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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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72 lines
1.5 KiB
72 lines
1.5 KiB
package http2interop |
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import ( |
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"encoding/binary" |
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"fmt" |
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"io" |
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) |
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type GoAwayFrame struct { |
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Header FrameHeader |
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Reserved |
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StreamID |
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// TODO(carl-mastrangelo): make an enum out of this. |
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Code uint32 |
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Data []byte |
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} |
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func (f *GoAwayFrame) GetHeader() *FrameHeader { |
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return &f.Header |
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} |
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func (f *GoAwayFrame) ParsePayload(r io.Reader) error { |
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raw := make([]byte, f.Header.Length) |
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if _, err := io.ReadFull(r, raw); err != nil { |
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return err |
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} |
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return f.UnmarshalPayload(raw) |
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} |
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func (f *GoAwayFrame) UnmarshalPayload(raw []byte) error { |
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if f.Header.Length != len(raw) { |
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return fmt.Errorf("Invalid Payload length %d != %d", f.Header.Length, len(raw)) |
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} |
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if f.Header.Length < 8 { |
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return fmt.Errorf("Invalid Payload length %d", f.Header.Length) |
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} |
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*f = GoAwayFrame{ |
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Reserved: Reserved(raw[0]>>7 == 1), |
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StreamID: StreamID(binary.BigEndian.Uint32(raw[0:4]) & 0x7fffffff), |
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Code: binary.BigEndian.Uint32(raw[4:8]), |
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Data: []byte(string(raw[8:])), |
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} |
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return nil |
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} |
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func (f *GoAwayFrame) MarshalPayload() ([]byte, error) { |
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raw := make([]byte, 8, 8+len(f.Data)) |
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binary.BigEndian.PutUint32(raw[:4], uint32(f.StreamID)) |
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binary.BigEndian.PutUint32(raw[4:8], f.Code) |
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raw = append(raw, f.Data...) |
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return raw, nil |
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} |
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func (f *GoAwayFrame) MarshalBinary() ([]byte, error) { |
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payload, err := f.MarshalPayload() |
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if err != nil { |
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return nil, err |
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} |
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f.Header.Length = len(payload) |
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f.Header.Type = GoAwayFrameType |
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header, err := f.Header.MarshalBinary() |
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if err != nil { |
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return nil, err |
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} |
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header = append(header, payload...) |
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return header, nil |
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}
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