`Utils.ParseQueryString` already unescapes every value, and
`BaseFmt.GetQueryDecoded` unescaped it again. A value that still held a
valid percent sequence after the first pass decayed on the second: an
obfuscation password of `ob%41fs` is exported as `ob%2541fs` and imported
back as `obAfs`. Only well-formed sequences are affected, which is why the
damage is silent - `100%` and `66%ff` survive untouched.
The same function also split each pair on every `=`, and skipped the pair
unless exactly two halves came out. RFC 3986 lists `=` among the
sub-delimiters a query value may carry, so only the first one separates the
key from the value, and `HttpUtility.ParseQueryString` reads a query string
the same way. Splitting on all of them discarded a syntactically valid
pair: `?ech=AAj+DQAEAAAAAA==` was lost entirely, and so was a `plugin`
value in the non-canonical SIP002 spelling, since those are `;` separated
`key=value` lists.
v2rayN percent-encodes both on export, so its own links were never
affected; what changes is that the parser now follows the grammar instead
of discarding a pair it cannot split in two.
Splitting on the first `=` only, and reading the value the parser already
decoded, fixes both. `ParseQueryString` keeps decoding because
`ConfigHandler` reads its result directly.
`GetQueryDecoded` and `GetQueryValue` are now equivalent; they are left
separate to keep this change small, and can be collapsed if you prefer.
The Hysteria2 URI scheme makes the port optional: "The hostname and
optional port of the server. If the port is omitted, it defaults to 443."
`Hysteria2Fmt.Resolve` assigned `url.Port` straight through, and
`System.Uri` answers -1 for an unregistered scheme that carries no port,
so `hysteria2://password@hy2.example/` imported as a profile with
`Port = -1`. `ProfileItem.IsValid` rejects any port outside 1..65535, so
such a link produced a profile that could never be used, and nothing said
why.
-1 is the only value that means "the port was omitted"; a ':' with no
digits after it maps to -1 as well. An explicit ":0" parses as 0 and
keeps the fate it has today - rejected by `IsValid` - rather than being
redirected to a server the link never named.
`ResolveRealm` takes its port from `HyRealm.RendezvousPort` instead of
the URI, so it is unaffected.
The added tests cover both spellings of the scheme, with and without a
trailing slash, a bare ':', and the resulting profile's validity. Two of
them are controls: an explicit port is still preserved, and an explicit
":0" still does not turn into 443.
`FmtHandlerTests` round-tripped VMess, VLESS, Shadowsocks and SOCKS.
`FmtHandler.GetShareUri` dispatches ten protocols, so Trojan, Hysteria2,
TUIC, Anytls, WireGuard and Naive were exported and re-imported untested,
and `WireguardFmt` was covered in the `Resolve` direction only.
Each new test exports a profile, imports the result and asserts the fields
that protocol carries in its URI: the flow for Trojan, the uuid/password
pair and the congestion control for TUIC, the obfuscation password and the
port range for Hysteria2, the peer keys, reserved bytes, interface address
and MTU for WireGuard, and the credentials plus the insecure concurrency
for Naive.
`ShareUriSuite_ShouldCoverAndRoundTripEveryExportableProtocol` compares the
profile-factory map against `Global.ProtocolShares` and round-trips every
entry, so a newly exportable protocol cannot be added without a case here.
Three things a round trip alone cannot prove are asserted on the wire form
instead. The allow-insecure flag is spelled per protocol since #9888 -
`allowInsecure` and `insecure` for Trojan, `allow_insecure` for TUIC,
`insecure` for Anytls and Hysteria2 - so an exporter and an importer that
agreed on the wrong name would otherwise round-trip cleanly. The WireGuard
test pins the percent-encoding of the base64 keys and the brackets around
the IPv6 literal. Hysteria2 keeps `CertSha` unset on purpose: the importer
turns `AllowInsecure` on by itself when a `pinSHA256` is present, which
would mask an exporter that stopped emitting `insecure=1`.
Fixtures are deterministic and no longer plain ASCII: a fixed uuid for
TUIC, real 32-byte base64 keys and an IPv6 address for WireGuard, and
reserved and non-Latin characters in passwords and remarks.
`ExportThenImport` derives the expected scheme, because `NaiveFmt` emits
`naive+https://` or `naive+quic://` and never the `naive://` prefix that
`Global.ProtocolShares` records for that type - that entry is only read
when importing.
sing-box requires realm.server_url as a full URL (https://host:port).
Bare host:port caused "missing host in realm server_url" on import.
Also forward stun_servers and clear ResolveRealm success message.
Fixes#9635
DHR60