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August 29, 2015 14:22
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Failing issue with geventwebsocket + newrelic instrumentation. run via `chmod +x run.py && ./run.py` and navigate to http://localhost:9191. After the first websocket connection, no more connections are allowed. Commenting out NR instrumentation restores expected behavior.
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| #!/usr/bin/env python2.7 | |
| # pip install newrelic gevent gevent-websocket flask | |
| # my versions: (2.50.0.39) (1.0.2) (0.9.3) (0.10.1) | |
| import newrelic.agent | |
| from geventwebsocket.handler import WebSocketHandler | |
| from gevent.pywsgi import WSGIServer | |
| from flask import Flask, request | |
| # Flask app | |
| app = Flask(__name__) | |
| # NewRelic (w/ generic config) | |
| newrelic.agent.initialize('newrelic.ini', 'Test') | |
| @app.route('/') | |
| def index(): | |
| return """ | |
| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <title>WebSocket Failure</title> | |
| <script type="text/javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script> | |
| </head> | |
| <body> | |
| <h1>WebSocket Failure</h1> | |
| <div id="conn_status">Not Connected</div> | |
| <p><button onclick="location.reload()">Reload</button></p> | |
| <p> | |
| Connected right? Click Refresh (closes the first websocket) and it's | |
| unable to connect. Restarting the server is required to connect again. | |
| </p> | |
| <script type="text/javascript"> | |
| $(function() { | |
| var ws = new WebSocket("ws://localhost:9191/chat/"); | |
| ws.onmessage = function(evt) { | |
| $("#placeholder").append('<p>' + evt.data + '</p>'); | |
| }; | |
| ws.onopen = function(evt) { | |
| $('#conn_status').html('<b>Connected</b>'); | |
| }; | |
| ws.onerror = function(evt) { | |
| $('#conn_status').html('<b>Error</b>'); | |
| }; | |
| ws.onclose = function(evt) { | |
| $('#conn_status').html('<b>Closed</b>'); | |
| }; | |
| }); | |
| </script> | |
| </body> | |
| </html> | |
| """ | |
| @app.route('/chat/') | |
| def api(): | |
| if request.environ.get('wsgi.websocket'): | |
| websocket = request.environ['wsgi.websocket'] | |
| while True: | |
| message = websocket.receive() | |
| websocket.send(message) | |
| return '' | |
| # Run server | |
| WSGIServer(('0.0.0.0', 9191), app, handler_class=WebSocketHandler).serve_forever() |
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