java websocket client ssl(wss)
16lz
2021-01-23
1.如何找一个适合自己的websocket客户端?请看http://en.wikipedia.org/wiki/Comparison_of_WebSocket_implementations
2.因为要在android上使用websocket,要求使用wss,这时候我就选择了java_websocket(http://java-websocket.org/)
这个ws客户端对wss支持不好,源码中的wss client 还要使用证书。我的想法是不验证证书。将他的代码稍作修改:
import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStreamReader;import java.net.URI;import java.security.KeyStore;import javax.net.ssl.KeyManagerFactory;import javax.net.ssl.SSLContext;import javax.net.ssl.TrustManagerFactory;import org.java_websocket.WebSocket;import org.java_websocket.client.DefaultSSLWebSocketClientFactory;import org.java_websocket.client.WebSocketClient;import org.java_websocket.handshake.ServerHandshake;class WebSocketChatClient extends WebSocketClient {public WebSocketChatClient( URI serverUri ) {super( serverUri );}@Overridepublic void onOpen( ServerHandshake handshakedata ) {System.out.println( "Connected" );}@Overridepublic void onMessage( String message ) {System.out.println( "got: " + message );}@Overridepublic void onClose( int code, String reason, boolean remote ) {System.out.println( "Disconnected" );System.exit( 0 );}@Overridepublic void onError( Exception ex ) {ex.printStackTrace();}}public class SSLClientExample {
// always verify the host - dont check for certificate final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() { public boolean verify(String hostname, SSLSession session) { return true; } }; /** * Trust every server - dont check for any certificate */ private static void trustAllHosts(AppWebSocketClient appClient) { // Create a trust manager that does not validate certificate chains TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() { public java.security.cert.X509Certificate[] getAcceptedIssuers() { return new java.security.cert.X509Certificate[]{}; } public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { } public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { } }}; // Install the all-trusting trust manager try { SSLContext sc = SSLContext.getInstance("TLS"); sc.init(null, trustAllCerts, new java.security.SecureRandom()); appClient.setWebSocketFactory(new DefaultSSLWebSocketClientFactory(sc)); } catch (Exception e) { e.printStackTrace(); } }public static void main( String[] args ) throws Exception {WebSocket.DEBUG = true;WebSocketChatClient chatclient = new WebSocketChatClient( new URI( "wss://localhost:8887" ) );trustAllHosts(appClient);chatclient.connectBlocking();BufferedReader reader = new BufferedReader( new InputStreamReader( System.in ) );while ( true ) {String line = reader.readLine();if( line.equals( "close" ) ) {chatclient.close();} else {chatclient.send( line );}}}}
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