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https://gitclone.com/github.com/MetaCubeX/Clash.Meta
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45 lines
919 B
Go
45 lines
919 B
Go
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package session
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import (
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"encoding/binary"
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)
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const ( // cmds
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cmdWaste = 0 // Paddings
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cmdSYN = 1 // stream open
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cmdPSH = 2 // data push
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cmdFIN = 3 // stream close, a.k.a EOF mark
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cmdSettings = 4 // Settings
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cmdAlert = 5 // Alert
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cmdUpdatePaddingScheme = 6 // update padding scheme
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)
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const (
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headerOverHeadSize = 1 + 4 + 2
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)
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// frame defines a packet from or to be multiplexed into a single connection
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type frame struct {
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cmd byte // 1
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sid uint32 // 4
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data []byte // 2 + len(data)
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}
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func newFrame(cmd byte, sid uint32) frame {
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return frame{cmd: cmd, sid: sid}
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}
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type rawHeader [headerOverHeadSize]byte
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func (h rawHeader) Cmd() byte {
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return h[0]
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}
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func (h rawHeader) StreamID() uint32 {
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return binary.BigEndian.Uint32(h[1:])
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}
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func (h rawHeader) Length() uint16 {
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return binary.BigEndian.Uint16(h[5:])
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}
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