Integrate BACKBEAT SDK and resolve KACHING license validation
Major integrations and fixes: - Added BACKBEAT SDK integration for P2P operation timing - Implemented beat-aware status tracking for distributed operations - Added Docker secrets support for secure license management - Resolved KACHING license validation via HTTPS/TLS - Updated docker-compose configuration for clean stack deployment - Disabled rollback policies to prevent deployment failures - Added license credential storage (CHORUS-DEV-MULTI-001) Technical improvements: - BACKBEAT P2P operation tracking with phase management - Enhanced configuration system with file-based secrets - Improved error handling for license validation - Clean separation of KACHING and CHORUS deployment stacks 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
anthonyrawlins
418
vendor/github.com/quic-go/webtransport-go/session.go
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vendored
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418
vendor/github.com/quic-go/webtransport-go/session.go
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@@ -0,0 +1,418 @@
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package webtransport
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import (
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"context"
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"encoding/binary"
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"errors"
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"io"
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"math/rand"
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"net"
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"sync"
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"github.com/quic-go/quic-go"
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"github.com/quic-go/quic-go/http3"
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"github.com/quic-go/quic-go/quicvarint"
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)
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// sessionID is the WebTransport Session ID
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type sessionID uint64
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const closeWebtransportSessionCapsuleType http3.CapsuleType = 0x2843
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type acceptQueue[T any] struct {
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mx sync.Mutex
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// The channel is used to notify consumers (via Chan) about new incoming items.
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// Needs to be buffered to preserve the notification if an item is enqueued
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// between a call to Next and to Chan.
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c chan struct{}
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// Contains all the streams waiting to be accepted.
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// There's no explicit limit to the length of the queue, but it is implicitly
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// limited by the stream flow control provided by QUIC.
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queue []T
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}
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func newAcceptQueue[T any]() *acceptQueue[T] {
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return &acceptQueue[T]{c: make(chan struct{}, 1)}
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}
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func (q *acceptQueue[T]) Add(str T) {
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q.mx.Lock()
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q.queue = append(q.queue, str)
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q.mx.Unlock()
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select {
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case q.c <- struct{}{}:
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default:
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}
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}
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func (q *acceptQueue[T]) Next() T {
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q.mx.Lock()
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defer q.mx.Unlock()
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if len(q.queue) == 0 {
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return *new(T)
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}
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str := q.queue[0]
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q.queue = q.queue[1:]
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return str
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}
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func (q *acceptQueue[T]) Chan() <-chan struct{} { return q.c }
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type Session struct {
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sessionID sessionID
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qconn http3.StreamCreator
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requestStr quic.Stream
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streamHdr []byte
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uniStreamHdr []byte
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ctx context.Context
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closeMx sync.Mutex
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closeErr error // not nil once the session is closed
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// streamCtxs holds all the context.CancelFuncs of calls to Open{Uni}StreamSync calls currently active.
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// When the session is closed, this allows us to cancel all these contexts and make those calls return.
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streamCtxs map[int]context.CancelFunc
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bidiAcceptQueue acceptQueue[Stream]
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uniAcceptQueue acceptQueue[ReceiveStream]
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// TODO: garbage collect streams from when they are closed
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streams streamsMap
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}
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func newSession(sessionID sessionID, qconn http3.StreamCreator, requestStr quic.Stream) *Session {
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tracingID := qconn.Context().Value(quic.ConnectionTracingKey).(uint64)
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ctx, ctxCancel := context.WithCancel(context.WithValue(context.Background(), quic.ConnectionTracingKey, tracingID))
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c := &Session{
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sessionID: sessionID,
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qconn: qconn,
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requestStr: requestStr,
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ctx: ctx,
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streamCtxs: make(map[int]context.CancelFunc),
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bidiAcceptQueue: *newAcceptQueue[Stream](),
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uniAcceptQueue: *newAcceptQueue[ReceiveStream](),
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streams: *newStreamsMap(),
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}
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// precompute the headers for unidirectional streams
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c.uniStreamHdr = make([]byte, 0, 2+quicvarint.Len(uint64(c.sessionID)))
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c.uniStreamHdr = quicvarint.Append(c.uniStreamHdr, webTransportUniStreamType)
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c.uniStreamHdr = quicvarint.Append(c.uniStreamHdr, uint64(c.sessionID))
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// precompute the headers for bidirectional streams
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c.streamHdr = make([]byte, 0, 2+quicvarint.Len(uint64(c.sessionID)))
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c.streamHdr = quicvarint.Append(c.streamHdr, webTransportFrameType)
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c.streamHdr = quicvarint.Append(c.streamHdr, uint64(c.sessionID))
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go func() {
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defer ctxCancel()
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c.handleConn()
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}()
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return c
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}
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func (s *Session) handleConn() {
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var closeErr *ConnectionError
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err := s.parseNextCapsule()
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if !errors.As(err, &closeErr) {
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closeErr = &ConnectionError{Remote: true}
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}
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s.closeMx.Lock()
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defer s.closeMx.Unlock()
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// If we closed the connection, the closeErr will be set in Close.
