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path: root/vendor/golang.org/x/net/http2/transport.go
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Diffstat (limited to 'vendor/golang.org/x/net/http2/transport.go')
-rw-r--r--vendor/golang.org/x/net/http2/transport.go298
1 files changed, 237 insertions, 61 deletions
diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go
index c2a5b44b3..ce375c8c7 100644
--- a/vendor/golang.org/x/net/http2/transport.go
+++ b/vendor/golang.org/x/net/http2/transport.go
@@ -147,6 +147,12 @@ type Transport struct {
// waiting for their turn.
StrictMaxConcurrentStreams bool
+ // IdleConnTimeout is the maximum amount of time an idle
+ // (keep-alive) connection will remain idle before closing
+ // itself.
+ // Zero means no limit.
+ IdleConnTimeout time.Duration
+
// ReadIdleTimeout is the timeout after which a health check using ping
// frame will be carried out if no frame is received on the connection.
// Note that a ping response will is considered a received frame, so if
@@ -178,6 +184,8 @@ type Transport struct {
connPoolOnce sync.Once
connPoolOrDef ClientConnPool // non-nil version of ConnPool
+
+ syncHooks *testSyncHooks
}
func (t *Transport) maxHeaderListSize() uint32 {
@@ -302,7 +310,7 @@ type ClientConn struct {
readerErr error // set before readerDone is closed
idleTimeout time.Duration // or 0 for never
- idleTimer *time.Timer
+ idleTimer timer
mu sync.Mutex // guards following
cond *sync.Cond // hold mu; broadcast on flow/closed changes
@@ -344,6 +352,60 @@ type ClientConn struct {
werr error // first write error that has occurred
hbuf bytes.Buffer // HPACK encoder writes into this
henc *hpack.Encoder
+
+ syncHooks *testSyncHooks // can be nil
+}
+
+// Hook points used for testing.
+// Outside of tests, cc.syncHooks is nil and these all have minimal implementations.
+// Inside tests, see the testSyncHooks function docs.
+
+// goRun starts a new goroutine.
+func (cc *ClientConn) goRun(f func()) {
+ if cc.syncHooks != nil {
+ cc.syncHooks.goRun(f)
+ return
+ }
+ go f()
+}
+
+// condBroadcast is cc.cond.Broadcast.
+func (cc *ClientConn) condBroadcast() {
+ if cc.syncHooks != nil {
+ cc.syncHooks.condBroadcast(cc.cond)
+ }
+ cc.cond.Broadcast()
+}
+
+// condWait is cc.cond.Wait.
+func (cc *ClientConn) condWait() {
+ if cc.syncHooks != nil {
+ cc.syncHooks.condWait(cc.cond)
+ }
+ cc.cond.Wait()
+}
+
+// newTimer creates a new time.Timer, or a synthetic timer in tests.
+func (cc *ClientConn) newTimer(d time.Duration) timer {
+ if cc.syncHooks != nil {
+ return cc.syncHooks.newTimer(d)
+ }
+ return newTimeTimer(d)
+}
+
+// afterFunc creates a new time.AfterFunc timer, or a synthetic timer in tests.
+func (cc *ClientConn) afterFunc(d time.Duration, f func()) timer {
+ if cc.syncHooks != nil {
+ return cc.syncHooks.afterFunc(d, f)
+ }
+ return newTimeAfterFunc(d, f)
+}
+
+func (cc *ClientConn) contextWithTimeout(ctx context.Context, d time.Duration) (context.Context, context.CancelFunc) {
+ if cc.syncHooks != nil {
+ return cc.syncHooks.contextWithTimeout(ctx, d)
+ }
+ return context.WithTimeout(ctx, d)
}
// clientStream is the state for a single HTTP/2 stream. One of these
@@ -425,7 +487,7 @@ func (cs *clientStream) abortStreamLocked(err error) {
// TODO(dneil): Clean up tests where cs.cc.cond is nil.
if cs.cc.cond != nil {
// Wake up writeRequestBody if it is waiting on flow control.
