func (frame *DATA) WriteTo(writer io.Writer) (int64, error) {
length := len(frame.Data)
if length > common.MAX_DATA_SIZE {
return 0, errors.New("Error: Data size too large.")
}
if length == 0 && !frame.Flags.FIN() {
return 0, errors.New("Error: Data is empty.")
}
out := make([]byte, 8)
out[0] = frame.StreamID.B1() // Control bit and Stream ID
out[1] = frame.StreamID.B2() // Stream ID
out[2] = frame.StreamID.B3() // Stream ID
out[3] = frame.StreamID.B4() // Stream ID
out[4] = byte(frame.Flags) // Flags
out[5] = byte(length >> 16) // Length
out[6] = byte(length >> 8) // Length
out[7] = byte(length) // Length
if err := common.WriteExactly(writer, out); err != nil {
return 0, err
}
if err := common.WriteExactly(writer, frame.Data); err != nil {
return 8, err
}
return int64(length + 8), nil
}
func (frame *SETTINGS) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
settings := encodeSettings(frame.Settings)
numSettings := uint32(len(frame.Settings))
length := 4 + len(settings)
out := make([]byte, 12)
out[0] = 128 // Control bit and Version
out[1] = 3 // Version
out[2] = 0 // Type
out[3] = 4 // Type
out[4] = byte(frame.Flags) // Flags
out[5] = byte(length >> 16) // Length
out[6] = byte(length >> 8) // Length
out[7] = byte(length) // Length
out[8] = byte(numSettings >> 24) // Number of Entries
out[9] = byte(numSettings >> 16) // Number of Entries
out[10] = byte(numSettings >> 8) // Number of Entries
out[11] = byte(numSettings) // Number of Entries
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
err = common.WriteExactly(&c, settings)
if err != nil {
return c.N, err
}
return c.N, nil
}
func (frame *SYN_STREAM) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
if frame.rawHeader == nil {
return c.N, errors.New("Error: Headers not written.")
}
if !frame.StreamID.Valid() {
return c.N, common.StreamIdTooLarge
}
if frame.StreamID.Zero() {
return c.N, common.StreamIdIsZero
}
if !frame.AssocStreamID.Valid() {
return c.N, common.StreamIdTooLarge
}
header := frame.rawHeader
length := 10 + len(header)
out := make([]byte, 18)
out[0] = 128 // Control bit and Version
out[1] = 2 // Version
out[2] = 0 // Type
out[3] = 1 // Type
out[4] = byte(frame.Flags) // Flags
out[5] = byte(length >> 16) // Length
out[6] = byte(length >> 8) // Length
out[7] = byte(length) // Length
out[8] = frame.StreamID.B1() // Stream ID
out[9] = frame.StreamID.B2() // Stream ID
out[10] = frame.StreamID.B3() // Stream ID
out[11] = frame.StreamID.B4() // Stream ID
out[12] = frame.AssocStreamID.B1() // Associated Stream ID
out[13] = frame.AssocStreamID.B2() // Associated Stream ID
out[14] = frame.AssocStreamID.B3() // Associated Stream ID
out[15] = frame.AssocStreamID.B4() // Associated Stream ID
out[16] = frame.Priority.Byte(2) // Priority and Unused
out[17] = 0 // Unused
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
err = common.WriteExactly(&c, header)
if err != nil {
return c.N, err
}
return c.N, nil
}
func (frame *CREDENTIAL) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
proofLength := len(frame.Proof)
certsLength := 0
for _, cert := range frame.Certificates {
certsLength += len(cert.Raw)
}
length := 6 + proofLength + certsLength
out := make([]byte, 14)
out[0] = 128 // Control bit and Version
out[1] = 3 // Version
out[2] = 0 // Type
out[3] = 10 // Type
out[4] = 0 // common.Flags
out[5] = byte(length >> 16) // Length
out[6] = byte(length >> 8) // Length
out[7] = byte(length) // Length
out[8] = byte(frame.Slot >> 8) // Slot
out[9] = byte(frame.Slot) // Slot
out[10] = byte(proofLength >> 24) // Proof Length
out[11] = byte(proofLength >> 16) // Proof Length
out[12] = byte(proofLength >> 8) // Proof Length
out[13] = byte(proofLength) // Proof Length
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
if len(frame.Proof) > 0 {
err = common.WriteExactly(&c, frame.Proof)
if err != nil {
return c.N, err
}
}
written := int64(14 + len(frame.Proof))
for _, cert := range frame.Certificates {
err = common.WriteExactly(&c, cert.Raw)
if err != nil {
return c.N, err
}
written += int64(len(cert.Raw))
}
return c.N, nil
}
func (frame *RST_STREAM) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
if !frame.StreamID.Valid() {
return c.N, common.StreamIdTooLarge
}
out := make([]byte, 16)
out[0] = 128 // Control bit and Version
out[1] = 2 // Version
out[2] = 0 // Type
out[3] = 3 // Type
out[4] = 0 // Flags
out[5] = 0 // Length
out[6] = 0 // Length
out[7] = 8 // Length
out[8] = frame.StreamID.B1() // Stream ID
out[9] = frame.StreamID.B2() // Stream ID
out[10] = frame.StreamID.B3() // Stream ID
out[11] = frame.StreamID.B4() // Stream ID
out[12] = frame.Status.B1() // Status
out[13] = frame.Status.B2() // Status
out[14] = frame.Status.B3() // Status
out[15] = frame.Status.B4() // Status
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
return c.N, nil
}
