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Update libkv dependency

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This commit is contained in:
NicoMen 2017-11-17 17:22:03 +01:00 • committed by Traefiker
parent cdab6b1796
commit 66e489addb
237 changed files with 62817 additions and 16116 deletions
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229
vendor/golang.org/x/net/http2/server.go generated vendored
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@ -110,11 +110,38 @@ type Server struct {
// activity for the purposes of IdleTimeout.
IdleTimeout time.Duration
// MaxUploadBufferPerConnection is the size of the initial flow
// control window for each connections. The HTTP/2 spec does not
// allow this to be smaller than 65535 or larger than 2^32-1.
// If the value is outside this range, a default value will be
// used instead.
MaxUploadBufferPerConnection int32
// MaxUploadBufferPerStream is the size of the initial flow control
// window for each stream. The HTTP/2 spec does not allow this to
// be larger than 2^32-1. If the value is zero or larger than the
// maximum, a default value will be used instead.
MaxUploadBufferPerStream int32
// NewWriteScheduler constructs a write scheduler for a connection.
// If nil, a default scheduler is chosen.
NewWriteScheduler func() WriteScheduler
}
func (s *Server) initialConnRecvWindowSize() int32 {
if s.MaxUploadBufferPerConnection > initialWindowSize {
return s.MaxUploadBufferPerConnection
}
return 1 << 20
}
func (s *Server) initialStreamRecvWindowSize() int32 {
if s.MaxUploadBufferPerStream > 0 {
return s.MaxUploadBufferPerStream
}
return 1 << 20
}
func (s *Server) maxReadFrameSize() uint32 {
if v := s.MaxReadFrameSize; v >= minMaxFrameSize && v <= maxFrameSize {
return v
@ -255,35 +282,34 @@ func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
defer cancel()
sc := &serverConn{
srv: s,
hs: opts.baseConfig(),
conn: c,
baseCtx: baseCtx,
remoteAddrStr: c.RemoteAddr().String(),
bw: newBufferedWriter(c),
handler: opts.handler(),
streams: make(map[uint32]*stream),
readFrameCh: make(chan readFrameResult),
wantWriteFrameCh: make(chan FrameWriteRequest, 8),
wantStartPushCh: make(chan startPushRequest, 8),
wroteFrameCh: make(chan frameWriteResult, 1), // buffered; one send in writeFrameAsync
bodyReadCh: make(chan bodyReadMsg), // buffering doesn't matter either way
doneServing: make(chan struct{}),
clientMaxStreams: math.MaxUint32, // Section 6.5.2: "Initially, there is no limit to this value"
advMaxStreams: s.maxConcurrentStreams(),
initialWindowSize: initialWindowSize,
maxFrameSize: initialMaxFrameSize,
headerTableSize: initialHeaderTableSize,
serveG: newGoroutineLock(),
pushEnabled: true,
srv: s,
hs: opts.baseConfig(),
conn: c,
baseCtx: baseCtx,
remoteAddrStr: c.RemoteAddr().String(),
bw: newBufferedWriter(c),
handler: opts.handler(),
streams: make(map[uint32]*stream),
readFrameCh: make(chan readFrameResult),
wantWriteFrameCh: make(chan FrameWriteRequest, 8),
wantStartPushCh: make(chan startPushRequest, 8),
wroteFrameCh: make(chan frameWriteResult, 1), // buffered; one send in writeFrameAsync
bodyReadCh: make(chan bodyReadMsg), // buffering doesn't matter either way
doneServing: make(chan struct{}),
clientMaxStreams: math.MaxUint32, // Section 6.5.2: "Initially, there is no limit to this value"
advMaxStreams: s.maxConcurrentStreams(),
initialStreamSendWindowSize: initialWindowSize,
maxFrameSize: initialMaxFrameSize,
headerTableSize: initialHeaderTableSize,
serveG: newGoroutineLock(),
pushEnabled: true,
}
// The net/http package sets the write deadline from the
// http.Server.WriteTimeout during the TLS handshake, but then
// passes the connection off to us with the deadline already
// set. Disarm it here so that it is not applied to additional
// streams opened on this connection.
// TODO: implement WriteTimeout fully. See Issue 18437.
// passes the connection off to us with the deadline already set.
