if (_error == UPDATE_ERROR_SPACE) {
-        out.println(F("Not Enough Space"));
+        err += "Not Enough Space";
     } else if (_error == UPDATE_ERROR_SIZE) {
-        out.println(F("Bad Size Given"));
+        err += "Bad Size Given";
     } else if (_error == UPDATE_ERROR_STREAM) {
-        out.println(F("Stream Read Timeout"));
+        err += "Stream Read Timeout";
     } else if (_error == UPDATE_ERROR_NO_DATA) {
-        out.println(F("No data supplied"));
+        err += "No data supplied";
     } else if (_error == UPDATE_ERROR_MD5) {
-        out.printf_P(PSTR("MD5 Failed: expected:%s, calculated:%s\n"), _target_md5.c_str(), _md5.toString().c_str());
+        err += "MD5 Failed: expected:";
+        err += _target_md5.c_str();
+        err += " calculated:";
+        err += _md5.toString();
     } else if (_error == UPDATE_ERROR_SIGN) {
-        out.println(F("Signature verification failed"));
+        err += "Signature verification failed";
     } else {
-        out.println(F("UNKNOWN"));
+        err += "UNKNOWN";
     }
+    out.println(err.c_str());
 }
 
 UpdaterClass Update;

libraries/WiFi/examples/WiFiClient/WiFiClient.ino

@@ -16,6 +16,8 @@ const char* password = STAPSK;
 const char* host = "djxmmx.net";
 const uint16_t port = 17;
 
+WiFiMulti multi;
+
 void setup() {
   Serial.begin(115200);
 
@@ -26,11 +28,12 @@ void setup() {
   Serial.print("Connecting to ");
   Serial.println(ssid);
 
-  WiFi.begin(ssid, password);
+  multi.addAP(ssid, password);
 
-  while (WiFi.status() != WL_CONNECTED) {
-    delay(500);
-    Serial.print(".");
+  if (multi.run() != WL_CONNECTED) {
+    Serial.println("Unable to connect to network, rebooting in 10 seconds...");
+    delay(10000);
+    rp2040.reboot();
   }
 
   Serial.println("");

libraries/WiFi/keywords.txt

@@ -13,6 +13,7 @@ WiFiClient	KEYWORD1
 WiFiSSLClient	KEYWORD1
 WiFiServer	KEYWORD1
 WiFiUDP	KEYWORD1
+WiFiMulti	KEYWORD1
 NTP	KEYWORD1
 
 
@@ -48,6 +49,7 @@ parsePacket	KEYWORD2
 remoteIP	KEYWORD2
 remotePort	KEYWORD2
 mode	KEYWORD2
+addAP	KEYWORD2
 
 beginAP	KEYWORD2
 beginEnterprise	KEYWORD2
@@ -61,6 +63,26 @@ beginMulticast	KEYWORD2
 setTimeout	KEYWORD2
 waitSet	KEYWORD2
 
+setSession	KEYWORD2
+setInsecure	KEYWORD2
+setKnownKey	KEYWORD2
+setFingerprint	KEYWORD2
+allowSelfSignedCerts	KEYWORD2
+setTrustAnchors	KEYWORD2
+setX509Time	KEYWORD2
+setClientRSACert	KEYWORD2
+setClientECCert	KEYWORD2
+setBufferSizes	KEYWORD2
+setCertStore	KEYWORD2
+setCiphers	KEYWORD2
+setCiphersLessSecure	KEYWORD2
+setSSLVersion	KEYWORD2
+setCACert	KEYWORD2
+setCertificate	KEYWORD2
+setPrivateKey	KEYWORD2
+loadCACert	KEYWORD2
+loadCertificate	KEYWORD2
+loadPrivateKey	KEYWORD2
 
 #######################################
 # Constants (LITERAL1)

libraries/WiFi/src/BearSSLHelpers.cpp

@@ -29,7 +29,8 @@
 #include <string.h>
 #include <Arduino.h>
 #include "StackThunk.h"
-//#include <Updater_Signing.h>
+
+#include <Updater_Signing.h>
 #ifndef ARDUINO_SIGNING
 #define ARDUINO_SIGNING 0
 #endif

libraries/WiFi/src/WiFi.h

@@ -12,4 +12,6 @@
 #include "WiFiServerSecure.h"
 #include "WiFiUdp.h"
 
