Created
February 16, 2019 00:17
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Web Socket Example
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| # Copy of http://stackoverflow.com/a/20104705 | |
| from flask import Flask, render_template | |
| from flask_sockets import Sockets | |
| import datetime | |
| import time | |
| app = Flask(__name__) | |
| sockets = Sockets(app) | |
| @sockets.route('/echo') | |
| def echo_socket(ws): | |
| while True: | |
| #message = ws.receive() | |
| ws.send(str(datetime.datetime.now())) | |
| time.sleep(.1) | |
| @app.route('/') | |
| def hello(): | |
| return 'Hello World!' | |
| @app.route('/echo_test', methods=['GET']) | |
| def echo_test(): | |
| return render_template('example.html') | |
| if __name__ == '__main__': | |
| app.run() | |
| # Start with gunicorn -k flask_sockets.worker app:app |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| </head> | |
| <p id="test">Testing</p> | |
| <script type="text/javascript"> | |
| var ws = new WebSocket("ws://localhost:8000/echo"); | |
| ws.onopen = function() { | |
| ws.send("socket open"); | |
| }; | |
| ws.onclose = function(evt) { | |
| alert("socket closed"); | |
| }; | |
| ws.onmessage = function(evt) { | |
| document.getElementById("test").innerHTML = evt.data; | |
| }; | |
| </script> | |
| </html> |
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