// Write deadlines are set per stream in serverConn.newStream.
// Disarm the net.Conn write deadline here.
if sc.hs.WriteTimeout != 0 {
sc.conn.SetWriteDeadline(time.Time{})
}
@ -294,6 +320,9 @@ func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
sc.writeSched = NewRandomWriteScheduler()
}
// These start at the RFC-specified defaults. If there is a higher
// configured value for inflow, that will be updated when we send a
// WINDOW_UPDATE shortly after sending SETTINGS.
sc.flow.add(initialWindowSize)
sc.inflow.add(initialWindowSize)
sc.hpackEncoder = hpack.NewEncoder(&sc.headerWriteBuf)
@ -387,34 +416,34 @@ type serverConn struct {
writeSched WriteScheduler
// Everything following is owned by the serve loop; use serveG.check():
serveG goroutineLock // used to verify funcs are on serve()
pushEnabled bool
sawFirstSettings bool // got the initial SETTINGS frame after the preface
needToSendSettingsAck bool
unackedSettings int // how many SETTINGS have we sent without ACKs?
clientMaxStreams uint32 // SETTINGS_MAX_CONCURRENT_STREAMS from client (our PUSH_PROMISE limit)
advMaxStreams uint32 // our SETTINGS_MAX_CONCURRENT_STREAMS advertised the client
curClientStreams uint32 // number of open streams initiated by the client
curPushedStreams uint32 // number of open streams initiated by server push
maxClientStreamID uint32 // max ever seen from client (odd), or 0 if there have been no client requests
maxPushPromiseID uint32 // ID of the last push promise (even), or 0 if there have been no pushes
streams map[uint32]*stream
initialWindowSize int32
maxFrameSize int32
headerTableSize uint32
peerMaxHeaderListSize uint32 // zero means unknown (default)
canonHeader map[string]string // http2-lower-case -> Go-Canonical-Case
writingFrame bool // started writing a frame (on serve goroutine or separate)
writingFrameAsync bool // started a frame on its own goroutine but haven't heard back on wroteFrameCh
needsFrameFlush bool // last frame write wasn't a flush
inGoAway bool // we've started to or sent GOAWAY
inFrameScheduleLoop bool // whether we're in the scheduleFrameWrite loop
needToSendGoAway bool // we need to schedule a GOAWAY frame write
goAwayCode ErrCode
shutdownTimerCh <-chan time.Time // nil until used
shutdownTimer *time.Timer // nil until used
idleTimer *time.Timer // nil if unused
idleTimerCh <-chan time.Time // nil if unused
serveG goroutineLock // used to verify funcs are on serve()
pushEnabled bool
sawFirstSettings bool // got the initial SETTINGS frame after the preface
needToSendSettingsAck bool
unackedSettings int // how many SETTINGS have we sent without ACKs?
clientMaxStreams uint32 // SETTINGS_MAX_CONCURRENT_STREAMS from client (our PUSH_PROMISE limit)
advMaxStreams uint32 // our SETTINGS_MAX_CONCURRENT_STREAMS advertised the client
curClientStreams uint32 // number of open streams initiated by the client
curPushedStreams uint32 // number of open streams initiated by server push
maxClientStreamID uint32 // max ever seen from client (odd), or 0 if there have been no client requests
maxPushPromiseID uint32 // ID of the last push promise (even), or 0 if there have been no pushes
streams map[uint32]*stream
initialStreamSendWindowSize int32
maxFrameSize int32
headerTableSize uint32
peerMaxHeaderListSize uint32 // zero means unknown (default)
canonHeader map[string]string // http2-lower-case -> Go-Canonical-Case
writingFrame bool // started writing a frame (on serve goroutine or separate)
writingFrameAsync bool // started a frame on its own goroutine but haven't heard back on wroteFrameCh
needsFrameFlush bool // last frame write wasn't a flush
inGoAway bool // we've started to or sent GOAWAY
inFrameScheduleLoop bool // whether we're in the scheduleFrameWrite loop
needToSendGoAway bool // we need to schedule a GOAWAY frame write
goAwayCode ErrCode
shutdownTimerCh <-chan time.Time // nil until used
