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53 lines
1006 B
53 lines
1006 B
package kcp
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import (
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"errors"
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"math/rand"
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"net"
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v2net "github.com/v2ray/v2ray-core/common/net"
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"github.com/v2ray/v2ray-core/transport/internet"
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)
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var (
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ErrUnknownDestination = errors.New("Destination IP can't be resolved.")
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)
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func DialKCP(src v2net.Address, dest v2net.Destination) (internet.Connection, error) {
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var ip net.IP
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if dest.Address().IsDomain() {
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ips, err := net.LookupIP(dest.Address().Domain())
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if err != nil {
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return nil, err
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}
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if len(ips) == 0 {
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return nil, ErrUnknownDestination
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}
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ip = ips[0]
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} else {
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ip = dest.Address().IP()
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}
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udpAddr := &net.UDPAddr{
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IP: ip,
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Port: int(dest.Port()),
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}
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udpConn, err := net.ListenUDP("udp", &net.UDPAddr{})
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if err != nil {
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return nil, err
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}
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cpip, _ := NewNoneBlockCrypt(nil)
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session := newUDPSession(rand.Uint32(), nil, udpConn, udpAddr, cpip)
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kcvn := &KCPVconn{hc: session}
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err = kcvn.ApplyConf()
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if err != nil {
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return nil, err
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}
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return kcvn, nil
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}
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func init() {
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internet.KCPDialer = DialKCP
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}
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