- cs.cc.cond.Broadcast()
+ cs.cc.condBroadcast()
}
}
@@ -435,7 +497,7 @@ func (cs *clientStream) abortRequestBodyWrite() {
defer cc.mu.Unlock()
if cs.reqBody != nil && cs.reqBodyClosed == nil {
cs.closeReqBodyLocked()
- cc.cond.Broadcast()
+ cc.condBroadcast()
}
}
@@ -445,10 +507,10 @@ func (cs *clientStream) closeReqBodyLocked() {
}
cs.reqBodyClosed = make(chan struct{})
reqBodyClosed := cs.reqBodyClosed
- go func() {
+ cs.cc.goRun(func() {
cs.reqBody.Close()
close(reqBodyClosed)
- }()
+ })
}
type stickyErrWriter struct {
@@ -537,15 +599,6 @@ func authorityAddr(scheme string, authority string) (addr string) {
return net.JoinHostPort(host, port)
}
-var retryBackoffHook func(time.Duration) *time.Timer
-
-func backoffNewTimer(d time.Duration) *time.Timer {
- if retryBackoffHook != nil {
- return retryBackoffHook(d)
- }
- return time.NewTimer(d)
-}
-
// RoundTripOpt is like RoundTrip, but takes options.
func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Response, error) {
if !(req.URL.Scheme == "https" || (req.URL.Scheme == "http" && t.AllowHTTP)) {
@@ -573,13 +626,27 @@ func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Res
backoff := float64(uint(1) << (uint(retry) - 1))
backoff += backoff * (0.1 * mathrand.Float64())
d := time.Second * time.Duration(backoff)
- timer := backoffNewTimer(d)
+ var tm timer
+ if t.syncHooks != nil {
+ tm = t.syncHooks.newTimer(d)
+ t.syncHooks.blockUntil(func() bool {
+ select {
+ case <-tm.C():
+ case <-req.Context().Done():
+ default:
+ return false
+ }
+ return true
+ })
+ } else {
+ tm = newTimeTimer(d)
+ }
select {
- case <-timer.C:
+ case <-tm.C():
t.vlogf("RoundTrip retrying after failure: %v", roundTripErr)
continue
case <-req.Context().Done():
- timer.Stop()
+ tm.Stop()
err = req.Context().Err()
}
}
@@ -658,6 +725,9 @@ func canRetryError(err error) bool {
}
func (t *Transport) dialClientConn(ctx context.Context, addr string, singleUse bool) (*ClientConn, error) {
+ if t.syncHooks != nil {
+ return t.newClientConn(nil, singleUse, t.syncHooks)
+ }
host, _, err := net.SplitHostPort(addr)
if err != nil {
return nil, err
@@ -666,7 +736,7 @@ func (t *Transport) dialClientConn(ctx context.Context, addr string, singleUse b
if err != nil {
return nil, err
}
- return t.newClientConn(tconn, singleUse)
+ return t.newClientConn(tconn, singleUse, nil)
}
func (t *Transport) newTLSConfig(host string) *tls.Config {
@@ -732,10 +802,10 @@ func (t *Transport) maxEncoderHeaderTableSize() uint32 {
}
func (t *Transport) NewClientConn(c net.Conn) (*ClientConn, error) {
- return t.newClientConn(c, t.disableKeepAlives())
+ return t.newClientConn(c, t.disableKeepAlives(), nil)
}
-func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, error) {
+func (t *Transport) newClientConn(c net.Conn, singleUse bool, hooks *testSyncHooks) (*ClientConn, error) {
cc := &ClientConn{
t: t,
tconn: c,
@@ -750,10 +820,15 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro
wantSettingsAck: true,
pings: make(map[[8]byte]chan struct{}),
reqHeaderMu: make(chan struct{}, 1),
+ syncHooks: hooks,
+ }
+ if hooks != nil {
+ hooks.newclientconn(cc)
+ c = cc.tconn
}
if d := t.idleConnTimeout(); d != 0 {
cc.idleTimeout = d
- cc.idleTimer = time.AfterFunc(d, cc.onIdleTimeout)
+ cc.idleTimer = cc.afterFunc(d, cc.onIdleTimeout)
}
if VerboseLogs {
t.vlogf("http2: Transport creating client conn %p to %v", cc, c.RemoteAddr())
@@ -818,7 +893,7 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro
return nil, cc.werr
}
- go cc.readLoop()
+ cc.goRun(cc.readLoop)
return cc, nil
}
@@ -826,7 +901,7 @@ func (cc *ClientConn) healthCheck() {
pingTimeout := cc.t.pingTimeout()
// We don't need to periodically ping in the health check, because the readLoop of ClientConn will
// trigger the healthCheck again if there is no frame received.
