StartWebTransport built the node's only HTTP/3 listener from inside AgentService:
it minted the TLS config, bound the UDP socket, assembled an h3 mux and returned
a stop closure LivekitServer held in agentWTStop. Every other listener is
constructed in NewLivekitServer and delegates to a service, and agents are the
first consumer of HTTP/3 rather than the last.
webtransport.go now carries the transport with no agent references:
WebTransportTLS, NewWebTransportServer, NewWebTransportHandler,
ListenWebTransport, and WithWebTransportServer/GetWebTransportServer, which put
the serving server in the request context so a route that upgrades is a
conventional http.Handler instead of a closure over the server. The listener is
built in NewLivekitServer beside the prometheus and debug servers, bound in Start
with the other listeners, and stopped once doneChan unblocks, so no stop closure
is held on LivekitServer. /agent is a route on its mux, as it is on the API mux.
UpgradeWebTransport unwraps the ResponseWriter before upgrading. webtransport-go
type-asserts it to http3.Settingser and http3.HTTPStreamer without checking and
negroni wraps the writer on every chain, so the h3 listener could not carry a
middleware chain at all. It now runs the same recovery, api-key auth and path
normalization as the TCP chain.
AgentService splits into AgentWSService and AgentWTService over the shared
AgentHandler, and the endpoint front becomes AgentEndpointService. wire builds
all four and threads one endpoint.Registry into the handler and the front.
NewAgentHandler takes the config and builds its own ServerInfo, so endpointsConfig
and singleAPIKey are set at construction and the psrpc server is registered
against a fully formed handler; it previously bound one whose embedded
*AgentHandler was still nil.
The listener's port and certificate move to a top-level webtransport config
block. The listener no longer reads agents.endpoints.disabled, which continues to
refuse endpoint registrations. ListenWebTransport binds one socket per bind
address, where the h3 listener ignored bind_addresses that every TCP listener
honoured.
NewWorkerRegisterer takes a variadic WorkerRegisterHandler, each handler reading
the request and filling its part of the response and the registration, replacing
the single EndpointSettingsFunc threaded through HandleRegister.
EndpointRegisterHandler is the endpoint declaration's turn, and
endpoint.NegotiateSettings holds the protocol negotiation the OSS and cloud
handshakes each carried a copy of.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
