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@casualjim
Created January 14, 2011 10:19
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Scalatra Socket.IO example
package org.scalatra
import socketio.{SocketIOServlet}
class SocketIOExample extends SocketIOServlet {
// overriden because otherwise you need a trailing slash for the root url
// prefer the freedom with or without root.
override def requestPath = {
val p = (Option(request.getPathInfo) getOrElse "").trim
if(p.isEmpty) "/" else p
}
socketio { builder =>
builder.connecting { connection =>
println("Connecting client [%s]." format connection.id )
}
builder.onMessage { (connection, msg) =>
connection.send("ECHO: %s" format msg)
}
builder.disconnect { (connection, reason) =>
println("Client [%s] disconnected because of [%s]." format (connection.id, reason))
}
}
get("/?") {
<html>
<head>
<title>Socket.IO connection</title>
<script type="text/javascript" src="/socket.io/socket.io.js"></script>
</head>
<body>
<h1>Hello</h1>
<p>In a javascript console</p>
<pre>
var socket = new io.Socket("http://localhost:8080/socket.io");
socket.on('connect', { "function() { console.log('Connecting to socket') }" });
socket.on('message', { "function(m) { console.log(m.data); };" });
socket.send("hello scalatra");
// Some time passes
socket.close()
</pre>
</body>
</html>
}
}
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