Hi, I have just started learning nodejs. And i am using socket.io modules. I have write code where one user can send message to another specific user.. but my code is not working, idk why ?
Here is my client side script -->
var mysql = require("mysql");
var fs = require('fs');
var httpe = require('http');
var io = require('socket.io').listen(httpe);
// First you need to create a connection to the db
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "",
database:"msg"
});
//connect connection
con.connect(function(err){
if(err){
console.log(err);
con.end;
return;
}else
console.log('Connection established');
});
httpe.createServer(function (req, res) {
fs.readFile(__dirname + '/index.html',
function (err, data) {
if (err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
/* res.writeHead(200, {'content-type':'text/html'});
res.write("hi there! Test Test");
res.end(data);*/
});
}).listen(3000);
io.sockets.on('connection', function (socket) {
socket.on('add-user', function(data){
clients[data.username] = {
"socket": socket.id
};
console.log(clients[data.username]);
});
socket.on('private-message', function(data){
console.log("Sending: " + data.content + " to " + data.username);
if (clients[data.username]){
io.sockets.connected[clients[data.username].socket].emit("add-message", data);
} else {
console.log("User does not exist: " + data.username);
}
});
//Removing the socket on disconnect
socket.on('disconnect', function() {
for(var name in clients) {
if(clients[name].socket === socket.id) {
delete clients[name];
break;
}
}
})
});
Hree is cliente side script-->
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Socket.io Demo</title>
<style>
.chat-form { display: none; }
</style>
</head>
<body>
<form class="username-form" method="post" action="">
<input type="text" />
<input type="submit" value="Join" />
</form>
<form class="chat-form" method="post" action="">
<div>Hey there, <span id="username">Guest</span></div>
<label>To:</label> <input id="recipient" /><br />
<label>Message: </label><br />
<textarea id="message"></textarea>
<input type="submit" value="Send" />
<ul id="messages">
</ul>
</form>
<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script>
var socket = io.connect('http://localhost');
// Add a username
$(".username-form").on("submit", function(){
// Tell the server about it
var username = $(this).children("input").val();
socket.emit("add-user", {"username": username});
// Remove this form and show the chat form
$(this).remove();
$("#username").text(username);
chat_form.show();
return false;
});
// Chat form
var chat_form = $(".chat-form");
chat_form.on("submit", function(){
// Send the message to the server
socket.emit("private-message", {
"username": $(this).find("input:first").val(),
"content": $(this).find("textarea").val()
});
// Empty the form
$(this).find("input:first, textarea").val('');
return false;
});
// Whenever we receieve a message, append it to the <ul>
socket.on("add-message", function(data){
$("#messages").append($("<li>", {
"text": data.content
}));
});
</script>
</body>
</html>
