Implement SOCKS5 UDP (ACL not yet integrated)

docs/socks5/udpchk.py

@@ -0,0 +1,19 @@
+import socks
+import socket
+
+
+def main():
+    s = socks.socksocket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.set_proxy(socks.SOCKS5, "127.0.0.1", 1080)
+    # Raw DNS request
+    req = b"\x12\x34\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x05\x62\x61\x69\x64\x75\x03\x63\x6f\x6d\x00\x00\x01\x00\x01"
+    s.sendto(req, ("8.8.8.8", 53))
+    (rsp, address) = s.recvfrom(4096)
+    if rsp[0] == req[0] and rsp[1] == req[1]:
+        print("UDP check passed")
+    else:
+        print("Invalid response")
+
+
+if __name__ == "__main__":
+    main()