working examples

server.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+from re import T
+import socket
+import time
+
+server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
+
+# Enable port reusage so we will be able to run multiple clients and servers on single (host, port).
+# Do not use socket.SO_REUSEADDR except you using linux(kernel<3.9): goto https://stackoverflow.com/questions/14388706/how-do-so-reuseaddr-and-so-reuseport-differ for more information.
+# For linux hosts all sockets that want to share the same address and port combination must belong to processes that share the same effective user ID!
+# So, on linux(kernel>=3.9) you have to run multiple servers and clients under one user to share the same (host, port).
+# Thanks to @stevenreddie
+# server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
+
+# Enable broadcasting mode
+server.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+server.bind(("192.168.1.101", 5555))
+# Set a timeout so the socket does not block
+# indefinitely when trying to receive data.
+server.settimeout(0.2)
+message = "count: "
+count = 0
+while True:
+    count = count + 1
+    # msg = message.join(str(count)).encode("utf8")
+    msg = f"{message} {count}".encode("utf8")
+    server.sendto(msg, ("255.255.255.255", 37020))
+    # print("message sent!", flush=True)
+    time.sleep(1)