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078c323ef3
The relay now accepts WebTransport sessions on the same UDP socket that
serves raw QUIC. The ALPN-multiplexing QUIC listener owns the socket and
dispatches incoming connections: "nb-quic" continues to the existing
relay handler, "h3" is handed to webtransport-go via http3.Server.
Browsers reach the relay over 443/udp without a second port.
Client side:
- Native builds keep using raw QUIC (no WT dialer registered).
- WASM/browser builds gain a WebTransport dialer that bridges syscall/js
to the browser's WebTransport API and uses datagrams (matching the
native QUIC dialer's semantics — no head-of-line blocking).
- The race dialer learned a transport hint so clients skip dialers a
given relay has not advertised.
Management protocol carries the hint as a new RelayEndpoint{url,
transports[]} list on RelayConfig, mirroring how peers and proxies
announce capabilities. Older management servers that only send urls keep
working unchanged.
devcert build: relay generates an ECDSA P-256 cert with 13-day validity
(within the WebTransport serverCertificateHashes 14-day cap) and exposes
its SHA-256 so the WASM dialer can pin it.
Bumps quic-go v0.55.0 -> v0.59.0 (no API breaks for relay's importers)
and adds github.com/quic-go/webtransport-go v0.10.0.
23 lines
539 B
Go
23 lines
539 B
Go
//go:build !js
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// Package wt's WebTransport dialer is browser-only. This stub keeps the
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// package importable from non-WASM builds (for tooling, `go vet`, etc.) without
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// pulling in syscall/js. The Dialer here returns an error if used.
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package wt
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import (
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"context"
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"errors"
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"net"
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)
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const Network = "wt"
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type Dialer struct{}
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func (Dialer) Protocol() string { return Network }
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func (Dialer) Dial(_ context.Context, _, _ string) (net.Conn, error) {
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return nil, errors.New("WebTransport dialer is only available in WASM builds")
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}
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