+#include "WiFiMulti.h"
+
 #include "WiFiNTP.h"

libraries/WiFi/src/WiFiClass.cpp

@@ -96,6 +96,8 @@ int WiFiClass::begin(const char* ssid, const char *passphrase) {
     if (!_wifi.begin()) {
         return WL_IDLE_STATUS;
     }
+    // Enable CYW43 event debugging (make sure Debug Port is set)
+    //cyw43_state.trace_flags = 0xffff;
     while (!_calledESP && ((millis() - start < (uint32_t)2 * _timeout)) && !connected()) {
         delay(10);
     }
@@ -152,7 +154,7 @@ uint8_t WiFiClass::beginAP(const char *ssid, const char* passphrase) {
 #endif
 
 bool WiFiClass::connected() {
-    return (_apMode && _wifiHWInitted) || (_wifi.connected() && localIP().isSet());
+    return (_apMode && _wifiHWInitted) || (_wifi.connected() && localIP().isSet() && (cyw43_wifi_link_status(&cyw43_state, _apMode ? 1 : 0) == CYW43_LINK_JOIN));
 }
 
 /*  Change Ip configuration settings disabling the dhcp client
@@ -223,6 +225,9 @@ void WiFiClass::setDNS(IPAddress dns_server1, IPAddress dns_server2) {
 void WiFiClass::setHostname(const char* name) {
     _wifi.setHostname(name);
 }
+const char *WiFiClass::getHostname() {
+    return _wifi.getHostname();
+}
 
 /*
     Disconnect from the network

libraries/WiFi/src/WiFiClass.h

@@ -91,6 +91,57 @@ public:
     uint8_t beginAP(const char *ssid, const char* passphrase);
     uint8_t beginAP(const char *ssid, const char* passphrase, uint8_t channel);
 
+    // ESP8266 compatible calls
+    bool softAP(const char* ssid, const char* psk = NULL, int channel = 1, int ssid_hidden = 0, int max_connection = 4) {
+        (void) ssid_hidden;
+        (void) max_connection;
+        return beginAP(ssid, psk, channel) == WL_CONNECTED;
+    }
+
+    bool softAP(const String& ssid, const String& psk = "", int channel = 1, int ssid_hidden = 0, int max_connection = 4) {
+        (void) ssid_hidden;
+        (void) max_connection;
+        if (psk != "") {
+            return beginAP(ssid.c_str(), psk.c_str(), channel) == WL_CONNECTED;
+        } else {
+            return beginAP(ssid.c_str(), channel) == WL_CONNECTED;
+        }
+    }
+
+    bool softAPConfig(IPAddress local_ip, IPAddress gateway, IPAddress subnet) {
+        config(local_ip, local_ip, gateway, subnet);
+        return true;
+    }
+
+    bool softAPdisconnect(bool wifioff = false) {
+        (void) wifioff;
+        end();
+        return true;
+    }
+
+    uint8_t softAPgetStationNum();
+
+    IPAddress softAPIP() {
+        return localIP();
+    }
+
+    uint8_t* softAPmacAddress(uint8_t* mac) {
+        return macAddress(mac);
+    }
+
+    String softAPmacAddress(void) {
+        uint8_t mac[8];
+        macAddress(mac);
+        char buff[32];
+        sprintf(buff, "%02x:%02x:%02x:%02x:%02x:%02x", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);
+        return String(buff);
+    }
+
+    String softAPSSID() {
+        return String(SSID());
+    }
+
+
     // TODO - EAP is not supported by the driver.  Maybe some way of user-level wap-supplicant in the future?
     //uint8_t beginEnterprise(const char* ssid, const char* username, const char* password);
     //uint8_t beginEnterprise(const char* ssid, const char* username, const char* password, const char* identity);
@@ -147,6 +198,7 @@ public:
 
