I am trying to implement HTML5 web socket using Netbeans and Apache server..
the implementation is working fine in my laptop but when i am trying to access the same program on other machines connected in LAN using IP address ...i get the error "connection closed" in other machine.
here is my index.html file :
<!DOCTYPE html>
<html>
<head>
<title>Echo Chamber</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width">
</head>
<body>
<center>
<div>
<input type="text" id="messageinput"/>
</div>
<br>
<div>
<button type="button" onclick="openSocket();" >Open</button>
<button type="button" onclick="send();" >Send</button>
<button type="button" onclick="closeSocket();" >Close</button>
</div>
<br>
<hr>
<br>
<!-- Server responses get written here -->
<div id="messages"></div>
</center>
<!-- Script to utilise the WebSocket -->
<script type="text/javascript">
var webSocket;
var messages = document.getElementById("messages");
function openSocket(){
// Ensures only one connection is open at a time
if(webSocket !== undefined && webSocket.readyState !== WebSocket.CLOSED){
writeResponse("WebSocket is already opened.");
return;
}
// Create a new instance of the websocket
webSocket = new WebSocket("ws://localhost:8080/HTML_5_Socket_Appache/echo");
/**
* Binds functions to the listeners for the websocket.
*/
webSocket.onopen = function(event){
// For reasons I can't determine, onopen gets called twice
// and the first time event.data is undefined.
// Leave a comment if you know the answer.
if(event.data === undefined)
return;
writeResponse(event.data);
};
webSocket.onmessage = function(event){
writeResponse(event.data);
};
webSocket.onclose = function(event){
writeResponse("Connection closed");
};
}
/**
* Sends the value of the text input to the server
*/
function send(){
var text = document.getElementById("messageinput").value;
webSocket.send(text);
}
function closeSocket(){
webSocket.close();
}
function writeResponse(text){
messages.innerHTML += "<br/>" + text;
}
</script>
</body>
</html>
and here is my java file :
import java.io.IOException; import javax.websocket.OnClose; import javax.websocket.OnMessage; import javax.websocket.OnOpen; import javax.websocket.Session; import javax.websocket.server.ServerEndpoint; /** * @ServerEndpoint gives the relative name for the end point * This will be accessed via ws://localhost:8080/EchoChamber/echo * Where "localhost" is the address of the host, * "EchoChamber" is the name of the package * and "echo" is the address to access this class from the server */ @ServerEndpoint("/echo") public class EchoServer { /** * @OnOpen allows us to intercept the creation of a new session. * The session class allows us to send data to the user. * In the method onOpen, we'll let the user know that the handshake was * successful. */ @OnOpen public void onOpen(Session session){ System.out.println(session.getId() + " has opened a connection"); try { session.getBasicRemote().sendText("Connection Established"); } catch (IOException ex) { ex.printStackTrace(); } } /** * When a user sends a message to the server, this method will intercept the message * and allow us to react to it. For now the message is read as a String. */ @OnMessage public void onMessage(String message, Session session){ System.out.println("Message from " + session.getId() + ": " + message); try { session.getBasicRemote().sendText(message); } catch (IOException ex) { ex.printStackTrace(); } } /** * The user closes the connection. * * Note: you can't send messages to the client from this method */ @OnClose public void onClose(Session session){ System.out.println("Session " +session.getId()+" has ended"); } }
please help me as to where i am getting wrong which prevents the code to run only in my machine and no other machines connected in the network.
