Question

我是网络套接字编程的新手......

我有以下JavaScript客户端代码：

var connection = new WebSocket('ws://localhost:8080/OmegaThings/registerdevice');

        connection.onopen = function () {              
            console.log("Socket has been opened state = " + connection.readyState);
            connection.send('Ping'); // Send the message 'Ping' to the server             
            connection.send('Websocket client');
        };

        console.log("Socket has been opened state = " + connection.readyState);
        connection.send('finish');

        // Log errors
        connection.onerror = function (error) {
        console.log('WebSocket Error ' + error);
        };

        // Log messages from the server
        connection.onmessage = function (e) {
        console.log('Server: ' + e.data);
        };

Java端点：

@ServerEndpoint("/registerdevice") 
public class RegisterDeviceEndPoint 
{
    private static final Logger LOG = Logger.getLogger(RegisterDeviceEndPoint.class.getName());

    @OnOpen  
    public void connectionOpened() 
    {    
        LOG.log(Level.INFO, "******************connection opened**************");
    }

    @OnMessage  
    public synchronized void processMessage(Session session, String message) 
    {    
        LOG.log(Level.INFO, "received message: {0}", message);
    }

   @OnClose  
   public void connectionClosed() 
   {    
       LOG.log(Level.INFO, "connection closed");  
   }
}

在firefox控制台上我得到了以下输出：

"Socket has been opened state = 1"
InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable
"Socket has been opened state = 0"

在GlassFish服务器日志上的

我得到了“ping”和“Websocket客户端”，但是在onopen事件退出（不确定）之后连接关闭，因此，最后一个单词“finish”没有出现在日志和错误上发生。

我想知道我的代码是否正确？是什么导致错误？ javascript代码，GlassFish服务器配置还是java端点代码？

Answer 1

尝试更改glassfish 8080端口，例如：8887，或确保您的防病毒/其他应用程序未使用端口80，我以前曾经历过使用端口80的防病毒软件阻止我的服务器websocket。

Websocket连接自动关闭？

1 个答案: