mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-14 02:10:21 +00:00
319 lines
7.9 KiB
Go
319 lines
7.9 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package spdy
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"io"
|
|
"net/http"
|
|
"strings"
|
|
)
|
|
|
|
func (frame *SynStreamFrame) write(f *Framer) error {
|
|
return f.writeSynStreamFrame(frame)
|
|
}
|
|
|
|
func (frame *SynReplyFrame) write(f *Framer) error {
|
|
return f.writeSynReplyFrame(frame)
|
|
}
|
|
|
|
func (frame *RstStreamFrame) write(f *Framer) (err error) {
|
|
if frame.StreamId == 0 {
|
|
return &Error{ZeroStreamId, 0}
|
|
}
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeRstStream
|
|
frame.CFHeader.Flags = 0
|
|
frame.CFHeader.length = 8
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
|
return
|
|
}
|
|
if frame.Status == 0 {
|
|
return &Error{InvalidControlFrame, frame.StreamId}
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.Status); err != nil {
|
|
return
|
|
}
|
|
return
|
|
}
|
|
|
|
func (frame *SettingsFrame) write(f *Framer) (err error) {
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeSettings
|
|
frame.CFHeader.length = uint32(len(frame.FlagIdValues)*8 + 4)
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, uint32(len(frame.FlagIdValues))); err != nil {
|
|
return
|
|
}
|
|
for _, flagIdValue := range frame.FlagIdValues {
|
|
flagId := uint32(flagIdValue.Flag)<<24 | uint32(flagIdValue.Id)
|
|
if err = binary.Write(f.w, binary.BigEndian, flagId); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, flagIdValue.Value); err != nil {
|
|
return
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (frame *PingFrame) write(f *Framer) (err error) {
|
|
if frame.Id == 0 {
|
|
return &Error{ZeroStreamId, 0}
|
|
}
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypePing
|
|
frame.CFHeader.Flags = 0
|
|
frame.CFHeader.length = 4
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.Id); err != nil {
|
|
return
|
|
}
|
|
return
|
|
}
|
|
|
|
func (frame *GoAwayFrame) write(f *Framer) (err error) {
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeGoAway
|
|
frame.CFHeader.Flags = 0
|
|
frame.CFHeader.length = 8
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.LastGoodStreamId); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.Status); err != nil {
|
|
return
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (frame *HeadersFrame) write(f *Framer) error {
|
|
return f.writeHeadersFrame(frame)
|
|
}
|
|
|
|
func (frame *WindowUpdateFrame) write(f *Framer) (err error) {
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeWindowUpdate
|
|
frame.CFHeader.Flags = 0
|
|
frame.CFHeader.length = 8
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.DeltaWindowSize); err != nil {
|
|
return
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (frame *DataFrame) write(f *Framer) error {
|
|
return f.writeDataFrame(frame)
|
|
}
|
|
|
|
// WriteFrame writes a frame.
|
|
func (f *Framer) WriteFrame(frame Frame) error {
|
|
return frame.write(f)
|
|
}
|
|
|
|
func writeControlFrameHeader(w io.Writer, h ControlFrameHeader) error {
|
|
if err := binary.Write(w, binary.BigEndian, 0x8000|h.version); err != nil {
|
|
return err
|
|
}
|
|
if err := binary.Write(w, binary.BigEndian, h.frameType); err != nil {
|
|
return err
|
|
}
|
|
flagsAndLength := uint32(h.Flags)<<24 | h.length
|
|
if err := binary.Write(w, binary.BigEndian, flagsAndLength); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func writeHeaderValueBlock(w io.Writer, h http.Header) (n int, err error) {
|
|
n = 0
|
|
if err = binary.Write(w, binary.BigEndian, uint32(len(h))); err != nil {
|
|
return
|
|
}
|
|
n += 2
|
|
for name, values := range h {
|
|
if err = binary.Write(w, binary.BigEndian, uint32(len(name))); err != nil {
|
|
return
|
|
}
|
|
n += 2
|
|
name = strings.ToLower(name)
|
|
if _, err = io.WriteString(w, name); err != nil {
|
|
return
|
|
}
|
|
n += len(name)
|
|
v := strings.Join(values, headerValueSeparator)
|
|
if err = binary.Write(w, binary.BigEndian, uint32(len(v))); err != nil {
|
|
return
|
|
}
|
|
n += 2
|
|
if _, err = io.WriteString(w, v); err != nil {
|
|
return
|
|
}
|
|
n += len(v)
|
|
}
|
|
return
|
|
}
|
|
|
|
func (f *Framer) writeSynStreamFrame(frame *SynStreamFrame) (err error) {
|
|
if frame.StreamId == 0 {
|
|
return &Error{ZeroStreamId, 0}
|
|
}
|
|
// Marshal the headers.
