First commit

setup/sample-xapp/xapp_control.py

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+import socket
+
+
+# open control socket
+def open_control_socket(port: int):
+
+    print('Waiting for xApp connection on port ' + str(port))
+
+    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+    # host = socket.gethostname()
+    # bind to INADDR_ANY
+    server.bind(('', port))
+
+    server.listen(5)
+
+    control_sck, client_addr = server.accept()
+    print('xApp connected: ' + client_addr[0] + ':' + str(client_addr[1]))
+
+    return control_sck
+
+
+# send through socket
+def send_socket(socket, msg: str):
+    bytes_num = socket.send(msg.encode('utf-8'))
+    print('Socket sent ' + str(bytes_num) + ' bytes')
+
+
+# receive data from socker
+def receive_from_socket(socket) -> str:
+
+    ack = 'Indication ACK\n'
+
+    data = socket.recv(4096)
+
+    try:
+        data = data.decode('utf-8')
+    except UnicodeDecodeError:
+        return ''
+
+    if ack in data:
+        data = data[len(ack):]
+
+    if len(data) > 0:
+        # print("Received: ", str(data))
+
+        return data.strip()
+    else:
+        return ''
+