func createAttachment(stream *spdystream.Stream) (*os.File, error) {
if stream.IsFinished() {
return nil, fmt.Errorf("stream already finished")
}
socketFds, socketErr := syscall.Socketpair(syscall.AF_LOCAL, syscall.SOCK_STREAM|syscall.FD_CLOEXEC, 0)
if socketErr != nil {
return nil, socketErr
}
pipe := os.NewFile(uintptr(socketFds[1]), "")
defer pipe.Close()
conn, connErr := net.FileConn(pipe)
if connErr != nil {
return nil, connErr
}
go func() {
io.Copy(conn, stream)
conn.Close()
}()
go func() {
io.Copy(stream, conn)
}()
return os.NewFile(uintptr(socketFds[0]), ""), nil
}
func (s *StreamSession) getStreamChan(stream *spdystream.Stream) chan *spdystream.Stream {
if stream == nil {
return s.streamChan
}
streamChan, ok := s.subStreamChans[stream.String()]
if ok {
return streamChan
}
return s.streamChan
}
func (l *ListenSession) getStreamChan(stream *spdystream.Stream) chan *spdystream.Stream {
if stream == nil {
return l.streamChan
}
l.streamLock.RLock()
defer l.streamLock.RUnlock()
streamChan, ok := l.subStreamChans[stream.String()]
if ok {
return streamChan
}
return l.streamChan
}
func (s *Server) getStreamChan(stream *spdystream.Stream) chan *spdystream.Stream {
if stream == nil {
return s.streamChan
}
s.streamLock.RLock()
defer s.streamLock.RUnlock()
streamChan, ok := s.subStreamChans[stream.String()]
if ok {
return streamChan
}
return s.streamChan
}
// newSpdyStream is the internal new stream handler used by spdystream.Connection.Serve.
// It calls connection's newStreamHandler, giving it the opportunity to accept or reject
// the stream. If newStreamHandler returns an error, the stream is rejected. If not, the
// stream is accepted and registered with the connection.
func (c *connection) newSpdyStream(stream *spdystream.Stream) {
err := c.newStreamHandler(stream)
rejectStream := (err != nil)
if rejectStream {
glog.Warningf("Stream rejected: %v", err)
stream.Reset()
return
}
c.registerStream(stream)
stream.SendReply(http.Header{}, rejectStream)
}
func createStreamMessage(stream *spdystream.Stream, mode int, streamChans streamChanProvider, ret libchan.Sender) (*libchan.Message, error) {
dataString := stream.Headers()["Data"]
if len(dataString) != 1 {
if len(dataString) == 0 {
return nil, fmt.Errorf("Stream(%s) is missing data header", stream)
} else {
return nil, fmt.Errorf("Stream(%s) has multiple data headers", stream)
}
}
data, decodeErr := base64.URLEncoding.DecodeString(dataString[0])
if decodeErr != nil {
return nil, decodeErr
}
var attach *os.File
if !stream.IsFinished() {
socketFds, socketErr := syscall.Socketpair(syscall.AF_LOCAL, syscall.SOCK_STREAM|syscall.FD_CLOEXEC, 0)
if socketErr != nil {
return nil, socketErr
}
attach = os.NewFile(uintptr(socketFds[0]), "")
conn, connErr := net.FileConn(os.NewFile(uintptr(socketFds[1]), ""))
if connErr != nil {
return nil, connErr
}
go func() {
io.Copy(conn, stream)
}()
go func() {
io.Copy(stream, conn)
}()
}
retSender := ret
if retSender == nil || libchan.RetPipe.Equals(retSender) {
retSender = &StreamSender{stream: stream, streamChans: streamChans}
}
if mode&libchan.Ret == 0 {
retSender.Close()
}
return &libchan.Message{
Data: data,
Fd: attach,
Ret: retSender,
}, nil
}
// newSpdyStream is the internal new stream handler used by spdystream.Connection.Serve.
// It calls connection's newStreamHandler, giving it the opportunity to accept or reject
// the stream. If newStreamHandler returns an error, the stream is rejected. If not, the
// stream is accepted and registered with the connection.
