40 lines
943 B
Go
40 lines
943 B
Go
package chunk
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import (
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"io"
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)
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// Chunk3 is a type 3 chunk.
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// Type 3 chunks have no message header. The stream ID, message length
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// and timestamp delta fields are not present; chunks of this type take
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// values from the preceding chunk for the same Chunk Stream ID. When a
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// single message is split into chunks, all chunks of a message except
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// the first one SHOULD use this type.
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type Chunk3 struct {
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ChunkStreamID byte
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Body []byte
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}
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// Read reads the chunk.
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func (c *Chunk3) Read(r io.Reader, chunkBodyLen uint32) error {
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header := make([]byte, 1)
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_, err := io.ReadFull(r, header)
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if err != nil {
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return err
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}
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c.ChunkStreamID = header[0] & 0x3F
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c.Body = make([]byte, chunkBodyLen)
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_, err = io.ReadFull(r, c.Body)
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return err
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}
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// Marshal writes the chunk.
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func (c Chunk3) Marshal() ([]byte, error) {
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buf := make([]byte, 1+len(c.Body))
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buf[0] = 3<<6 | c.ChunkStreamID
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copy(buf[1:], c.Body)
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return buf, nil
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}
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