diff options
Diffstat (limited to 'vendor/golang.org/x/net')
-rw-r--r-- | vendor/golang.org/x/net/http2/transport.go | 66 |
1 files changed, 61 insertions, 5 deletions
diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go index 54acc1e36..76a92e0ca 100644 --- a/vendor/golang.org/x/net/http2/transport.go +++ b/vendor/golang.org/x/net/http2/transport.go @@ -108,6 +108,19 @@ type Transport struct { // waiting for their turn. StrictMaxConcurrentStreams bool + // 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 + // there is no other traffic on the connection, the health check will + // be performed every ReadIdleTimeout interval. + // If zero, no health check is performed. + ReadIdleTimeout time.Duration + + // PingTimeout is the timeout after which the connection will be closed + // if a response to Ping is not received. + // Defaults to 15s. + PingTimeout time.Duration + // t1, if non-nil, is the standard library Transport using // this transport. Its settings are used (but not its // RoundTrip method, etc). @@ -131,6 +144,14 @@ func (t *Transport) disableCompression() bool { return t.DisableCompression || (t.t1 != nil && t.t1.DisableCompression) } +func (t *Transport) pingTimeout() time.Duration { + if t.PingTimeout == 0 { + return 15 * time.Second + } + return t.PingTimeout + +} + // ConfigureTransport configures a net/http HTTP/1 Transport to use HTTP/2. // It returns an error if t1 has already been HTTP/2-enabled. func ConfigureTransport(t1 *http.Transport) error { @@ -675,6 +696,20 @@ func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, erro return cc, nil } +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) + defer cancel() + err := cc.Ping(ctx) + if err != nil { + cc.closeForLostPing() + cc.t.connPool().MarkDead(cc) + return + } +} + func (cc *ClientConn) setGoAway(f *GoAwayFrame) { cc.mu.Lock() defer cc.mu.Unlock() @@ -846,14 +881,12 @@ func (cc *ClientConn) sendGoAway() error { return nil } -// Close closes the client connection immediately. -// -// In-flight requests are interrupted. For a graceful shutdown, use Shutdown instead. -func (cc *ClientConn) Close() error { +// closes the client connection immediately. In-flight requests are interrupted. +// err is sent to streams. +func (cc *ClientConn) closeForError(err error) error { cc.mu.Lock() defer cc.cond.Broadcast() defer cc.mu.Unlock() - err := errors.New("http2: client connection force closed via ClientConn.Close") for id, cs := range cc.streams { select { case cs.resc <- resAndError{err: err}: @@ -866,6 +899,20 @@ func (cc *ClientConn) Close() error { return cc.tconn.Close() } +// Close closes the client connection immediately. +// +// In-flight requests are interrupted. For a graceful shutdown, use Shutdown instead. +func (cc *ClientConn) Close() error { + err := errors.New("http2: client connection force closed via ClientConn.Close") + return cc.closeForError(err) +} + +// closes the client connection immediately. In-flight requests are interrupted. +func (cc *ClientConn) closeForLostPing() error { + err := errors.New("http2: client connection lost") + return cc.closeForError(err) +} + const maxAllocFrameSize = 512 << 10 // frameBuffer returns a scratch buffer suitable for writing DATA frames. @@ -1737,8 +1784,17 @@ func (rl *clientConnReadLoop) run() error { rl.closeWhenIdle = cc.t.disableKeepAlives() || cc.singleUse gotReply := false // ever saw a HEADERS reply gotSettings := false + readIdleTimeout := cc.t.ReadIdleTimeout + var t *time.Timer + if readIdleTimeout != 0 { + t = time.AfterFunc(readIdleTimeout, cc.healthCheck) + defer t.Stop() + } for { f, err := cc.fr.ReadFrame() + if t != nil { + t.Reset(readIdleTimeout) + } if err != nil { cc.vlogf("http2: Transport readFrame error on conn %p: (%T) %v", cc, err, err) } |