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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.
21 lines
729 B
Go
21 lines
729 B
Go
//go:build js
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package client
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import (
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"github.com/netbirdio/netbird/shared/relay/client/dialer"
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"github.com/netbirdio/netbird/shared/relay/client/dialer/ws"
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"github.com/netbirdio/netbird/shared/relay/client/dialer/wt"
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)
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// getDialers returns the dialers used by the WASM/browser relay client.
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//
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// WebTransport is tried alongside WebSocket via the race dialer: whichever
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// handshake completes first wins. WT loses fast against a relay that doesn't
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// speak h3 (TLS no_application_protocol within one RTT), so the fallback to
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// WS is cheap. The WASM client never uses raw QUIC — browsers don't expose
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// UDP sockets.
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func (c *Client) getDialers() []dialer.DialeFn {
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return []dialer.DialeFn{wt.Dialer{}, ws.Dialer{}}
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}
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