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Fix panic in illegal request

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Fangliding
2026-06-14 20:02:26 +08:00
parent da21a8f77f
commit adad7b201f
1 changed files with 5 additions and 2 deletions
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proxy/socks/protocol.go
+5 -2
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@@ -196,6 +196,9 @@ func (s *ServerSession) handshake5(nMethod byte, reader io.Reader, writer net.Co
var tempUDPConn *TempUDPConn var tempUDPConn *TempUDPConn
//nolint:gocritic // Use if else chain for clarity //nolint:gocritic // Use if else chain for clarity
if request.Command == protocol.RequestCommandUDP { if request.Command == protocol.RequestCommandUDP {
if request.Address.Family().IsDomain() {
return nil, nil, errors.New("domain name in UDP associate is illegal")
}
if s.config.Address != nil { if s.config.Address != nil {
// Use configured IP as remote address in the response to UDP Associate // Use configured IP as remote address in the response to UDP Associate
responseAddress = s.config.Address.AsAddress() responseAddress = s.config.Address.AsAddress()
@@ -212,8 +215,8 @@ func (s *ServerSession) handshake5(nMethod byte, reader io.Reader, writer net.Co
if request.Address.IP().IsUnspecified() { if request.Address.IP().IsUnspecified() {
expectedRemote.IP = writer.RemoteAddr().(*net.TCPAddr).IP // unix? expectedRemote.IP = writer.RemoteAddr().(*net.TCPAddr).IP // unix?
} else { } else {
expectedRemote.IP = request.Address.IP() // panic? expectedRemote.IP = request.Address.IP()
expectedRemote.Port = int(request.Port) // 0 is allowed expectedRemote.Port = int(request.Port) // 0 is allowed
} }
tempUDPConn = NewTempUDPConn(udpHub, writer, expectedRemote) tempUDPConn = NewTempUDPConn(udpHub, writer, expectedRemote)
} }