Why is my emit not getting called?
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Published on 2012-11-11T18:24:57Z
Indexed on
2012/12/15
17:04 UTC
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Filed under:
coffeescript
|socket.io
The client and server connect just fine. For some reason the emit on my client is not firing correctly. I am trying to get the testEmit and testEmit2 working.
This is my server:
express = require 'express'
mongo = require 'mongodb'
app = express()
server = (require 'http').createServer(app)
io = (require 'socket.io').listen(server)
server.listen(8080)
app.use(express.static(__dirname + '/public'))
# db = new mongo.Db("documentsdb", new mongo.Server("localhost", 27017, auto_reconnect: true), {safe:true})
io.sockets.on 'connection', (socket) ->
console.log 'Socket.io is connected!'
#This returns an array of documents sorted via date by decreasing order. (Most recent documents first.)
socket.on 'loadRecentDocuments', ->
console.log 'Loading most recent documents.'
db.collection 'documents', (err, collection) ->
collection.find().sort(dateAdded: -1).toArray (err, documents) ->
#This emit is recieved at index.html where a javascript function sendDocuments manages the documents.
socket.emit 'sendDocuments', documents
return
#The index.html provides the code data from the search box via a javascript.
io.sockets.on 'findDocuments', (code) ->
#Returns an array of documents with the corresponding class code.
documentCodeToSearch = code
console.log 'Retreaving documents with code: ' + documentCodeToSearch
db.collection 'documents', (err, collection) ->
collection.find(code:documentCodeToSearch).toArray (err, documents) ->
socket.emit 'sendDocuments', documents
return
#Uploads a document to the server. documentData is sent via javascript from submit.html
io.sockets.on 'addDocument', (documentData) ->
console.log 'Adding document: ' + documentData
db.collection 'documents', (err, collection) ->
collection.insert documentData, safe: true
return
#Test socket.io
io.sockets.on 'testEmit', ->
console.log('Emit recieved.')
socket.emit 'testEmit2', 'caca'
return
app.listen 1337
console.log "Listening on port 1337..."
This is my client:
<!doctype HTML>
<html>
<head>
<title>ProjectShare</title>
<script src="http://localhost:8080/socket.io/socket.io.js"></script>
<script src = "http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
//Make sure DOM is ready before mucking around.
$(document).ready(function()
{
console.log('jQuery entered!');
var socket = io.connect('http://localhost:8080');
socket.emit('testEmit');
socket.on('testEmit2', function(data)
{
console.log('Emit recieved at browser.');
console.log(data);
});
console.log('jQuery exit.');
});
</script>
</head>
<body>
<ol>
<li><a href="index.html">ProjectShare</a></li>
<li><a href="guidelines.html">Guidelines</a></li>
<li><a href="upload.html">Upload</a></li>
<li>
<form>
<input type = "search" placeholder = "enter class code"/>
<input type = "submit" value = "Go"/>
</form>
</li>
</ol>
<ol id = "documentList">
</ol>
</body>
</html>
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