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Code Issues Releases Wiki Activity

Enable UDP in Socks proxy

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This commit is contained in:
V2Ray 2015-10-04 00:21:06 +02:00
parent ddad439614
commit 838cb8950a
3 changed files with 54 additions and 3 deletions
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8
common/net/timed_io.go
View File

@ -28,3 +28,11 @@ func (reader *TimeOutReader) Read(p []byte) (n int, err error) {
reader.connection.SetReadDeadline(emptyTime)
return
}
func (reader *TimeOutReader) GetTimeOut() int {
return reader.timeout
}
func (reader *TimeOutReader) SetTimeOut(value int) {
reader.timeout = value
}

40
proxy/socks/socks.go
View File

@ -76,7 +76,7 @@ func (server *SocksServer) HandleConnection(connection net.Conn) error {
}
}
func (server *SocksServer) handleSocks5(reader io.Reader, writer io.Writer, auth protocol.Socks5AuthenticationRequest) error {
func (server *SocksServer) handleSocks5(reader *v2net.TimeOutReader, writer io.Writer, auth protocol.Socks5AuthenticationRequest) error {
expectedAuthMethod := protocol.AuthNotRequired
if server.config.IsPassword() {
expectedAuthMethod = protocol.AuthUserPass
@ -130,7 +130,11 @@ func (server *SocksServer) handleSocks5(reader io.Reader, writer io.Writer, auth
response := protocol.NewSocks5Response()
if request.Command == protocol.CmdBind || (!server.config.UDPEnabled && request.Command == protocol.CmdUdpAssociate) {
if request.Command == protocol.CmdUdpAssociate && server.config.UDPEnabled {
return server.handleUDP(reader, writer)
}
if request.Command == protocol.CmdBind || request.Command == protocol.CmdUdpAssociate {
response := protocol.NewSocks5Response()
response.Error = protocol.ErrorCommandNotSupported
err = protocol.WriteResponse(writer, response)
@ -143,6 +147,7 @@ func (server *SocksServer) handleSocks5(reader io.Reader, writer io.Writer, auth
}
response.Error = protocol.ErrorSuccess
response.Port = request.Port
response.AddrType = request.AddrType
switch response.AddrType {
@ -170,6 +175,37 @@ func (server *SocksServer) handleSocks5(reader io.Reader, writer io.Writer, auth
return nil
}
func (server *SocksServer) handleUDP(reader *v2net.TimeOutReader, writer io.Writer) error {
response := protocol.NewSocks5Response()
response.Error = protocol.ErrorSuccess
udpAddr := server.getUDPAddr()
response.Port = udpAddr.Port()
switch {
case udpAddr.IsIPv4():
response.AddrType = protocol.AddrTypeIPv4
copy(response.IPv4[:], udpAddr.IP())
case udpAddr.IsIPv6():
response.AddrType = protocol.AddrTypeIPv6
copy(response.IPv6[:], udpAddr.IP())
case udpAddr.IsDomain():
response.AddrType = protocol.AddrTypeDomain
response.Domain = udpAddr.Domain()
}
err := protocol.WriteResponse(writer, response)
if err != nil {
log.Error("Socks failed to write response: %v", err)
return err
}
reader.SetTimeOut(300) /* 5 minutes */
buffer := make([]byte, 1024)
reader.Read(buffer)
return nil
}
func (server *SocksServer) handleSocks4(reader io.Reader, writer io.Writer, auth protocol.Socks4AuthenticationRequest) error {
result := protocol.Socks4RequestGranted
if auth.Command == protocol.CmdBind {

9
proxy/socks/udp.go
View File

@ -12,6 +12,8 @@ const (
bufferSize = 2 * 1024
)
var udpAddress v2net.Address
func (server *SocksServer) ListenUDP(port uint16) error {
addr := &net.UDPAddr{
IP: net.IP{0, 0, 0, 0},
@ -23,14 +25,19 @@ func (server *SocksServer) ListenUDP(port uint16) error {
log.Error("Socks failed to listen UDP on port %d: %v", port, err)
return err
}
udpAddress = v2net.IPAddress([]byte{127, 0, 0, 1}, port)
go server.AcceptPackets(conn)
return nil
}
func (server *SocksServer) getUDPAddr() v2net.Address {
return udpAddress
}
func (server *SocksServer) AcceptPackets(conn *net.UDPConn) error {
for {
buffer := make([]byte, 0, bufferSize)
buffer := make([]byte, bufferSize)
nBytes, addr, err := conn.ReadFromUDP(buffer)
if err != nil {
log.Error("Socks failed to read UDP packets: %v", err)