34 lines
640 B
Go
34 lines
640 B
Go
package node
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import "unsafe"
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const (
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headerSize = 24
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streamData = 1
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streamRouting = 2
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)
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type header struct {
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Counter uint64 // Init with fasttime.Now() << 30 to ensure monotonic.
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SourceIP byte
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DestIP byte
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Forward byte
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Stream byte // See stream* constants.
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}
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func (hdr *header) Parse(nb []byte) {
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hdr.Counter = *(*uint64)(unsafe.Pointer(&nb[0]))
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hdr.SourceIP = nb[8]
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hdr.DestIP = nb[9]
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hdr.Forward = nb[10]
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hdr.Stream = nb[11]
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}
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func (hdr header) Marshal(buf []byte) {
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*(*uint64)(unsafe.Pointer(&buf[0])) = hdr.Counter
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buf[8] = hdr.SourceIP
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buf[9] = hdr.DestIP
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buf[10] = hdr.Forward
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buf[11] = hdr.Stream
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}
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