func (c *connection) newSpdyStream(stream *spdystream.Stream) {
replySent := make(chan struct{})
err := c.newStreamHandler(stream, replySent)
rejectStream := (err != nil)
if rejectStream {
glog.Warningf("Stream rejected: %v", err)
stream.Reset()
return
}
c.registerStream(stream)
stream.SendReply(http.Header{}, rejectStream)
close(replySent)
}
func (p *spdyStreamProvider) newStreamHandler(stream *spdystream.Stream) {
s := &spdyStream{
stream: stream,
}
returnHeaders := http.Header{}
var finish bool
select {
case <-p.closeChan:
returnHeaders.Set(":status", "502")
finish = true
case p.listenChan <- s:
returnHeaders.Set(":status", "200")
}
stream.SendReply(returnHeaders, finish)
}
func (s *Transport) newStreamHandler(stream *spdystream.Stream) {
referenceIDString := stream.Headers().Get("libchan-ref")
parentIDString := stream.Headers().Get("libchan-parent-ref")
returnHeaders := http.Header{}
finish := false
referenceID, parseErr := strconv.ParseUint(referenceIDString, 10, 64)
if parseErr != nil {
returnHeaders.Set("status", "400")
finish = true
} else {
if parentIDString == "" {
byteStream := &byteStream{
referenceID: referenceID,
stream: stream,
session: s,
}
s.byteStreamC.L.Lock()
s.byteStreams[referenceID] = byteStream
s.byteStreamC.Broadcast()
s.byteStreamC.L.Unlock()
returnHeaders.Set("status", "200")
} else {
parentID, parseErr := strconv.ParseUint(parentIDString, 10, 64)
if parseErr != nil {
returnHeaders.Set("status", "400")
finish = true
} else {
c := &channel{
referenceID: referenceID,
parentID: parentID,
stream: stream,
session: s,
}
s.channelC.L.Lock()
s.channels[referenceID] = c
s.channelC.Broadcast()
s.channelC.L.Unlock()
if parentID == 0 {
c.direction = inbound
s.receiverChan <- c
}
returnHeaders.Set("status", "200")
}
}
}
stream.SendReply(returnHeaders, finish)
}
func (s *Server) addStreamChan(stream *spdystream.Stream, streamChan chan *spdystream.Stream) {
s.streamLock.Lock()
s.subStreamChans[stream.String()] = streamChan
s.streamLock.Unlock()
}
func (s *Server) streamHandler(stream *spdystream.Stream) {
streamChan := s.getStreamChan(stream.Parent())
streamChan <- stream
}
func createStreamMessage(stream *spdystream.Stream, mode int, streamChans streamChanProvider, ret beam.Sender) (*beam.Message, error) {
verbString := stream.Headers()["Verb"]
if len(verbString) != 1 {
if len(verbString) == 0 {
return nil, fmt.Errorf("Stream(%s) is missing verb header", stream)
} else {
return nil, fmt.Errorf("Stream(%s) has multiple verb headers", stream)
}
}
verb, verbOk := verbs[verbString[0]]
if !verbOk {
return nil, fmt.Errorf("Unknown verb: %s", verbString[0])
}
var args []string
argString := stream.Headers()["Args"]
if len(argString) > 1 {
return nil, fmt.Errorf("Stream(%s) has multiple args headers", stream)
}
if len(argString) == 1 {
var err error
args, err = decodeArgs(argString[0])
if err != nil {
return nil, err
}
}
var attach *os.File
if !stream.IsFinished() {
socketFds, socketErr := syscall.Socketpair(syscall.AF_LOCAL, syscall.SOCK_STREAM|syscall.FD_CLOEXEC, 0)
if socketErr != nil {
return nil, socketErr
}
attach = os.NewFile(uintptr(socketFds[0]), "")
conn, connErr := net.FileConn(os.NewFile(uintptr(socketFds[1]), ""))
if connErr != nil {
return nil, connErr
}
go func() {
io.Copy(conn, stream)
}()
go func() {
io.Copy(stream, conn)
}()
}
retSender := ret
if retSender == nil || beam.RetPipe.Equals(retSender) {
retSender = &StreamSender{stream: stream, streamChans: streamChans}
}
if mode&beam.Ret == 0 {
retSender.Close()
}
return &beam.Message{
Verb: verb,
Args: args,
Att: attach,
Ret: retSender,
}, nil
}
func (l *ListenSession) streamHandler(stream *spdystream.Stream) {
// TODO authorize stream
stream.SendReply(http.Header{}, false)
streamChan := l.getStreamChan(stream.Parent())
streamChan <- stream
}
func (l *ListenSession) addStreamChan(stream *spdystream.Stream, streamChan chan *spdystream.Stream) {
l.streamLock.Lock()
l.subStreamChans[stream.String()] = streamChan
l.streamLock.Unlock()
}
func (l *ListenSession) streamHandler(stream *spdystream.Stream) {
streamChan := l.getStreamChan(stream.Parent())
streamChan <- stream
}
func (s *StreamSession) newStreamHandler(stream *spdystream.Stream) {
stream.SendReply(http.Header{}, false)
streamChan := s.getStreamChan(stream.Parent())
streamChan <- stream
}
func (s *StreamSession) newStreamHandler(stream *spdystream.Stream) {
streamChan := s.getStreamChan(stream.Parent())
streamChan <- stream
}
func (s *StreamSession) addStreamChan(stream *spdystream.Stream, streamChan chan *spdystream.Stream) {
s.subStreamChans[stream.String()] = streamChan
}