WebSocket 客户端关闭连接

Question

我正在尝试用 Java 构建一个独立的 WebSocket 客户端，它连接到 C# 中的 WebSocket 服务器。我正在使用为 WebSocket 服务器生成的自签名证书。我可以使用 WSS 在 Chrome 浏览器中连接到 WebSocket 服务器，没有任何问题。尝试使用 TooTallNate/Java-WebSocket 库时，它不起作用。 OnClose 方法在连接时立即调用。

我在生成的 *.pfx 文件中有一个自签名证书，用于 C# 服务器并导入到我的受信任的根存储中。我使用 keytool 从这个文件创建了一个 *.jks （我认为我已经正确地做到了）。我正在使用由 keytool 在我的代码中生成的 keystore.jks。

这是我的主要方法：

public static void main(String[] args) throws Exception {
    ChatClient chatclient = new ChatClient("wss://thomas.localnetwork.com:65120/wsserver?userId=Thomas", "Thomas", "1", "1", "L");
    // load up the key store
    String STORETYPE = "JKS";
    String KEYSTORE = "C:\\Users\\thomas\\Desktop\\keystore.jks";
    String STOREPASSWORD = "test12345";
    String KEYPASSWORD = "test";

    KeyStore ks = KeyStore.getInstance( STORETYPE );
    File kf = new File( KEYSTORE );
    ks.load( new FileInputStream( kf ), STOREPASSWORD.toCharArray() );

    KeyManagerFactory kmf = KeyManagerFactory.getInstance( "SunX509" );
    kmf.init( ks, KEYPASSWORD.toCharArray() );
    TrustManagerFactory tmf = TrustManagerFactory.getInstance( "SunX509" );
    tmf.init( ks );

    SSLContext sslContext = null;
    sslContext = SSLContext.getInstance( "TLS" );
    sslContext.init( kmf.getKeyManagers(), tmf.getTrustManagers(), null );
    // sslContext.init( null, null, null ); // will use java's default key and trust store which is sufficient unless you deal with self-signed certificates

    SSLSocketFactory factory = sslContext.getSocketFactory();// (SSLSocketFactory) SSLSocketFactory.getDefault();

    chatclient.setSocketFactory( factory );

    chatclient.connectBlocking();

    BufferedReader reader = new BufferedReader( new InputStreamReader( System.in ) );
    while ( true ) {
        String line = reader.readLine();
        if( line.equals( "close" ) ) {
            chatclient.closeBlocking();
        } else if ( line.equals( "open" ) ) {
            chatclient.reconnect();
        } else {
            ucm.send( line );
        }
    }
}

这是我收到的例外情况：

Closed connection on wss://laptop-thomas.compuflex1.com:65120/wsucm_deviceagent?userId=Thomas
javax.net.ssl.SSLException: java.net.SocketException: Connection reset
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
    at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949)
    at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1906)
    at sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1870)
    at sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1815)
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:116)
    at java.io.InputStream.read(InputStream.java:101)
    at org.java_websocket.client.WebSocketClient.run(WebSocketClient.java:424)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:210)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
    at sun.security.ssl.InputRecord.read(InputRecord.java:503)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:973)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
    at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:928)
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:105)
    ... 3 more

有什么方法可以让我获得有关握手的更多详细信息或实际问题是什么？异常堆栈跟踪似乎根本没有帮助。

Answer 1

我的问题是我的本地防火墙引起了问题。我还发现我可以将证书安装到 Java 的受信任根存储中。

请注意，每个 Java 版本（JDK 和 JRE）都有自己的“cacerts”文件。请务必为您的开发或运行时环境安装正确的版本。在我意识到这一点之前，我的头撞到了墙上，因为它在 IntelliJ 中不起作用。

1. Install the certificate to the JVM trusted root store
2. Check if it's been installed correctly
3. 删除代码的密钥库部分

这是在将证书安装到正确位置后对我的代码所做的更改。

public static void main(String[] args) throws Exception {
    ChatClient chatclient = new ChatClient("wss://thomas.localnetwork.com:65120/wsserver?userId=Thomas", "Thomas", "1", "1", "L");

    chatclient.connectBlocking();

    BufferedReader reader = new BufferedReader( new InputStreamReader( System.in ) );
    while ( true ) {
        String line = reader.readLine();
        if( line.equals( "close" ) ) {
            chatclient.closeBlocking();
        } else if ( line.equals( "open" ) ) {
            chatclient.reconnect();
        } else {
            chatclient.send( line );
        }
    }
}