Added websocket multi-user chat example for Luca Zago's question.

2010-08-13 11:45:56 -07:00
parent 74d1ceaa06
commit a462dd4dbc
3 changed files with 78 additions and 0 deletions
--- a/doc/examples.rst
+++ b/doc/examples.rst
@@ -94,3 +94,13 @@ This exercises some of the features of the websocket server
 implementation.

 .. literalinclude:: ../examples/websocket.py
+
+.. _websocket_chat_example:
+
+Websocket Multi-User Chat Example
+--------------------------
+``examples/websocket_chat.py``
+
+This is a mashup of the websocket example and the multi-user chat example, showing how you can do the same sorts of things with websockets that you can do with regular sockets.
+
+.. literalinclude:: ../examples/websocket_chat.py
--- a/examples/websocket_chat.html
+++ b/examples/websocket_chat.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+<head>
+<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
+<script>
+window.onload = function() {
+  var data = {};
+  var s = new WebSocket("ws://127.0.0.1:7000/chat");
+  s.onopen = function() {
+    s.send('New participant joined');
+  };
+  s.onmessage = function(e) {
+    $("#chat").append("<div>" + e.data + "</div>");
+  };
+  $('#chatform').submit(function (evt) {
+    var line = $('#chatform [type=text]').val()
+    $('#chatform [type=text]').val('')
+    s.send(line);
+    return false;
+  });
+};
+</script>
+</head>
+<body>
+<h3>Chat!</h3>
+<p>(Only tested in Chrome)</p>
+<div id="chat" style="width: 60em; height: 20em; overflow:auto; border: 1px solid black">
+</div>
+<form id="chatform">
+<input type="text" />
+<input type="submit" />
+</form>
+</body>
+</html>
--- a/examples/websocket_chat.py
+++ b/examples/websocket_chat.py
@@ -0,0 +1,34 @@
+import eventlet
+from eventlet import wsgi
+from eventlet import websocket
+
+participants = set()
+
+@websocket.WebSocketWSGI
+def handle(ws):
+    participants.add(ws)
+    try:
+        while True:
+            m = ws.wait()
+            if m is None:
+                break
+            for p in participants:
+                p.send(m)
+    finally:
+        participants.remove(ws)
+                  
+def dispatch(environ, start_response):
+    """Resolves to the web page or the websocket depending on the path."""
+    if environ['PATH_INFO'] == '/chat':
+        return handle(environ, start_response)
+    else:
+        start_response('200 OK', [('content-type', 'text/html')])
+        return [open(os.path.join(
+                     os.path.dirname(__file__), 
+                     'websocket_chat.html')).read()]
+        
+if __name__ == "__main__":
+    # run an example app from the command line            
+    listener = eventlet.listen(('127.0.0.1', 7000))
+    print "\nVisit http://localhost:7000/ in your websocket-capable browser.\n"
+    wsgi.server(listener, dispatch)