Jetty 9使用安全连接时的WebSocket客户端问题

Question

我正在java应用程序中使用Jetty 9.4.18库编写WebSocket客户端。

我对WebSockets非常陌生，所以我开始使用Jetty文档中的两个示例类进行测试，连接到echo。websocket。组织机构

当我在没有SSL的情况下连接时，测试运行正常，但是如果连接到wss://echo.websocket.org时失败

我总是遇到同样的异常：

java.io.EOFException: HttpConnectionOverHTTP@50371e9d::DecryptedEndPoint@6dc65fc2{echo.websocket.org/174.129.224.73:443<->/192.168.1.34:60521,OPEN,fill=-,flush=C,to=226/0}
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.earlyEOF(HttpReceiverOverHTTP.java:338)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1551)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.shutdown(HttpReceiverOverHTTP.java:209)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:147)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:73)
    at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:133)
    at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:155)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:411)
    at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:305)
    at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:159)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
    at java.lang.Thread.run(Thread.java:748)

看起来服务器在没有响应握手请求的情况下关闭。

我知道SslContextFactory，但我的理解是，只有当您需要自己的信任库或密钥库时，或者在其他特殊情况下，才应该使用它。

还请注意，在一些失败的尝试之后，我从下载了另一个websocket实现https://github.com/TooTallNate/Java-WebSocket，并且它可以很好地与ws和wss一起工作，无需设置任何特定于SSL的内容。然而，对于这个项目，我必须使用Jetty。

我使用的代码正是Jetty文档中的示例https://www.eclipse.org/jetty/documentation/9.4.x/jetty-websocket-client-api.html

我所做的唯一更改是将onError方法添加到SimpleEchoSocket，这会转储完整的异常堆栈。

我错过了什么吗？

提前感谢！

Answer 1

不幸的是，websocket。org（和Kaazing主机/代理）目前存在一系列TLS问题，因此使用其公共服务器目前不是明智的选择。

这里有一个不同的演示，也使用了TLS和WebSocket，针对的是一个具有正确和健全的TLS/SSL实现的stackexchange服务器。

这是针对Jetty 9.4.18编写的。v20190429

package org.eclipse.jetty.demo;

import java.net.URI;
import java.util.concurrent.Future;

import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.util.component.LifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketClose;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketConnect;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketError;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
import org.eclipse.jetty.websocket.api.annotations.WebSocket;
import org.eclipse.jetty.websocket.client.WebSocketClient;

@WebSocket
public class SecureClientSocket
{
    private static final Logger LOG = Log.getLogger(SecureClientSocket.class);

    public static void main(String[] args)
    {
        String url = "wss://qa.sockets.stackexchange.com/";

        SslContextFactory ssl = new SslContextFactory.Client();
        ssl.setEndpointIdentificationAlgorithm("HTTPS");
        HttpClient http = new HttpClient(ssl);
        WebSocketClient client = new WebSocketClient(http);
        try
        {
            http.start();
            client.start();
            SecureClientSocket socket = new SecureClientSocket();
            Future<Session> fut = client.connect(socket, URI.create(url));
            Session session = fut.get();
            session.getRemote().sendString("Hello");
            session.getRemote().sendString("155-questions-active");
        }
        catch (Throwable t)
        {
            LOG.warn(t);
        }
        finally
        {
            stop(http);
            stop(client);
        }
    }

    private static void stop(LifeCycle lifeCycle)
    {
        try
        {
            lifeCycle.stop();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    @OnWebSocketConnect
    public void onConnect(Session sess)
    {
        LOG.info("onConnect({})", sess);
    }

    @OnWebSocketClose
    public void onClose(int statusCode, String reason)
    {
        LOG.info("onClose({}, {})", statusCode, reason);
    }

    @OnWebSocketError
    public void onError(Throwable cause)
    {
        LOG.warn(cause);
    }

    @OnWebSocketMessage
    public void onMessage(String msg)
    {
        LOG.info("onMessage() - {}", msg);
    }
}