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if s.closeErr == nil {
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s.closeErr = closeErr
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}
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for _, cancel := range s.streamCtxs {
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cancel()
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}
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s.streams.CloseSession()
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}
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// parseNextCapsule parses the next Capsule sent on the request stream.
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// It returns a ConnectionError, if the capsule received is a CLOSE_WEBTRANSPORT_SESSION Capsule.
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func (s *Session) parseNextCapsule() error {
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for {
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// TODO: enforce max size
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typ, r, err := http3.ParseCapsule(quicvarint.NewReader(s.requestStr))
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if err != nil {
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return err
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}
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switch typ {
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case closeWebtransportSessionCapsuleType:
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b := make([]byte, 4)
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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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appErrCode := binary.BigEndian.Uint32(b)
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appErrMsg, err := io.ReadAll(r)
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if err != nil {
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return err
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}
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return &ConnectionError{
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Remote: true,
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ErrorCode: SessionErrorCode(appErrCode),
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Message: string(appErrMsg),
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}
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default:
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// unknown capsule, skip it
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if _, err := io.ReadAll(r); err != nil {
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return err
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}
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}
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}
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}
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func (s *Session) addStream(qstr quic.Stream, addStreamHeader bool) Stream {
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var hdr []byte
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if addStreamHeader {
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hdr = s.streamHdr
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}
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str := newStream(qstr, hdr, func() { s.streams.RemoveStream(qstr.StreamID()) })
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s.streams.AddStream(qstr.StreamID(), str.closeWithSession)
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return str
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}
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func (s *Session) addReceiveStream(qstr quic.ReceiveStream) ReceiveStream {
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str := newReceiveStream(qstr, func() { s.streams.RemoveStream(qstr.StreamID()) })
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s.streams.AddStream(qstr.StreamID(), func() {
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str.closeWithSession()
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})
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return str
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}
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func (s *Session) addSendStream(qstr quic.SendStream) SendStream {
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str := newSendStream(qstr, s.uniStreamHdr, func() { s.streams.RemoveStream(qstr.StreamID()) })
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s.streams.AddStream(qstr.StreamID(), str.closeWithSession)
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return str
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}
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// addIncomingStream adds a bidirectional stream that the remote peer opened
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func (s *Session) addIncomingStream(qstr quic.Stream) {
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s.closeMx.Lock()
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closeErr := s.closeErr
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if closeErr != nil {
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s.closeMx.Unlock()
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qstr.CancelRead(sessionCloseErrorCode)
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qstr.CancelWrite(sessionCloseErrorCode)
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return
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}
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str := s.addStream(qstr, false)
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s.closeMx.Unlock()
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s.bidiAcceptQueue.Add(str)
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}
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// addIncomingUniStream adds a unidirectional stream that the remote peer opened
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func (s *Session) addIncomingUniStream(qstr quic.ReceiveStream) {
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s.closeMx.Lock()
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closeErr := s.closeErr
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if closeErr != nil {
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s.closeMx.Unlock()
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qstr.CancelRead(sessionCloseErrorCode)
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return
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}
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str := s.addReceiveStream(qstr)
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s.closeMx.Unlock()
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s.uniAcceptQueue.Add(str)
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}
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// Context returns a context that is closed when the session is closed.
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func (s *Session) Context() context.Context {
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return s.ctx
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}
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func (s *Session) AcceptStream(ctx context.Context) (Stream, error) {
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s.closeMx.Lock()
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closeErr := s.closeErr
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s.closeMx.Unlock()
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if closeErr != nil {
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return nil, closeErr
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}
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for {
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// If there's a stream in the accept queue, return it immediately.
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if str := s.bidiAcceptQueue.Next(); str != nil {
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return str, nil
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}
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// No stream in the accept queue. Wait until we accept one.
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select {
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case <-s.ctx.Done():
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return nil, s.closeErr
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case <-ctx.Done():
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return nil, ctx.Err()
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case <-s.bidiAcceptQueue.Chan():
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}
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}
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}
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func (s *Session) AcceptUniStream(ctx context.Context) (ReceiveStream, error) {
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s.closeMx.Lock()
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closeErr := s.closeErr
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s.closeMx.Unlock()
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if closeErr != nil {
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return nil, s.closeErr
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}
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for {
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// If there's a stream in the accept queue, return it immediately.
