feat(example): Add socket ipv4 and ipv6 example

Commit ID: b650d19c

examples/protocols/sockets/scripts/tcpserver.py

@@ -0,0 +1,53 @@
+# This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+# Unless required by applicable law or agreed to in writing, this
+# software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+# CONDITIONS OF ANY KIND, either express or implied.
+
+# -*- coding: utf-8 -*-
+
+import socket
+import sys
+
+# -----------  Config  ---------- 
+IP_VERSION = 'IPv4'
+PORT = 3333;
+# -------------------------------
+
+if IP_VERSION == 'IPv4':
+    family_addr = socket.AF_INET
+elif IP_VERSION == 'IPv6':
+    family_addr = socket.AF_INET6
+else:
+    print('IP_VERSION must be IPv4 or IPv6')
+    sys.exit(1)
+
+
+try:
+    sock = socket.socket(family_addr, socket.SOCK_STREAM)
+except socket.error as msg:
+    print('Error: ' + str(msg[0]) + ': ' + msg[1])
+    sys.exit(1)
+
+print('Socket created')
+    
+try:
+    sock.bind(('', PORT))
+    print('Socket binded')
+    sock.listen(1)
+    print('Socket listening')
+    conn, addr = sock.accept()
+    print('Connected by', addr)
+except socket.error as msg:
+    print('Error: ' + str(msg[0]) + ': ' + msg[1])
+    sock.close()
+    sys.exit(1)
+
+while True:
+    data = conn.recv(128)
+    if not data: break
+    data = data.decode()
+    print('Received data: ' + data)
+    reply = 'OK: ' + data
+    conn.send(reply.encode())
+conn.close()