Error code 200 and 404 websocket on tomcat 7.0.53
Question
I am using tomcat 7.0.53 to make websocket code and keep getting error code 200 when I use a / for the websocket location and error code 404 when I use /echo for the websocket location. I have no clue why it is not working. Below is the code for my programs html and java side.
Java side:
package wsapp;
import java.io.IOException;
import java.util.ArrayList;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
@ServerEndpoint(value = "/echo")
public class WsChat{
//notice:not thread-safe
private static ArrayList<Session> sessionList = new ArrayList<Session>();
@OnOpen
public void onOpen(Session session){
try{
sessionList.add(session);
//asynchronous communication
session.getBasicRemote().sendText("Hello!");
}catch(IOException e){}
}
@OnClose
public void onClose(Session session){
sessionList.remove(session);
}
@OnMessage
public void onMessage(String msg){
try{
for(Session session : sessionList){
//asynchronous communication
session.getBasicRemote().sendText(msg);
}
}catch(IOException e){}
}
}
HTML Side:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Tomcat WebSocket Chat</title>
<script>
var ws = new WebSocket("ws://localhost:8080/echo");
ws.onopen = function(){
};
ws.onmessage = function(message){
document.getElementById("chatlog").textContent += message.data + "\n";
};
function postToServer(){
ws.send(document.getElementById("msg").value);
document.getElementById("msg").value = "";
}
function closeConnect(){
ws.close();
}
</script>
</head>
<body>
<textarea id="chatlog" readonly></textarea><br/>
<input id="msg" type="text" />
<button type="submit" id="sendButton" onClick="postToServer()">Send!</button>
<button type="submit" id="sendButton" onClick="closeConnect()">End</button>
</body>
1 answers
solution1
0 ACCPTED 2014-08-14 14:01:12
The URL for the website was http://localhost:8080/websocket/ . However in the code
var ws = new WebSocket("ws://localhost:8080/echo");
is being used instead of the correct way which is var ws = new WebSocket("ws://localhost:8080/websocket/echo"); . After that is done the handshake and communicating with the sockets works correctly.
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