61 lines
1.2 KiB
Go
61 lines
1.2 KiB
Go
package outbound
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import (
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"context"
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"net"
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"github.com/Dreamacro/clash/component/dialer"
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"github.com/Dreamacro/clash/component/resolver"
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C "github.com/Dreamacro/clash/constant"
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)
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type Direct struct {
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*Base
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}
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func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
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address := net.JoinHostPort(metadata.Host, metadata.DstPort)
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if metadata.DstIP != nil {
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address = net.JoinHostPort(metadata.DstIP.String(), metadata.DstPort)
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}
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c, err := dialer.DialContext(ctx, "tcp", address)
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if err != nil {
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return nil, err
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}
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tcpKeepAlive(c)
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return NewConn(c, d), nil
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}
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func (d *Direct) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
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pc, err := dialer.ListenPacket("udp", "")
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if err != nil {
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return nil, err
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}
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return newPacketConn(&directPacketConn{pc}, d), nil
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}
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type directPacketConn struct {
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net.PacketConn
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}
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func (dp *directPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) {
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if !metadata.Resolved() {
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ip, err := resolver.ResolveIP(metadata.Host)
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if err != nil {
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return 0, err
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}
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metadata.DstIP = ip
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}
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return dp.WriteTo(p, metadata.UDPAddr())
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}
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func NewDirect() *Direct {
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return &Direct{
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Base: &Base{
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name: "DIRECT",
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tp: C.Direct,
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udp: true,
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},
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}
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}
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