Java 服务器中的安全 WebSocket (WSS) 和 javascript 中的客户端

Question

WebSocket与

wss://localhost:8025/websockets/server

的连接失败：WebSocket打开握手超时

请帮助我做错了什么！

---

服务器端代码：

启动服务器

Server server = new Server("localhost", 8025, "/websockets", WebSocketServerEndpoint.class);
server.start();

@ServerEndpoint(value = "/server")
public class WebSocketServerEndpoint {
    @OnOpen
    public void onOpen(Session session) throws Exception 
    {
        Logger.write("communication_clientservice", "WebSocket >> Connected ... " + session.getId());
    }

    @OnMessage
    public void onMessage(String message, Session session) throws IOException 
    {
        Logger.write("communication_clientservice_websocket", "UI to Websocket >> command received at Websocket >> " + message);
    }

    @OnClose
    public void onClose(Session session, CloseReason closeReason) throws IOException 
    {
        Logger.write("communication_clientservice_websocket", "WebSocket >>"+ String.format("Session %s closed because of %s", session.getId(), closeReason));   
        session.close();
    }
}

---

客户端 客户端连接服务器

 var ws = new WebSocket("wss://localhost:8025/websockets/server");             
               ws.maxTimeout = 5 * 1000;
               ws.onopen = function()
               {
                  // Web Socket is connected, send data using send()
                  ws.send("{\"from\":\"shabeer\"}");
                  //alert("Message is sent...");
                  var elem = document.getElementById("receivedmsg");
                  elem.innerHTML = "panic request send";
               };

               ws.onmessage = function (evt) 
               { 
                  var received_msg = evt;
                  //alert("Message is received..." + received_msg);
                  var elem = document.getElementById("receivedmsg");
                  elem.innerHTML = "Response received : " + received_msg;
               };

               ws.onclose = function()
               { 
                  // websocket is closed.
                  ///alert("Connection is closed..."); 
                  setTimeout(function(){WebSocketTest()}, 5000);
               };

---

Answer 1

Web Socket 服务器默认以 ws 开头（像 HTTP 一样不安全）。如果您需要 SSL (WSS)，则必须在您的服务器对象中显式设置。

如果您在客户端中使用以下 URL，它应该可以工作。

wss://localhost:8025/ to ws://localhost:8025/