mirror of
https://github.com/Mrs4s/MiraiGo.git
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36 lines
689 B
Go
36 lines
689 B
Go
package highway
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import (
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"encoding/binary"
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"net"
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)
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var etx = []byte{0x29}
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// frame 包格式
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//
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// - STX: 0x28(40)
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// - head length
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// - body length
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// - head data
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// - body data
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// - ETX: 0x29(41)
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//
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// 节省内存, 可被go runtime优化为writev操作
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func frame(head []byte, body []byte) net.Buffers {
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buffers := make(net.Buffers, 4)
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// buffer0 format:
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// - STX
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// - head length
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// - body length
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buffer0 := make([]byte, 9)
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buffer0[0] = 0x28
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binary.BigEndian.PutUint32(buffer0[1:], uint32(len(head)))
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binary.BigEndian.PutUint32(buffer0[5:], uint32(len(body)))
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buffers[0] = buffer0
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buffers[1] = head
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buffers[2] = body
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buffers[3] = etx
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return buffers
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}
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