mirror of
https://github.com/net-byte/vtun
synced 2024-03-14 10:50:03 +08:00
61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
package netutil
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import (
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"context"
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"log"
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"net"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"github.com/gobwas/ws"
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"github.com/net-byte/vtun/common/config"
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"github.com/songgao/water/waterutil"
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)
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func GetAddr(b []byte) (srcAddr string, dstAddr string) {
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defer func() {
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if err := recover(); err != nil {
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log.Printf("failed to get addr:%v", err)
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srcAddr = ""
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dstAddr = ""
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}
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}()
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if waterutil.IPv4Protocol(b) == waterutil.TCP || waterutil.IPv4Protocol(b) == waterutil.UDP {
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srcIp := waterutil.IPv4Source(b)
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dstIp := waterutil.IPv4Destination(b)
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srcPort := waterutil.IPv4SourcePort(b)
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dstPort := waterutil.IPv4DestinationPort(b)
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src := strings.Join([]string{srcIp.To4().String(), strconv.FormatUint(uint64(srcPort), 10)}, ":")
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dst := strings.Join([]string{dstIp.To4().String(), strconv.FormatUint(uint64(dstPort), 10)}, ":")
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//log.Printf("%s->%v", src, dst)
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return src, dst
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} else if waterutil.IPv4Protocol(b) == waterutil.ICMP {
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srcIp := waterutil.IPv4Source(b)
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dstIp := waterutil.IPv4Destination(b)
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return srcIp.To4().String(), dstIp.To4().String()
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}
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return "", ""
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}
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func ConnectServer(config config.Config) net.Conn {
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scheme := "ws"
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if config.Protocol == "wss" {
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scheme = "wss"
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}
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u := url.URL{Scheme: scheme, Host: config.ServerAddr, Path: "/way-to-freedom"}
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header := make(http.Header)
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header.Set("user-agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36")
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header.Set("key", config.Key)
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dialer := ws.Dialer{
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Header: ws.HandshakeHeaderHTTP(header),
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}
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c, _, _, err := dialer.Dial(context.Background(), u.String())
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if err != nil {
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log.Printf("[client] failed to dial websocket %s %v", u.String(), err)
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return nil
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}
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return c
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}
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