     */
     void setHostname(const char* name);
+    const char *getHostname();
 
     /*
         Disconnect from the network
@@ -163,6 +215,13 @@ public:
         return: pointer to uint8_t array with length WL_MAC_ADDR_LENGTH
     */
     uint8_t* macAddress(uint8_t* mac);
+    String macAddress(void) {
+        uint8_t mac[8];
+        macAddress(mac);
+        char buff[32];
+        sprintf(buff, "%02x:%02x:%02x:%02x:%02x:%02x", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);
+        return String(buff);
+    }
 
     /*
         Get the interface IP address.

libraries/WiFi/src/WiFiClient.h

@@ -23,7 +23,6 @@
 #pragma once
 
 #include <memory>
-#include "WiFi.h"
 #include "Print.h"
 #include "Client.h"
 #include "IPAddress.h"

libraries/WiFi/src/WiFiClientSecureBearSSL.cpp

@@ -1224,7 +1224,7 @@ bool WiFiClientSecureCtx::_connectSSL(const char* hostName) {
     _x509_insecure = nullptr;
     _x509_knownkey = nullptr;
 
-    // reduce timeout after successful handshake to fail fast if server stop accepting our data for whathever reason
+    // reduce timeout after successful handshake to fail fast if server stop accepting our data for whatever reason
     if (ret) {
         _timeout = 5000;
     }

libraries/WiFi/src/WiFiMulti.cpp

@@ -0,0 +1,106 @@
+/*
+    WiFiMulti.cpp - Choose best RSSI and connect
+    Copyright (c) 2022 Earle F. Philhower, III
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Modified by Ivan Grokhotkov, January 2015 - esp8266 support
+*/
+
+#include "WiFi.h"
+#include <string.h>
+#include <algorithm>
+
+WiFiMulti::WiFiMulti() {
+}
+
+WiFiMulti::~WiFiMulti() {
+    while (!_list.empty()) {
+        struct _AP ap = _list.front();
+        _list.pop_front();
+        free(ap.ssid);
+        free(ap.pass);
+    }
+}
+
+bool WiFiMulti::addAP(const char *ssid, const char *pass) {
+    struct _AP ap;
+    if (!ssid) {
+        return false;
+    }
+    ap.ssid = strdup(ssid);
+    if (!ap.ssid) {
+        return false;
+    }
+    if (pass) {
+        ap.pass = strdup(pass);
+        if (!ap.pass) {
+            free(ap.ssid);
+            return false;
+        }
+    } else {
+        ap.pass = nullptr;
+    }
+    DEBUGV("[WIFIMULTI] Adding: '%s' %s' to list\n", ap.ssid, ap.pass);
+    _list.push_front(ap);
+    return true;
+}
+
+uint8_t WiFiMulti::run(uint32_t to) {
+
+    // If we're already connected, don't re-scan/etc.
+    if (WiFi.status() == WL_CONNECTED) {
+        return WL_CONNECTED;
+    }
+
+    int cnt = WiFi.scanNetworks();
+    if (!cnt) {
+        return WL_DISCONNECTED;
+    }
+
+    // Find the highest RSSI network in our list.  Probably more efficient searches, but the list
+    // of APs will have < 5 in > 99% of the cases so it's a don't care.
+    int maxRSSID = -999;
+    std::list<struct _AP>::iterator hit;
+    bool found = false;
+    for (int i = 0; i < cnt; i++) {
+        if (WiFi.RSSI(i) > maxRSSID) {
+            for (auto j = _list.begin(); j != _list.end(); j++) {
+                DEBUGV("[WIFIMULTI] Checking for '%s' at %d\n", WiFi.SSID(i), WiFi.RSSI(i));
+                if (!strcmp(j->ssid, WiFi.SSID(i))) {
+                    hit = j;
+                    maxRSSID = WiFi.RSSI(i);
+                    found = true;
+                }
+            }
+        }
+    }
+    if (!found) {
+        return WL_DISCONNECTED;
+    }
+
+    // Connect!
+    DEBUGV("[WIFIMULTI] Connecting to '%s' and '%s'\n", hit->ssid, hit->pass);
+    uint32_t start = millis();
+    if (hit->pass) {
+        WiFi.begin(hit->ssid, hit->pass);
+    } else {
+        WiFi.begin(hit->ssid);
+    }
+    while (!WiFi.connected() && (millis() - start < to)) {
+        delay(5);
+    }
+    return WiFi.status();
+}