|
|
var writer io.Writer = f.headerBuf
|
|
if !f.headerCompressionDisabled {
|
|
writer = f.headerCompressor
|
|
}
|
|
if _, err = writeHeaderValueBlock(writer, frame.Headers); err != nil {
|
|
return
|
|
}
|
|
if !f.headerCompressionDisabled {
|
|
f.headerCompressor.Flush()
|
|
}
|
|
|
|
// Set ControlFrameHeader.
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeSynStream
|
|
frame.CFHeader.length = uint32(len(f.headerBuf.Bytes()) + 10)
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return err
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
|
return err
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.AssociatedToStreamId); err != nil {
|
|
return err
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.Priority<<5); err != nil {
|
|
return err
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.Slot); err != nil {
|
|
return err
|
|
}
|
|
if _, err = f.w.Write(f.headerBuf.Bytes()); err != nil {
|
|
return err
|
|
}
|
|
f.headerBuf.Reset()
|
|
return nil
|
|
}
|
|
|
|
func (f *Framer) writeSynReplyFrame(frame *SynReplyFrame) (err error) {
|
|
if frame.StreamId == 0 {
|
|
return &Error{ZeroStreamId, 0}
|
|
}
|
|
// Marshal the headers.
|
|
var writer io.Writer = f.headerBuf
|
|
if !f.headerCompressionDisabled {
|
|
writer = f.headerCompressor
|
|
}
|
|
if _, err = writeHeaderValueBlock(writer, frame.Headers); err != nil {
|
|
return
|
|
}
|
|
if !f.headerCompressionDisabled {
|
|
f.headerCompressor.Flush()
|
|
}
|
|
|
|
// Set ControlFrameHeader.
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeSynReply
|
|
frame.CFHeader.length = uint32(len(f.headerBuf.Bytes()) + 4)
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
|
return
|
|
}
|
|
if _, err = f.w.Write(f.headerBuf.Bytes()); err != nil {
|
|
return
|
|
}
|
|
f.headerBuf.Reset()
|
|
return
|
|
}
|
|
|
|
func (f *Framer) writeHeadersFrame(frame *HeadersFrame) (err error) {
|
|
if frame.StreamId == 0 {
|
|
return &Error{ZeroStreamId, 0}
|
|
}
|
|
// Marshal the headers.
|
|
var writer io.Writer = f.headerBuf
|
|
if !f.headerCompressionDisabled {
|
|
writer = f.headerCompressor
|
|
}
|
|
if _, err = writeHeaderValueBlock(writer, frame.Headers); err != nil {
|
|
return
|
|
}
|
|
if !f.headerCompressionDisabled {
|
|
f.headerCompressor.Flush()
|
|
}
|
|
|
|
// Set ControlFrameHeader.
|
|
frame.CFHeader.version = Version
|
|
frame.CFHeader.frameType = TypeHeaders
|
|
frame.CFHeader.length = uint32(len(f.headerBuf.Bytes()) + 4)
|
|
|
|
// Serialize frame to Writer.
|
|
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
|
return
|
|
}
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
|
return
|
|
}
|
|
if _, err = f.w.Write(f.headerBuf.Bytes()); err != nil {
|
|
return
|
|
}
|
|
f.headerBuf.Reset()
|
|
return
|
|
}
|
|
|
|
func (f *Framer) writeDataFrame(frame *DataFrame) (err error) {
|
|
if frame.StreamId == 0 {
|
|
return &Error{ZeroStreamId, 0}
|
|
}
|
|
if frame.StreamId&0x80000000 != 0 || len(frame.Data) > MaxDataLength {
|
|
return &Error{InvalidDataFrame, frame.StreamId}
|
|
}
|
|
|
|
// Serialize frame to Writer.
|
|
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
|
return
|
|
}
|
|
flagsAndLength := uint32(frame.Flags)<<24 | uint32(len(frame.Data))
|
|
if err = binary.Write(f.w, binary.BigEndian, flagsAndLength); err != nil {
|
|
return
|
|
}
|
|
if _, err = f.w.Write(frame.Data); err != nil {
|
|
return
|
|
}
|
|
return nil
|
|
}
|