Added example tcp client python script

tcp.py

@@ -0,0 +1,89 @@
+from __future__ import print_function
+
+from socket import socket, AF_INET, SOCK_STREAM
+
+import json
+import time
+
+server = ('127.0.0.1', 2442)
+
+
+def from_message(content):
+    try:
+        return json.loads(content)
+    except ValueError:
+        return {}
+
+
+def to_message(typ, value='', params=None):
+    if params is None:
+        params = {}
+    return json.dumps({'type': typ, 'value': value, 'params': params})
+
+
+class Client(object):
+    first = True
+    def process(self, message):
+        typ = message.get('type', '')
+        value = message.get('value', '')
+        params = message.get('params', {})
+        if not typ:
+            return
+
+        print('->', typ)
+
+        if value:
+            print('-> value', value)
+
+        if params:
+            print('-> params: ', params)
+
+
+    def send(self, *args, **kwargs):
+        params = kwargs.get('params', {})
+        if '_ID' not in params:
+            params['_ID'] = '{}'.format(int(time.time()*1000))
+            kwargs['params'] = params
+        message = to_message(*args, **kwargs)
+        print('outgoing message:', message)
+        self.sock.send(message + '\n') # remember to send the newline at the end :)
+    
+    def connect(self):
+        print('connecting to', ':'.join(map(str, server)))
+        self.sock = socket(AF_INET, SOCK_STREAM)
+        self.sock.connect(server)
+        self.connected = True
+        try:
+            # send a simple example query after connected
+            self.send("STATION.GET_STATUS")
+
+            while self.connected:
+                content = self.sock.recv(65500)
+                if not content:
+                    break
+                print('incoming message')
+
+                try:
+                    message = json.loads(content)
+                except ValueError:
+                    message = {}
+
+                if not message:
+                    continue
+
+                self.process(message)
+
+        finally:
+            self.sock.close()
+
+    def close(self):
+        self.connected = False
+
+
+
+def main():
+    s = Client()
+    s.connect()
+
+if __name__ == '__main__':
+    main()