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if str := s.uniAcceptQueue.Next(); str != nil {
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return str, nil
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}
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// No stream in the accept queue. Wait until we accept one.
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select {
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case <-s.ctx.Done():
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return nil, s.closeErr
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case <-ctx.Done():
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return nil, ctx.Err()
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case <-s.uniAcceptQueue.Chan():
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}
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}
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}
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func (s *Session) OpenStream() (Stream, error) {
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s.closeMx.Lock()
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defer s.closeMx.Unlock()
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if s.closeErr != nil {
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return nil, s.closeErr
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}
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qstr, err := s.qconn.OpenStream()
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if err != nil {
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return nil, err
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}
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return s.addStream(qstr, true), nil
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}
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func (s *Session) addStreamCtxCancel(cancel context.CancelFunc) (id int) {
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rand:
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id = rand.Int()
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if _, ok := s.streamCtxs[id]; ok {
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goto rand
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}
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s.streamCtxs[id] = cancel
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return id
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}
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func (s *Session) OpenStreamSync(ctx context.Context) (Stream, error) {
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s.closeMx.Lock()
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if s.closeErr != nil {
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s.closeMx.Unlock()
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return nil, s.closeErr
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}
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ctx, cancel := context.WithCancel(ctx)
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id := s.addStreamCtxCancel(cancel)
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s.closeMx.Unlock()
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qstr, err := s.qconn.OpenStreamSync(ctx)
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if err != nil {
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if s.closeErr != nil {
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return nil, s.closeErr
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}
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return nil, err
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}
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s.closeMx.Lock()
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defer s.closeMx.Unlock()
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delete(s.streamCtxs, id)
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// Some time might have passed. Check if the session is still alive
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if s.closeErr != nil {
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qstr.CancelWrite(sessionCloseErrorCode)
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qstr.CancelRead(sessionCloseErrorCode)
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return nil, s.closeErr
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}
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return s.addStream(qstr, true), nil
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}
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func (s *Session) OpenUniStream() (SendStream, error) {
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s.closeMx.Lock()
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defer s.closeMx.Unlock()
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if s.closeErr != nil {
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return nil, s.closeErr
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}
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qstr, err := s.qconn.OpenUniStream()
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if err != nil {
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return nil, err
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}
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return s.addSendStream(qstr), nil
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}
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func (s *Session) OpenUniStreamSync(ctx context.Context) (str SendStream, err error) {
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s.closeMx.Lock()
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if s.closeErr != nil {
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s.closeMx.Unlock()
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return nil, s.closeErr
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}
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ctx, cancel := context.WithCancel(ctx)
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id := s.addStreamCtxCancel(cancel)
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s.closeMx.Unlock()
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qstr, err := s.qconn.OpenUniStreamSync(ctx)
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if err != nil {
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if s.closeErr != nil {
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return nil, s.closeErr
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}
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return nil, err
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}
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s.closeMx.Lock()
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defer s.closeMx.Unlock()
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delete(s.streamCtxs, id)
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// Some time might have passed. Check if the session is still alive
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if s.closeErr != nil {
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qstr.CancelWrite(sessionCloseErrorCode)
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return nil, s.closeErr
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}
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return s.addSendStream(qstr), nil
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}
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func (s *Session) LocalAddr() net.Addr {
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return s.qconn.LocalAddr()
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}
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func (s *Session) RemoteAddr() net.Addr {
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return s.qconn.RemoteAddr()
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}
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func (s *Session) CloseWithError(code SessionErrorCode, msg string) error {
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first, err := s.closeWithError(code, msg)
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if err != nil || !first {
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return err
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}
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s.requestStr.CancelRead(1337)
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err = s.requestStr.Close()
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<-s.ctx.Done()
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return err
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}
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func (s *Session) closeWithError(code SessionErrorCode, msg string) (bool /* first call to close session */, error) {
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s.closeMx.Lock()
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defer s.closeMx.Unlock()
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// Duplicate call, or the remote already closed this session.
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if s.closeErr != nil {
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return false, nil
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}
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s.closeErr = &ConnectionError{
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ErrorCode: code,
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Message: msg,
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}
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b := make([]byte, 4, 4+len(msg))
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binary.BigEndian.PutUint32(b, uint32(code))
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b = append(b, []byte(msg)...)
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return true, http3.WriteCapsule(
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quicvarint.NewWriter(s.requestStr),
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closeWebtransportSessionCapsuleType,
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b,
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)
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}
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func (c *Session) ConnectionState() quic.ConnectionState {
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return c.qconn.ConnectionState()
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}
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Reference in New Issue
Block a user