- ctx, cancel := context.WithTimeout(context.Background(), pingTimeout)
+ ctx, cancel := cc.contextWithTimeout(context.Background(), pingTimeout)
defer cancel()
cc.vlogf("http2: Transport sending health check")
err := cc.Ping(ctx)
@@ -1056,7 +1131,7 @@ func (cc *ClientConn) Shutdown(ctx context.Context) error {
// Wait for all in-flight streams to complete or connection to close
done := make(chan struct{})
cancelled := false // guarded by cc.mu
- go func() {
+ cc.goRun(func() {
cc.mu.Lock()
defer cc.mu.Unlock()
for {
@@ -1068,9 +1143,9 @@ func (cc *ClientConn) Shutdown(ctx context.Context) error {
if cancelled {
break
}
- cc.cond.Wait()
+ cc.condWait()
}
- }()
+ })
shutdownEnterWaitStateHook()
select {
case <-done:
@@ -1080,7 +1155,7 @@ func (cc *ClientConn) Shutdown(ctx context.Context) error {
cc.mu.Lock()
// Free the goroutine above
cancelled = true
- cc.cond.Broadcast()
+ cc.condBroadcast()
cc.mu.Unlock()
return ctx.Err()
}
@@ -1118,7 +1193,7 @@ func (cc *ClientConn) closeForError(err error) {
for _, cs := range cc.streams {
cs.abortStreamLocked(err)
}
- cc.cond.Broadcast()
+ cc.condBroadcast()
cc.mu.Unlock()
cc.closeConn()
}
@@ -1215,6 +1290,10 @@ func (cc *ClientConn) decrStreamReservationsLocked() {
}
func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
+ return cc.roundTrip(req, nil)
+}
+
+func (cc *ClientConn) roundTrip(req *http.Request, streamf func(*clientStream)) (*http.Response, error) {
ctx := req.Context()
cs := &clientStream{
cc: cc,
@@ -1229,9 +1308,23 @@ func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
respHeaderRecv: make(chan struct{}),
donec: make(chan struct{}),
}
- go cs.doRequest(req)
+ cc.goRun(func() {
+ cs.doRequest(req)
+ })
waitDone := func() error {
+ if cc.syncHooks != nil {
+ cc.syncHooks.blockUntil(func() bool {
+ select {
+ case <-cs.donec:
+ case <-ctx.Done():
+ case <-cs.reqCancel:
+ default:
+ return false
+ }
+ return true
+ })
+ }
select {
case <-cs.donec:
return nil
@@ -1292,7 +1385,24 @@ func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
return err
}
+ if streamf != nil {
+ streamf(cs)
+ }
+
for {
+ if cc.syncHooks != nil {
+ cc.syncHooks.blockUntil(func() bool {
+ select {
+ case <-cs.respHeaderRecv:
+ case <-cs.abort:
+ case <-ctx.Done():
+ case <-cs.reqCancel:
+ default:
+ return false
+ }
+ return true
+ })
+ }
select {
case <-cs.respHeaderRecv:
return handleResponseHeaders()
@@ -1348,6 +1458,21 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
if cc.reqHeaderMu == nil {
panic("RoundTrip on uninitialized ClientConn") // for tests
}
+ var newStreamHook func(*clientStream)
+ if cc.syncHooks != nil {
+ newStreamHook = cc.syncHooks.newstream
+ cc.syncHooks.blockUntil(func() bool {
+ select {
+ case cc.reqHeaderMu <- struct{}{}:
+ <-cc.reqHeaderMu
+ case <-cs.reqCancel:
+ case <-ctx.Done():
+ default:
+ return false
+ }
+ return true
+ })
+ }
select {
case cc.reqHeaderMu <- struct{}{}:
case <-cs.reqCancel:
@@ -1372,6 +1497,10 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
}
cc.mu.Unlock()
+ if newStreamHook != nil {
+ newStreamHook(cs)
+ }
+
// TODO(bradfitz): this is a copy of the logic in net/http. Unify somewhere?
