105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package transport
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import (
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"context"
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"crypto/tls"
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"fmt"
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"github.com/Dreamacro/clash/component/resolver"
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"github.com/Dreamacro/clash/transport/hysteria/conns/faketcp"
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"github.com/Dreamacro/clash/transport/hysteria/conns/udp"
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"github.com/Dreamacro/clash/transport/hysteria/conns/wechat"
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"github.com/Dreamacro/clash/transport/hysteria/obfs"
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"github.com/Dreamacro/clash/transport/hysteria/utils"
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"github.com/lucas-clemente/quic-go"
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"net"
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)
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type ClientTransport struct {
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Dialer *net.Dialer
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}
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func (ct *ClientTransport) quicPacketConn(proto string, server string, obfs obfs.Obfuscator, dialer PacketDialer) (net.PacketConn, error) {
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if len(proto) == 0 || proto == "udp" {
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conn, err := dialer.ListenPacket()
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if err != nil {
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return nil, err
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}
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if obfs != nil {
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oc := udp.NewObfsUDPConn(conn, obfs)
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return oc, nil
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} else {
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return conn, nil
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}
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} else if proto == "wechat-video" {
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conn, err := dialer.ListenPacket()
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if err != nil {
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return nil, err
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}
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if obfs != nil {
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oc := wechat.NewObfsWeChatUDPConn(conn, obfs)
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return oc, nil
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} else {
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return conn, nil
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}
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} else if proto == "faketcp" {
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var conn *faketcp.TCPConn
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conn, err := faketcp.Dial("tcp", server)
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if err != nil {
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return nil, err
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}
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if obfs != nil {
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oc := faketcp.NewObfsFakeTCPConn(conn, obfs)
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return oc, nil
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} else {
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return conn, nil
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}
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} else {
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return nil, fmt.Errorf("unsupported protocol: %s", proto)
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}
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}
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type PacketDialer interface {
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ListenPacket() (net.PacketConn, error)
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Context() context.Context
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}
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func (ct *ClientTransport) QUICDial(proto string, server string, tlsConfig *tls.Config, quicConfig *quic.Config, obfs obfs.Obfuscator, dialer PacketDialer) (quic.Connection, error) {
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ipStr, port, err := utils.SplitHostPort(server)
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if err != nil {
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return nil, err
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}
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ip, err := resolver.ResolveProxyServerHost(ipStr)
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if err != nil {
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return nil, err
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}
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serverUDPAddr := net.UDPAddr{
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IP: net.ParseIP(ip.String()),
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Port: int(port),
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}
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pktConn, err := ct.quicPacketConn(proto, serverUDPAddr.String(), obfs, dialer)
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if err != nil {
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return nil, err
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}
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qs, err := quic.DialContext(dialer.Context(), pktConn, &serverUDPAddr, server, tlsConfig, quicConfig)
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if err != nil {
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_ = pktConn.Close()
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return nil, err
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}
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return qs, nil
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}
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func (ct *ClientTransport) DialTCP(raddr *net.TCPAddr) (*net.TCPConn, error) {
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conn, err := ct.Dialer.Dial("tcp", raddr.String())
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if err != nil {
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return nil, err
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}
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return conn.(*net.TCPConn), nil
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}
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func (ct *ClientTransport) ListenUDP() (*net.UDPConn, error) {
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return net.ListenUDP("udp", nil)
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}
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