Created
February 27, 2013 12:46
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Experiment with Websockets, MQTT (Mosquitto)
uses PyWebsocket
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| import mosquitto | |
| def on_connect(mosq, userdata, rc): | |
| userdata._logger.debug("***CONN "+str(rc)) | |
| def on_subscribe(mosq, userdata, mid, granted_qos): | |
| userdata._logger.debug("Subscribed: "+str(mid)+" "+str(granted_qos)) | |
| def on_message(mosq, userdata, msg): | |
| # print(msg.topic+" "+str(msg.qos)+" "+str(msg.payload)) | |
| userdata._logger.debug('+++++ MQTT: %s' % str(msg.payload)) | |
| userdata.ws_stream.send_message(str(msg.payload), binary=False) | |
| def web_socket_do_extra_handshake(request): | |
| # This example handler accepts any request. See origin_check_wsh.py for how | |
| # to reject access from untrusted scripts based on origin value. | |
| pass # Always accept. | |
| def web_socket_transfer_data(request): | |
| mqttc = mosquitto.Mosquitto('ws-cli1', clean_session=True, userdata=request) | |
| mqttc.on_connect = on_connect | |
| mqttc.on_message = on_message | |
| mqttc.on_subscribe = on_subscribe | |
| mqttc.connect("hippo", 1883, 60) | |
| mqttc.subscribe("twitter/#", 0) | |
| while True: | |
| rc = mqttc.loop() |
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| <html><head><title>WS demo</title> | |
| <script src="jquery-1.3.2.min.js"></script> | |
| <script> | |
| $(document).ready(function(){ | |
| var ws; | |
| if ("WebSocket" in window) { | |
| ws = new WebSocket("ws://localhost:12345/jp"); | |
| ws.onopen = function() { | |
| // ws.send("tesht"); | |
| }; | |
| ws.onmessage = function (evt) { | |
| var data = evt.data; | |
| $("#tweet").html(data); | |
| }; | |
| ws.onclose = function() { | |
| // | |
| }; | |
| } else { | |
| alert("You have no web sockets"); | |
| }; | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <h1>WStweetsch</h1> | |
| <fieldset> | |
| <legend>Status</legend> | |
| <div id="tweet">...</div> | |
| </fieldset> | |
| </body> | |
| </html> |
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| python mod_pywebsocket/standalone.py -p 12345 --allow-draft75 -d example --log-level debug |
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| PyWebsocket http://code.google.com/p/pywebsocket/ | |
| HTML from http://pedroassuncao.com/blog/2009/12/18/websockets-tutorialexample-with-pywebsocket/ |
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