mirror of
https://github.com/livekit/livekit.git
synced 2026-09-13 15:35:55 +00:00
Théo Monnom
751d85c9bf
Replace the capsule mux / credit / attach-pool machinery with one WebTransport (QUIC) session per worker: a control stream carries registration and status, and each HTTP exchange rides its own QUIC stream (native mux, per-stream flow control, half-close, and reset). Encode the HTTP method into the cross-node route filter so candidate selection is method-aware. Keep the legacy WebSocket control transport for backward compatibility.
65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
// Copyright 2026 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package endpoint
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import (
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"encoding/binary"
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"fmt"
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"io"
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"google.golang.org/protobuf/proto"
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)
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// MaxControlMessageSize bounds one framed control message so a malformed length
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// prefix cannot make the reader allocate without bound.
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const MaxControlMessageSize = 1 << 20
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// WriteControlMessage writes a length-delimited protobuf on the control stream:
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// a 4-byte big-endian length followed by the marshaled message. The control
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// stream carries the same WorkerMessage/ServerMessage exchange the WebSocket
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// control connection used; only the framing (QUIC stream instead of WS message)
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// differs.
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func WriteControlMessage(w io.Writer, m proto.Message) error {
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b, err := proto.Marshal(m)
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if err != nil {
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return err
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}
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var hdr [4]byte
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binary.BigEndian.PutUint32(hdr[:], uint32(len(b)))
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if _, err := w.Write(hdr[:]); err != nil {
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return err
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}
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_, err = w.Write(b)
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return err
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}
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// ReadControlMessage reads one length-delimited protobuf written by
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// WriteControlMessage into m.
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func ReadControlMessage(r io.Reader, m proto.Message) error {
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var hdr [4]byte
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if _, err := io.ReadFull(r, hdr[:]); err != nil {
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return err
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}
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n := binary.BigEndian.Uint32(hdr[:])
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if n > MaxControlMessageSize {
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return fmt.Errorf("control message too large: %d bytes", n)
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}
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b := make([]byte, n)
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if _, err := io.ReadFull(r, b); err != nil {
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return err
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}
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return proto.Unmarshal(b, m)
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}
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