add simple multiclient websocket server

Makefile

@@ -0,0 +1,5 @@
+debug:
+	flask --app secmsg run --debug
+
+prod:
+	gunicorn -b :5000 --threads 128 secmsg:app

secmsg/__init__.py

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+import os
+
+from flask import Flask
+from flask_sock import Sock
+
+app = Flask(__name__, instance_relative_config=True)
+sock = Sock(app)
+clients = []
+
+@app.route('/')
+def index():
+    return "test"
+
+@sock.route('/client')
+def sock_handler(ws):
+    clients.append(ws)
+
+    try:
+        while True:
+            data = ws.receive()
+            for client in clients:
+                if not client is ws:
+                    client.send(data)
+
+    except simple_websocket.ws.ConnectionClosed:
+        clients.remove(ws)
+