if !cc.t.disableCompression() &&
req.Header.Get("Accept-Encoding") == "" &&
@@ -1452,15 +1581,30 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
var respHeaderTimer <-chan time.Time
var respHeaderRecv chan struct{}
if d := cc.responseHeaderTimeout(); d != 0 {
- timer := time.NewTimer(d)
+ timer := cc.newTimer(d)
defer timer.Stop()
- respHeaderTimer = timer.C
+ respHeaderTimer = timer.C()
respHeaderRecv = cs.respHeaderRecv
}
// Wait until the peer half-closes its end of the stream,
// or until the request is aborted (via context, error, or otherwise),
// whichever comes first.
for {
+ if cc.syncHooks != nil {
+ cc.syncHooks.blockUntil(func() bool {
+ select {
+ case <-cs.peerClosed:
+ case <-respHeaderTimer:
+ case <-respHeaderRecv:
+ case <-cs.abort:
+ case <-ctx.Done():
+ case <-cs.reqCancel:
+ default:
+ return false
+ }
+ return true
+ })
+ }
select {
case <-cs.peerClosed:
return nil
@@ -1609,7 +1753,7 @@ func (cc *ClientConn) awaitOpenSlotForStreamLocked(cs *clientStream) error {
return nil
}
cc.pendingRequests++
- cc.cond.Wait()
+ cc.condWait()
cc.pendingRequests--
select {
case <-cs.abort:
@@ -1871,8 +2015,24 @@ func (cs *clientStream) awaitFlowControl(maxBytes int) (taken int32, err error)
cs.flow.take(take)
return take, nil
}
- cc.cond.Wait()
+ cc.condWait()
+ }
+}
+
+func validateHeaders(hdrs http.Header) string {
+ for k, vv := range hdrs {
+ if !httpguts.ValidHeaderFieldName(k) {
+ return fmt.Sprintf("name %q", k)
+ }
+ for _, v := range vv {
+ if !httpguts.ValidHeaderFieldValue(v) {
+ // Don't include the value in the error,
+ // because it may be sensitive.
+ return fmt.Sprintf("value for header %q", k)
+ }
+ }
}
+ return ""
}
var errNilRequestURL = errors.New("http2: Request.URI is nil")
@@ -1912,19 +2072,14 @@ func (cc *ClientConn) encodeHeaders(req *http.Request, addGzipHeader bool, trail
}
}
- // Check for any invalid headers and return an error before we
+ // Check for any invalid headers+trailers and return an error before we
// potentially pollute our hpack state. (We want to be able to
// continue to reuse the hpack encoder for future requests)
- for k, vv := range req.Header {
- if !httpguts.ValidHeaderFieldName(k) {
- return nil, fmt.Errorf("invalid HTTP header name %q", k)
- }
- for _, v := range vv {
- if !httpguts.ValidHeaderFieldValue(v) {
- // Don't include the value in the error, because it may be sensitive.
- return nil, fmt.Errorf("invalid HTTP header value for header %q", k)
- }
- }
+ if err := validateHeaders(req.Header); err != "" {
+ return nil, fmt.Errorf("invalid HTTP header %s", err)
+ }
+ if err := validateHeaders(req.Trailer); err != "" {
+ return nil, fmt.Errorf("invalid HTTP trailer %s", err)
}
enumerateHeaders := func(f func(name, value string)) {
@@ -2143,7 +2298,7 @@ func (cc *ClientConn) forgetStreamID(id uint32) {
}
// Wake up writeRequestBody via clientStream.awaitFlowControl and
// wake up RoundTrip if there is a pending request.