shutdownTimer *time.Timer // nil until used
idleTimer *time.Timer // nil if unused
idleTimerCh <-chan time.Time // nil if unused
// Owned by the writeFrameAsync goroutine:
headerWriteBuf bytes.Buffer
@ -463,10 +492,10 @@ type stream struct {
numTrailerValues int64
weight uint8
state streamState
resetQueued bool // RST_STREAM queued for write; set by sc.resetStream
gotTrailerHeader bool // HEADER frame for trailers was seen
wroteHeaders bool // whether we wrote headers (not status 100)
reqBuf []byte // if non-nil, body pipe buffer to return later at EOF
resetQueued bool // RST_STREAM queued for write; set by sc.resetStream
gotTrailerHeader bool // HEADER frame for trailers was seen
wroteHeaders bool // whether we wrote headers (not status 100)
writeDeadline *time.Timer // nil if unused
trailer http.Header // accumulated trailers
reqTrailer http.Header // handler's Request.Trailer
@ -696,21 +725,23 @@ func (sc *serverConn) serve() {
{SettingMaxFrameSize, sc.srv.maxReadFrameSize()},
{SettingMaxConcurrentStreams, sc.advMaxStreams},
{SettingMaxHeaderListSize, sc.maxHeaderListSize()},
// TODO: more actual settings, notably
// SettingInitialWindowSize, but then we also
// want to bump up the conn window size the
// same amount here right after the settings
{SettingInitialWindowSize, uint32(sc.srv.initialStreamRecvWindowSize())},
},
})
sc.unackedSettings++
// Each connection starts with intialWindowSize inflow tokens.
// If a higher value is configured, we add more tokens.
if diff := sc.srv.initialConnRecvWindowSize() - initialWindowSize; diff > 0 {
sc.sendWindowUpdate(nil, int(diff))
}
if err := sc.readPreface(); err != nil {
sc.condlogf(err, "http2: server: error reading preface from client %v: %v", sc.conn.RemoteAddr(), err)
return
}
// Now that we've got the preface, get us out of the
// "StateNew" state. We can't go directly to idle, though.
// "StateNew" state. We can't go directly to idle, though.
// Active means we read some data and anticipate a request. We'll
// do another Active when we get a HEADERS frame.
sc.setConnState(http.StateActive)
@ -735,6 +766,10 @@ func (sc *serverConn) serve() {
loopNum++
select {
case wr := <-sc.wantWriteFrameCh:
if se, ok := wr.write.(StreamError); ok {
sc.resetStream(se)
break
}
sc.writeFrame(wr)
case spr := <-sc.wantStartPushCh:
sc.startPush(spr)
@ -1014,7 +1049,11 @@ func (sc *serverConn) wroteFrame(res frameWriteResult) {
// stateClosed after the RST_STREAM frame is
// written.
st.state = stateHalfClosedLocal
sc.resetStream(streamError(st.id, ErrCodeCancel))
// Section 8.1: a server MAY request that the client abort
// transmission of a request without error by sending a
// RST_STREAM with an error code of NO_ERROR after sending
// a complete response.
sc.resetStream(streamError(st.id, ErrCodeNo))
case stateHalfClosedRemote:
sc.closeStream(st, errHandlerComplete)
}
@ -1305,6 +1344,9 @@ func (sc *serverConn) closeStream(st *stream, err error) {
panic(fmt.Sprintf("invariant; can't close stream in state %v", st.state))
}
st.state = stateClosed
if st.writeDeadline != nil {
st.writeDeadline.Stop()
}
if st.isPushed() {
sc.curPushedStreams--
} else {
@ -1395,9 +1437,9 @@ func (sc *serverConn) processSettingInitialWindowSize(val uint32) error {
// adjust the size of all stream flow control windows that it
// maintains by the difference between the new value and the
// old value."
old := sc.initialWindowSize
sc.initialWindowSize = int32(val)
growth := sc.initialWindowSize - old // may be negative
old := sc.initialStreamSendWindowSize
sc.initialStreamSendWindowSize = int32(val)
growth := int32(val) - old // may be negative
for _, st := range sc.streams {
if !st.flow.add(growth) {
// 6.9.2 Initial Flow Control Window Size
@ -1543,6 +1585,12 @@ func (st *stream) copyTrailersToHandlerRequest() {
}
}
// onWriteTimeout is run on its own goroutine (from time.AfterFunc)
// when the stream's WriteTimeout has fired.
