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@sahilalipuria
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Created May 5, 2016 10:11
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WebSocket Echo :python:twisted:txws:jquery:
/twistd.pid
/_trial_temp/
<!-- http://www.tavendo.de/autobahn/tutorial/echo.html -->
<html>
<head>
<script type="text/javascript">
window.onload = function() {
var ws_uri = "ws://localhost:8076";
if ("WebSocket" in window) {
webSocket = new WebSocket(ws_uri);
}
else {
// Firefox 7/8 currently prefixes the WebSocket object
webSocket = new MozWebSocket(ws_uri);
}
webSocket.onmessage = function(e) {
console.log("Got echo: " + e.data);
}
}
</script>
</head>
<body>
<h1>Autobahn WebSockets Echo Test</h1>
<button onclick='webSocket.send("Hello, world!");'>Send Hello</button>
</body>
</html>
<!doctype html>
<title>Send keys using websocket and echo the response</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js">
</script>
<script src="sendkeys.js"></script>
<input type=text id=entry value="type something">
<div id=output>Here you should see the typed text in UPPER case</div>
// send keys to websocket and echo the response
$(document).ready(function() {
// create websocket
if (! ("WebSocket" in window)) WebSocket = MozWebSocket; // firefox
var socket = new WebSocket("ws://localhost:8076");
// open the socket
socket.onopen = function(event) {
socket.send('connected');
// show server response
socket.onmessage = function(e) {
$("#output").text(e.data);
}
// for each typed key send #entry's text to server
$("#entry").keyup(function (e) {
socket.send($("#entry").attr("value"));
});
}
});
# -*- test-case-name: test_streamer -*-
"""WebSocket Echo.
Install: pip install twisted txws
Run: twistd -ny streamer.py
Visit http://localhost:8080/
"""
from twisted.application import strports # pip install twisted
from twisted.application.service import Application
from twisted.internet.protocol import Factory, Protocol
from twisted.python import log
from txws import WebSocketFactory # pip install txws
class EchoUpper(Protocol):
"""Echo uppercased."""
def dataReceived(self, data):
log.msg("Got %r" % (data,))
self.transport.write(data.upper())
application = Application("ws-streamer")
echofactory = Factory()
echofactory.protocol = EchoUpper # use Factory.buildProtocol()
service = strports.service("tcp:8076:interface=127.0.0.1",
WebSocketFactory(echofactory))
service.setServiceParent(application)
from twisted.web.server import Site
from twisted.web.static import File
resource = File('.') # serve current directory
webservice = strports.service("tcp:8080:interface=127.0.0.1",
Site(resource))
webservice.setServiceParent(application)
from twisted.test import proto_helpers
from twisted.trial import unittest
from streamer import EchoUpper
class EchoUpperTestCase(unittest.TestCase):
def setUp(self):
self.proto = EchoUpper()
self.tr = proto_helpers.StringTransport()
self.proto.makeConnection(self.tr)
def test_dataReceived(self):
self.proto.dataReceived('abc')
self.assertEqual(self.tr.value(), 'ABC')
<!DOCTYPE html>
<!-- http://websocket.org/echo.html -->
<meta charset="utf-8" />
<title>WebSocket Test</title>
<script language="javascript" type="text/javascript">
var wsUri = "ws://localhost:8076/";
var output;
function init()
{
output = document.getElementById("output");
testWebSocket();
}
function testWebSocket()
{
if (! ("WebSocket" in window)) WebSocket = MozWebSocket; // firefox
websocket = new WebSocket(wsUri);
websocket.onopen = function(evt) { onOpen(evt) };
websocket.onclose = function(evt) { onClose(evt) };
websocket.onmessage = function(evt) { onMessage(evt) };
websocket.onerror = function(evt) { onError(evt) };
}
function onOpen(evt)
{
writeToScreen("CONNECTED");
doSend("WebSocket rocks");
}
function onClose(evt)
{
writeToScreen("DISCONNECTED");
}
function onMessage(evt)
{
writeToScreen('<span style="color: blue;">RESPONSE: ' + evt.data+'</span>');
websocket.close();
}
function onError(evt)
{
writeToScreen('<span style="color: red;">ERROR:</span> ' + evt.data);
}
function doSend(message)
{
writeToScreen("SENT: " + message);
websocket.send(message);
}
function writeToScreen(message)
{
var pre = document.createElement("p");
pre.style.wordWrap = "break-word";
pre.innerHTML = message;
output.appendChild(pre);
}
window.addEventListener("load", init, false);
</script>
<h2>WebSocket Test</h2>
<div id="output"></div>
</html>
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