X-Git-Url: http://git.osdn.net/view?p=bytom%2Fvapor.git;a=blobdiff_plain;f=vendor%2Fgithub.com%2Fhashicorp%2Fyamux%2Fconst.go;fp=vendor%2Fgithub.com%2Fhashicorp%2Fyamux%2Fconst.go;h=0000000000000000000000000000000000000000;hp=4f52938287f46fba03000addfc61b341f16d0982;hb=54373c1a3efe0e373ec1605840a4363e4b246c46;hpb=ee01d543fdfe1fd0a4d548965c66f7923ea7b062 diff --git a/vendor/github.com/hashicorp/yamux/const.go b/vendor/github.com/hashicorp/yamux/const.go deleted file mode 100644 index 4f529382..00000000 --- a/vendor/github.com/hashicorp/yamux/const.go +++ /dev/null @@ -1,157 +0,0 @@ -package yamux - -import ( - "encoding/binary" - "fmt" -) - -var ( - // ErrInvalidVersion means we received a frame with an - // invalid version - ErrInvalidVersion = fmt.Errorf("invalid protocol version") - - // ErrInvalidMsgType means we received a frame with an - // invalid message type - ErrInvalidMsgType = fmt.Errorf("invalid msg type") - - // ErrSessionShutdown is used if there is a shutdown during - // an operation - ErrSessionShutdown = fmt.Errorf("session shutdown") - - // ErrStreamsExhausted is returned if we have no more - // stream ids to issue - ErrStreamsExhausted = fmt.Errorf("streams exhausted") - - // ErrDuplicateStream is used if a duplicate stream is - // opened inbound - ErrDuplicateStream = fmt.Errorf("duplicate stream initiated") - - // ErrReceiveWindowExceeded indicates the window was exceeded - ErrRecvWindowExceeded = fmt.Errorf("recv window exceeded") - - // ErrTimeout is used when we reach an IO deadline - ErrTimeout = fmt.Errorf("i/o deadline reached") - - // ErrStreamClosed is returned when using a closed stream - ErrStreamClosed = fmt.Errorf("stream closed") - - // ErrUnexpectedFlag is set when we get an unexpected flag - ErrUnexpectedFlag = fmt.Errorf("unexpected flag") - - // ErrRemoteGoAway is used when we get a go away from the other side - ErrRemoteGoAway = fmt.Errorf("remote end is not accepting connections") - - // ErrConnectionReset is sent if a stream is reset. This can happen - // if the backlog is exceeded, or if there was a remote GoAway. - ErrConnectionReset = fmt.Errorf("connection reset") - - // ErrConnectionWriteTimeout indicates that we hit the "safety valve" - // timeout writing to the underlying stream connection. - ErrConnectionWriteTimeout = fmt.Errorf("connection write timeout") - - // ErrKeepAliveTimeout is sent if a missed keepalive caused the stream close - ErrKeepAliveTimeout = fmt.Errorf("keepalive timeout") -) - -const ( - // protoVersion is the only version we support - protoVersion uint8 = 0 -) - -const ( - // Data is used for data frames. They are followed - // by length bytes worth of payload. - typeData uint8 = iota - - // WindowUpdate is used to change the window of - // a given stream. The length indicates the delta - // update to the window. - typeWindowUpdate - - // Ping is sent as a keep-alive or to measure - // the RTT. The StreamID and Length value are echoed - // back in the response. - typePing - - // GoAway is sent to terminate a session. The StreamID - // should be 0 and the length is an error code. - typeGoAway -) - -const ( - // SYN is sent to signal a new stream. May - // be sent with a data payload - flagSYN uint16 = 1 << iota - - // ACK is sent to acknowledge a new stream. May - // be sent with a data payload - flagACK - - // FIN is sent to half-close the given stream. - // May be sent with a data payload. - flagFIN - - // RST is used to hard close a given stream. - flagRST -) - -const ( - // initialStreamWindow is the initial stream window size - initialStreamWindow uint32 = 256 * 1024 -) - -const ( - // goAwayNormal is sent on a normal termination - goAwayNormal uint32 = iota - - // goAwayProtoErr sent on a protocol error - goAwayProtoErr - - // goAwayInternalErr sent on an internal error - goAwayInternalErr -) - -const ( - sizeOfVersion = 1 - sizeOfType = 1 - sizeOfFlags = 2 - sizeOfStreamID = 4 - sizeOfLength = 4 - headerSize = sizeOfVersion + sizeOfType + sizeOfFlags + - sizeOfStreamID + sizeOfLength -) - -type header []byte - -func (h header) Version() uint8 { - return h[0] -} - -func (h header) MsgType() uint8 { - return h[1] -} - -func (h header) Flags() uint16 { - return binary.BigEndian.Uint16(h[2:4]) -} - -func (h header) StreamID() uint32 { - return binary.BigEndian.Uint32(h[4:8]) -} - -func (h header) Length() uint32 { - return binary.BigEndian.Uint32(h[8:12]) -} - -func (h header) String() string { - return fmt.Sprintf("Vsn:%d Type:%d Flags:%d StreamID:%d Length:%d", - h.Version(), h.MsgType(), h.Flags(), h.StreamID(), h.Length()) -} - -func (h header) encode(msgType uint8, flags uint16, streamID uint32, length uint32) { - h[0] = protoVersion - h[1] = msgType - binary.BigEndian.PutUint16(h[2:4], flags) - binary.BigEndian.PutUint32(h[4:8], streamID) - binary.BigEndian.PutUint32(h[8:12], length) -}