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<![CDATA[Spinlab - The resource hub - Scripts]]> https://spinlab.top/ Thu, 09 Apr 2026 08:47:28 +0000 MyBB <![CDATA[[Python3] Script to check SOCKS5 proxies for UDP support]]> https://spinlab.top/showthread.php?tid=6 Thu, 19 Mar 2026 13:36:09 +0000 RazoR]]> https://spinlab.top/showthread.php?tid=6 The script was made only for SOCKS5 protocol and worked very well in finding proxies that support UDP.
Also, one thing that I came across, UDP proxies are pretty rare and after parsing a list of over 500000 IPs, only a few had UDP support enabled (a list of the proxies found is here: https://github.com/Deiow/SOCKS5-Proxy-Ch...roxies.txt).

The script can be found on Github -> https://github.com/Deiow/SOCKS5-Proxy-Ch...ks5_udp.py

One more thing regarding this script, in order to validate that the UDP support is really working the script also sends a packet via the proxy to a destination address that must communicate via UDP.

Code:

# Target server for testing

TARGET_HOST = "ip"

TARGET_PORT = port

# UDP message

UDP_MESSAGE = 'Hello world!'

The test is done via function test_udp():

Code:

def test_udp(self) -> bool:

        """Send Source Engine query and wait for response"""

        try:

            # Build and send UDP packet

            udp_packet = self.build_udp_packet(UDP_MESSAGE)

            self.udp_sock.sendto(udp_packet, (self.udp_relay_ip, self.udp_relay_port))

            # Wait for response

            try:

                data, addr = self.udp_sock.recvfrom(4096)

                return True

            except socket.timeout:

                return False

        except Exception:

            return False

If this validation check is not ok, then the proxy is discarded and not saved into the output file.]]> The script was made only for SOCKS5 protocol and worked very well in finding proxies that support UDP.
Also, one thing that I came across, UDP proxies are pretty rare and after parsing a list of over 500000 IPs, only a few had UDP support enabled (a list of the proxies found is here: https://github.com/Deiow/SOCKS5-Proxy-Ch...roxies.txt).

The script can be found on Github -> https://github.com/Deiow/SOCKS5-Proxy-Ch...ks5_udp.py

One more thing regarding this script, in order to validate that the UDP support is really working the script also sends a packet via the proxy to a destination address that must communicate via UDP.

Code:

# Target server for testing

TARGET_HOST = "ip"

TARGET_PORT = port

# UDP message

UDP_MESSAGE = 'Hello world!'

The test is done via function test_udp():

Code:

def test_udp(self) -> bool:

        """Send Source Engine query and wait for response"""

        try:

            # Build and send UDP packet

            udp_packet = self.build_udp_packet(UDP_MESSAGE)

            self.udp_sock.sendto(udp_packet, (self.udp_relay_ip, self.udp_relay_port))

            # Wait for response

            try:

                data, addr = self.udp_sock.recvfrom(4096)

                return True

            except socket.timeout:

                return False

        except Exception:

            return False

If this validation check is not ok, then the proxy is discarded and not saved into the output file.]]>