func (frame *GOAWAY) WriteTo(writer io.Writer) (int64, error) {
if !frame.LastGoodStreamID.Valid() {
return 0, common.StreamIdTooLarge
}
out := make([]byte, 16)
out[0] = 128 // Control bit and Version
out[1] = 3 // Version
out[2] = 0 // Type
out[3] = 7 // Type
out[4] = 0 // Flags
out[5] = 0 // Length
out[6] = 0 // Length
out[7] = 8 // Length
out[8] = frame.LastGoodStreamID.B1() // Last Good Stream ID
out[9] = frame.LastGoodStreamID.B2() // Last Good Stream ID
out[10] = frame.LastGoodStreamID.B3() // Last Good Stream ID
out[11] = frame.LastGoodStreamID.B4() // Last Good Stream ID
out[12] = byte(frame.Status >> 24) // Status Code
out[13] = byte(frame.Status >> 16) // Status Code
out[14] = byte(frame.Status >> 8) // Status Code
out[15] = byte(frame.Status) // Status Code
err := common.WriteExactly(writer, out)
if err != nil {
return 0, err
}
return 16, nil
}
func (frame *WINDOW_UPDATE) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
out := make([]byte, 16)
out[0] = 128 // Control bit and Version
out[1] = 3 // Version
out[2] = 0 // Type
out[3] = 9 // Type
out[4] = 0 // Flags
out[5] = 0 // Length
out[6] = 0 // Length
out[7] = 8 // Length
out[8] = frame.StreamID.B1() // Stream ID
out[9] = frame.StreamID.B2() // Stream ID
out[10] = frame.StreamID.B3() // Stream ID
out[11] = frame.StreamID.B4() // Stream ID
out[12] = byte(frame.DeltaWindowSize>>24) & 0x7f // Delta Window Size
out[13] = byte(frame.DeltaWindowSize >> 16) // Delta Window Size
out[14] = byte(frame.DeltaWindowSize >> 8) // Delta Window Size
out[15] = byte(frame.DeltaWindowSize) // Delta Window Size
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
return c.N, nil
}
func (frame *GOAWAY) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
if !frame.LastGoodStreamID.Valid() {
return c.N, common.StreamIdTooLarge
}
out := make([]byte, 12)
out[0] = 128 // Control bit and Version
out[1] = 2 // Version
out[2] = 0 // Type
out[3] = 7 // Type
out[4] = 0 // Flags
out[5] = 0 // Length
out[6] = 0 // Length
out[7] = 4 // Length
out[8] = frame.LastGoodStreamID.B1() // Last Good Stream ID
out[9] = frame.LastGoodStreamID.B2() // Last Good Stream ID
out[10] = frame.LastGoodStreamID.B3() // Last Good Stream ID
out[11] = frame.LastGoodStreamID.B4() // Last Good Stream ID
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
return c.N, nil
}
func (frame *SYN_REPLY) WriteTo(writer io.Writer) (int64, error) {
if frame.rawHeader == nil {
return 0, errors.New("Error: Header not written.")
}
if !frame.StreamID.Valid() {
return 0, common.StreamIdTooLarge
}
if frame.StreamID.Zero() {
return 0, common.StreamIdIsZero
}
header := frame.rawHeader
length := 6 + len(header)
out := make([]byte, 14)
out[0] = 128 // Control bit and Version
out[1] = 2 // Version
out[2] = 0 // Type
out[3] = 2 // Type
out[4] = byte(frame.Flags) // Flags
out[5] = byte(length >> 16) // Length
out[6] = byte(length >> 8) // Length
out[7] = byte(length) // Length
out[8] = frame.StreamID.B1() // Stream ID
out[9] = frame.StreamID.B2() // Stream ID
out[10] = frame.StreamID.B3() // Stream ID
out[11] = frame.StreamID.B4() // Stream ID
out[12] = 0 // Unused
out[13] = 0 // Unused
err := common.WriteExactly(writer, out)
if err != nil {
return 0, err
}
err = common.WriteExactly(writer, header)
if err != nil {
return 14, err
}
return int64(len(header) + 14), nil
}
func (frame *HEADERS) WriteTo(writer io.Writer) (int64, error) {
c := common.WriteCounter{W: writer}
if frame.rawHeader == nil {
return c.N, errors.New("Error: Headers not written.")
}
if !frame.StreamID.Valid() {
return c.N, common.StreamIdTooLarge
}
if frame.StreamID.Zero() {
return c.N, common.StreamIdIsZero
}
header := frame.rawHeader
length := 4 + len(header)
out := make([]byte, 16)
out[0] = 128 // Control bit and Version
out[1] = 2 // Version
out[2] = 0 // Type
out[3] = 8 // Type
out[4] = byte(frame.Flags) // Flags
out[5] = byte(length >> 16) // Length
out[6] = byte(length >> 8) // Length
out[7] = byte(length) // Length
out[8] = frame.StreamID.B1() // Stream ID
out[9] = frame.StreamID.B2() // Stream ID
out[10] = frame.StreamID.B3() // Stream ID
out[11] = frame.StreamID.B4() // Stream ID
err := common.WriteExactly(&c, out)
if err != nil {
return c.N, err
}
err = common.WriteExactly(&c, header)
if err != nil {
return c.N, err
}
return c.N, nil
}
func (frame *PING) WriteTo(writer io.Writer) (int64, error) {
out := make([]byte, 12)
out[0] = 128 // Control bit and Version
out[1] = 2 // Version
out[2] = 0 // Type
out[3] = 6 // Type
out[4] = 0 // Flags
out[5] = 0 // Length
out[6] = 0 // Length
out[7] = 4 // Length
out[8] = byte(frame.PingID >> 24) // Ping ID
out[9] = byte(frame.PingID >> 16) // Ping ID
out[10] = byte(frame.PingID >> 8) // Ping ID
out[11] = byte(frame.PingID) // Ping ID
err := common.WriteExactly(writer, out)
if err != nil {
return 0, err
}
return 12, nil
}