libraries/WiFi/src/WiFiMulti.h

@@ -0,0 +1,43 @@
+/*
+    WiFiMulti.h - Choose best RSSI and connect
+    Copyright (c) 2022 Earle F. Philhower, III
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Modified by Ivan Grokhotkov, January 2015 - esp8266 support
+*/
+
+#pragma once
+
+#include <list>
+#include <stdint.h>
+#include "wl_definitions.h"
+
+class WiFiMulti {
+public:
+    WiFiMulti();
+    ~WiFiMulti();
+
+    bool addAP(const char *ssid, const char *pass = NULL);
+
+    uint8_t run(uint32_t to = 10000);
+
+private:
+    struct _AP {
+        char *ssid;
+        char *pass;
+    };
+    std::list<struct _AP> _list;
+};

libraries/WiFi/src/dhcpserver/dhcpserver.c

@@ -63,7 +63,7 @@
 #define PORT_DHCP_SERVER (67)
 #define PORT_DHCP_CLIENT (68)
 
-#define DEFAULT_DNS MAKE_IP4(8, 8, 8, 8)
+//#define DEFAULT_DNS MAKE_IP4(8, 8, 8, 8)
 #define DEFAULT_LEASE_TIME_S (24 * 60 * 60) // in seconds
 
 #define MAC_LEN (6)
@@ -276,9 +276,10 @@ static void dhcp_server_process(void *arg, struct udp_pcb *upcb, struct pbuf *p,
     opt_write_n(&opt, DHCP_OPT_SERVER_ID, 4, ip_2_ip4(&d->ip));
     opt_write_n(&opt, DHCP_OPT_SUBNET_MASK, 4, ip_2_ip4(&d->nm));
     opt_write_n(&opt, DHCP_OPT_ROUTER, 4, ip_2_ip4(&d->ip)); // aka gateway; can have multiple addresses
-    opt_write_u32(&opt, DHCP_OPT_DNS, DEFAULT_DNS); // can have multiple addresses
+    opt_write_n(&opt, DHCP_OPT_DNS, 4, ip_2_ip4(&d->ip)); // can have multiple addresses
     opt_write_u32(&opt, DHCP_OPT_IP_LEASE_TIME, DEFAULT_LEASE_TIME_S);
     *opt++ = DHCP_OPT_END;
+
     dhcp_socket_sendto(&d->udp, &dhcp_msg, opt - (uint8_t *)&dhcp_msg, 0xffffffff, PORT_DHCP_CLIENT);
 
 ignore_request:

libraries/WiFi/src/wl_definitions.h

@@ -43,7 +43,7 @@ extern "C" {
 #define WL_IPV4_LENGTH 4
 // Maximum size of a SSID list
 #define WL_NETWORKS_LIST_MAXNUM	10
-// Maxmium number of socket
+// Maximum number of socket
 #define	WIFI_MAX_SOCK_NUM	10
 // Socket not available constant
 #define SOCK_NOT_AVAIL  255

libraries/lwIP_CYW43/src/utility/CYW43shim.cpp

@@ -26,6 +26,18 @@ extern "C" {
 #include "pico/cyw43_arch.h"
 #include <Arduino.h>
 
+// From cyw43_ctrl.c
+#define WIFI_JOIN_STATE_KIND_MASK (0x000f)
+#define WIFI_JOIN_STATE_ACTIVE  (0x0001)
+#define WIFI_JOIN_STATE_FAIL    (0x0002)
+#define WIFI_JOIN_STATE_NONET   (0x0003)
+#define WIFI_JOIN_STATE_BADAUTH (0x0004)
+#define WIFI_JOIN_STATE_AUTH    (0x0200)
+#define WIFI_JOIN_STATE_LINK    (0x0400)
+#define WIFI_JOIN_STATE_KEYED   (0x0800)
+#define WIFI_JOIN_STATE_ALL     (0x0e01)
+
+
 netif *CYW43::_netif = nullptr;
 
