66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
package node
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import (
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"sync/atomic"
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)
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func getRelayRoute() *peerRoute {
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if ip := relayIP.Load(); ip != nil {
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return routingTable[*ip].Load()
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}
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return nil
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}
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func _sendControlPacket(pkt interface{ Marshal([]byte) []byte }, route peerRoute, buf1, buf2 []byte) {
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buf := pkt.Marshal(buf2)
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h := header{
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StreamID: controlStreamID,
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Counter: atomic.AddUint64(&sendCounters[route.IP], 1),
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SourceIP: localIP,
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DestIP: route.IP,
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}
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buf = route.ControlCipher.Encrypt(h, buf, buf1)
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if route.Direct {
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_conn.WriteTo(buf, route.RemoteAddr)
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return
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}
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_relayPacket(route.IP, buf, buf2)
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}
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func _sendDataPacket(route *peerRoute, pkt, buf1, buf2 []byte) {
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h := header{
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StreamID: dataStreamID,
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Counter: atomic.AddUint64(&sendCounters[route.IP], 1),
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SourceIP: localIP,
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DestIP: route.IP,
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}
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enc := route.DataCipher.Encrypt(h, pkt, buf1)
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if route.Direct {
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_conn.WriteTo(enc, route.RemoteAddr)
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return
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}
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_relayPacket(route.IP, enc, buf2)
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}
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func _relayPacket(destIP byte, data, buf []byte) {
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relayRoute := getRelayRoute()
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if relayRoute == nil || !relayRoute.Up || !relayRoute.Relay {
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return
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}
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h := header{
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StreamID: dataStreamID,
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Counter: atomic.AddUint64(&sendCounters[relayRoute.IP], 1),
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SourceIP: localIP,
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DestIP: destIP,
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}
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enc := relayRoute.DataCipher.Encrypt(h, data, buf)
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_conn.WriteTo(enc, relayRoute.RemoteAddr)
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}
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