fix(deps): update module github.com/pires/go-proxyproto to v0.15.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/pires/go-proxyproto	v0.13.0 → v0.15.0

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Release Notes

pires/go-proxyproto (github.com/pires/go-proxyproto)

v0.15.0

Compare Source

v0.15.0

This release aligns the library with PROXY protocol spec 3.4 (2026/04/27). It tightens parsing and trust behavior to match the spec's requirements — which makes some previously accepted inputs and configurations fail loudly — and adds first-class support for the PROXY protocol over UDP.

⚠️ Breaking changes

The PROXY header is now required by default (2cd5f00)

• A new DefaultPolicy package variable, set to REQUIRE, is applied by NewConn and Listener.Accept when no policy is configured. The spec forbids guessing whether a header is present, so headerless connections now fail their first Read with ErrNoProxyProtocol.
• To restore the previous lax behavior: proxyproto.DefaultPolicy = proxyproto.USE.
• TrustProxyHeaderFrom is now strict: trusted peers get REQUIRE and untrusted peers are dropped by Accept with an error wrapping ErrInvalidUpstream. Previously, untrusted headerless clients could slip through as raw connections.

Stricter v1/v2 header parsing per spec 3.4 (5914db8)

• v1: the full PROXY token is validated; IPv6 zone IDs are rejected; plain IPv4 addresses in TCP6 lines are rejected (set V1AcceptIPv4InTCP6 for nginx interop); ports are parsed with leading zeros rejected and ranges validated on formatting.
• v2: the family/transport whitelist now applies to LOCAL commands too, rejecting undefined bytes per spec 2.2. LOCAL headers with a valid address block decode addresses and TLVs and round-trip; ill-fitting ones are normalized to UNSPEC.
• New MaxV2HeaderSize variable bounds the declared v2 length (default 4096) — raise it if you carry large TLVs such as PP2_SUBTYPE_SSL_CLIENT_CERT.

✨ New features

PROXY protocol over UDP (499ef90, fixes #​79)

• New ParseUDPDatagram and Header.FormatUDPDatagram implement the spec's per-datagram semantics (header and payload share a single datagram) for use with any net.PacketConn.
• The library deliberately ships no net.PacketConn wrapper — reply routing needs an application-policy flow table — but examples/udppacketconn is a runnable sketch of that pattern, alongside examples/udpserver and examples/udpclient for the plain paths.

Reworked trust policies (2cd5f00)

• New PolicyFromRanges(ranges, matched, unmatched) and MustPolicyFromRanges supersede the whitelist policy family, which is deprecated and now delegates to them. The (REQUIRE, IGNORE) combination covers mixed proxied/direct traffic the old family couldn't express.
• New CIDR-capable TrustProxyHeaderFromRanges.
• All built-in policies wrap address-classification failures in ErrInvalidUpstream, so a single unclassifiable peer can no longer stop an accept loop.

TLV registry and PP2SSL caught up to spec 3.4 (4e80228)

• Registered() now includes PP2_TYPE_GROUP, PP2_SUBTYPE_SSL_SIG_SCHEME, and PP2_SUBTYPE_SSL_CLIENT_CERT.
• New PP2SSL accessors: SSLSigAlg, SSLKeyAlg, SSLGroup, SSLSigScheme.

🐛 Fixes

• Header.EqualsTo no longer panics on nil addresses (5914db8).
• formatVersion2 folds TLV length into the declared length for Unix families instead of emitting TLVs past it (5914db8).

🧪 Testing & CI

• New fuzz/table suites: exhaustive 256-transport-byte sweeps for both v2 commands, a LOCAL decode matrix, byte-for-byte round-trip stability, and FuzzRead parse–format–reparse invariants (5914db8).
• CI gains a fuzz job that auto-discovers fuzz targets and uploads crashers as artifacts; workflow actions bumped across the board (af4b18c).
• Coverage for the http2 serveConn TLS handshake-failure branch (b01bea4).

📚 Documentation

• README rewritten against spec 3.4: new Security section with the spec's trust requirements, a UDP section, an examples table, and warnings about the new REQUIRE default (bd986c0).

v0.14.0

Compare Source

What's Changed

• tls: revisit tests and docs by @​pires in #​174
• Several improvements by @​pires in #​175
• build(deps): bump golang.org/x/net from 0.39.0 to 0.55.0 by @​dependabot[bot] in #​176
• docs: README Usage section points to relevant examples by @​pires in #​177

Full Changelog: pires/go-proxyproto@v0.13.0...v0.14.0

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[renovate]

ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 1 additional dependency was updated

Details:

Package	Change
golang.org/x/net	v0.49.0 -> v0.55.0

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