 CYW43::CYW43(int8_t cs, arduino::SPIClass& spi, int8_t intrpin) {
@@ -124,6 +136,7 @@ extern "C" void cyw43_cb_tcpip_set_link_down(cyw43_t *self, int itf) {
     if (CYW43::_netif) {
         netif_set_link_down(CYW43::_netif);
     }
+    self->wifi_join_state &= ~WIFI_JOIN_STATE_ACTIVE;
 }
 
 extern "C" int cyw43_tcpip_link_status(cyw43_t *self, int itf) {

libraries/rp2040/examples/Bootsel/Bootsel.ino

@@ -1,5 +1,5 @@
 /* Simple sketch to do something on a BOOTSEL press */
-/* Releaed into the public domain */
+/* Released into the public domain */
 
 void setup() {
   Serial.begin(115200);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "framework-arduinopico",
-  "version": "1.20400.0",
+  "version": "1.20401.0",
   "description": "Arduino Wiring-based Framework (RPi Pico RP2040)",
   "keywords": [
     "framework",

platform.txt

@@ -20,7 +20,7 @@
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
 name=Raspberry Pi RP2040 Boards
-version=2.4.0
+version=2.4.1
 
 runtime.tools.pqt-gcc.path={runtime.platform.path}/system/arm-none-eabi
 runtime.tools.pqt-python3.path={runtime.platform.path}/system/python3
@@ -110,7 +110,7 @@ recipe.hooks.sketch.prebuild.pattern="{runtime.tools.pqt-python3.path}/python3"
 recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {build.flags.optimize} {includes} "{source_file}" -o "{object_file}"
 
 ## Compile c++ files
-recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {build.flags.optimize} {includes} "{source_file}" -o "{object_file}"
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" -I "{build.path}/core" {compiler.cpp.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {build.flags.optimize} {includes} "{source_file}" -o "{object_file}"
 
 ## Compile S files
 recipe.S.o.pattern="{compiler.path}{compiler.S.cmd}" {compiler.S.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.S.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {includes} "{source_file}" -o "{object_file}"

tests/restyle.sh

@@ -7,7 +7,7 @@ for dir in ./cores/rp2040 ./libraries/EEPROM ./libraries/I2S \
            ./libraries/WiFi ./libraries/lwIP_Ethernet ./libraries/lwIP_CYW43 \
            ./libraries/FreeRTOS/src ./libraries/LEAmDNS ./libraries/MD5Builder \
            ./libraries/PicoOTA ./libraries/SDFS ./libraries/ArduinoOTA \
-           ./libraries/Updater; do
+           ./libraries/Updater ./libraries/HTTPClient ./libraries/HTTPUpdate; do
     find $dir -type f \( -name "*.c" -o -name "*.h" -o -name "*.cpp" \) -a  \! -path '*api*' -exec astyle --suffix=none --options=./tests/astyle_core.conf \{\} \;
     find $dir -type f -name "*.ino" -exec astyle --suffix=none --options=./tests/astyle_examples.conf \{\} \;
 done

tools/build.py

@@ -65,9 +65,7 @@ def compile(tmp_dir, sketch, cache, tools_dir, hardware_dir, ide_path, f, args):
                'dbgport={dbgport},' \
                'dbglvl={dbglvl},' \
                'usbstack={usbstack}'.format(**vars(args))
-    if "/WiFi" in sketch:
-        fqbn = fqbn.replace("rpipico", "rpipicow")
-    if "/ArduinoOTA" in sketch:
+    if ("/WiFi" in sketch) or ("/ArduinoOTA" in sketch) or ("/HTTPClient" in sketch) or ('/HTTPUpdate' in sketch):
         fqbn = fqbn.replace("rpipico", "rpipicow")
     cmd += [fqbn]
     cmd += ['-built-in-libraries', ide_path + '/libraries']