- cc.cond.Broadcast()
+ cc.condBroadcast()
closeOnIdle := cc.singleUse || cc.doNotReuse || cc.t.disableKeepAlives() || cc.goAway != nil
if closeOnIdle && cc.streamsReserved == 0 && len(cc.streams) == 0 {
@@ -2231,7 +2386,7 @@ func (rl *clientConnReadLoop) cleanup() {
cs.abortStreamLocked(err)
}
}
- cc.cond.Broadcast()
+ cc.condBroadcast()
cc.mu.Unlock()
}
@@ -2266,10 +2421,9 @@ func (rl *clientConnReadLoop) run() error {
cc := rl.cc
gotSettings := false
readIdleTimeout := cc.t.ReadIdleTimeout
- var t *time.Timer
+ var t timer
if readIdleTimeout != 0 {
- t = time.AfterFunc(readIdleTimeout, cc.healthCheck)
- defer t.Stop()
+ t = cc.afterFunc(readIdleTimeout, cc.healthCheck)
}
for {
f, err := cc.fr.ReadFrame()
@@ -2684,7 +2838,7 @@ func (rl *clientConnReadLoop) processData(f *DataFrame) error {
})
return nil
}
- if !cs.firstByte {
+ if !cs.pastHeaders {
cc.logf("protocol error: received DATA before a HEADERS frame")
rl.endStreamError(cs, StreamError{
StreamID: f.StreamID,
@@ -2867,7 +3021,7 @@ func (rl *clientConnReadLoop) processSettingsNoWrite(f *SettingsFrame) error {
for _, cs := range cc.streams {
cs.flow.add(delta)
}
- cc.cond.Broadcast()
+ cc.condBroadcast()
cc.initialWindowSize = s.Val
case SettingHeaderTableSize:
@@ -2922,7 +3076,7 @@ func (rl *clientConnReadLoop) processWindowUpdate(f *WindowUpdateFrame) error {
return ConnectionError(ErrCodeFlowControl)
}
- cc.cond.Broadcast()
+ cc.condBroadcast()
return nil
}
@@ -2964,24 +3118,38 @@ func (cc *ClientConn) Ping(ctx context.Context) error {
}
cc.mu.Unlock()
}
- errc := make(chan error, 1)
- go func() {
+ var pingError error
+ errc := make(chan struct{})
+ cc.goRun(func() {
cc.wmu.Lock()
defer cc.wmu.Unlock()
- if err := cc.fr.WritePing(false, p); err != nil {
- errc <- err
+ if pingError = cc.fr.WritePing(false, p); pingError != nil {
+ close(errc)
return
}
- if err := cc.bw.Flush(); err != nil {
- errc <- err
+ if pingError = cc.bw.Flush(); pingError != nil {
+ close(errc)
return
}
- }()
+ })
+ if cc.syncHooks != nil {
+ cc.syncHooks.blockUntil(func() bool {
+ select {
+ case <-c:
+ case <-errc:
+ case <-ctx.Done():
+ case <-cc.readerDone:
+ default:
+ return false
+ }
+ return true
+ })
+ }
select {
case <-c:
return nil
- case err := <-errc:
- return err
+ case <-errc:
+ return pingError
case <-ctx.Done():
return ctx.Err()
case <-cc.readerDone:
@@ -3150,9 +3318,17 @@ func (rt noDialH2RoundTripper) RoundTrip(req *http.Request) (*http.Response, err
}
func (t *Transport) idleConnTimeout() time.Duration {
+ // to keep things backwards compatible, we use non-zero values of
+ // IdleConnTimeout, followed by using the IdleConnTimeout on the underlying
+ // http1 transport, followed by 0
+ if t.IdleConnTimeout != 0 {
+ return t.IdleConnTimeout
+ }
+
if t.t1 != nil {
return t.t1.IdleConnTimeout
}
+
return 0
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-04 05:14:58 +0000