func (st *stream) onWriteTimeout() {
st.sc.writeFrameFromHandler(FrameWriteRequest{write: streamError(st.id, ErrCodeInternal)})
}
func (sc *serverConn) processHeaders(f *MetaHeadersFrame) error {
sc.serveG.check()
id := f.StreamID
@ -1719,9 +1767,12 @@ func (sc *serverConn) newStream(id, pusherID uint32, state streamState) *stream
}
st.cw.Init()
st.flow.conn = &sc.flow // link to conn-level counter
st.flow.add(sc.initialWindowSize)
st.inflow.conn = &sc.inflow // link to conn-level counter
st.inflow.add(initialWindowSize) // TODO: update this when we send a higher initial window size in the initial settings
st.flow.add(sc.initialStreamSendWindowSize)
st.inflow.conn = &sc.inflow // link to conn-level counter
st.inflow.add(sc.srv.initialStreamRecvWindowSize())
if sc.hs.WriteTimeout != 0 {
st.writeDeadline = time.AfterFunc(sc.hs.WriteTimeout, st.onWriteTimeout)
}
sc.streams[id] = st
sc.writeSched.OpenStream(st.id, OpenStreamOptions{PusherID: pusherID})
@ -1785,16 +1836,14 @@ func (sc *serverConn) newWriterAndRequest(st *stream, f *MetaHeadersFrame) (*res
return nil, nil, err
}
if bodyOpen {
st.reqBuf = getRequestBodyBuf()
req.Body.(*requestBody).pipe = &pipe{
b: &fixedBuffer{buf: st.reqBuf},
}
if vv, ok := rp.header["Content-Length"]; ok {
req.ContentLength, _ = strconv.ParseInt(vv[0], 10, 64)
} else {
req.ContentLength = -1
}
req.Body.(*requestBody).pipe = &pipe{
b: &dataBuffer{expected: req.ContentLength},
}
}
return rw, req, nil
}
@ -1890,24 +1939,6 @@ func (sc *serverConn) newWriterAndRequestNoBody(st *stream, rp requestParam) (*r
return rw, req, nil
}
var reqBodyCache = make(chan []byte, 8)
func getRequestBodyBuf() []byte {
select {
case b := <-reqBodyCache:
return b
default:
return make([]byte, initialWindowSize)
}
}
func putRequestBodyBuf(b []byte) {
select {
case reqBodyCache <- b:
default:
}
}
// Run on its own goroutine.
func (sc *serverConn) runHandler(rw *responseWriter, req *http.Request, handler func(http.ResponseWriter, *http.Request)) {
didPanic := true
@ -2003,12 +2034,6 @@ func (sc *serverConn) noteBodyReadFromHandler(st *stream, n int, err error) {
case <-sc.doneServing:
}
}
if err == io.EOF {
if buf := st.reqBuf; buf != nil {
st.reqBuf = nil // shouldn't matter; field unused by other
putRequestBodyBuf(buf)
}
}
}
func (sc *serverConn) noteBodyRead(st *stream, n int) {
@ -2103,8 +2128,8 @@ func (b *requestBody) Read(p []byte) (n int, err error) {
return
}
// responseWriter is the http.ResponseWriter implementation. It's
// intentionally small (1 pointer wide) to minimize garbage. The
// responseWriter is the http.ResponseWriter implementation. It's
// intentionally small (1 pointer wide) to minimize garbage. The
// responseWriterState pointer inside is zeroed at the end of a
// request (in handlerDone) and calls on the responseWriter thereafter
// simply crash (caller's mistake), but the much larger responseWriterState
@ -2278,7 +2303,7 @@ const TrailerPrefix = "Trailer:"
// says you SHOULD (but not must) predeclare any trailers in the
// header, the official ResponseWriter rules said trailers in Go must
// be predeclared, and then we reuse the same ResponseWriter.Header()
// map to mean both Headers and Trailers. When it's time to write the
// map to mean both Headers and Trailers. When it's time to write the
// Trailers, we pick out the fields of Headers that were declared as
// trailers. That worked for a while, until we found the first major
// user of Trailers in the wild: gRPC (using them only over http2),