I have a class that will download a file from a https server. When I run it, it returns a lot of errors. It seems that I have a problem with my certificate. Is it possible to ignore the client-server authentication? If so, how?
package com.da;import java.io.FileOutputStream;import java.io.IOException;import java.nio.CharBuffer;import java.util.concurrent.Future;import org.apache.http.HttpResponse;import org.apache.http.client.utils.URIUtils;import org.apache.http.impl.nio.client.DefaultHttpAsyncClient;import org.apache.http.nio.IOControl;import org.apache.http.nio.client.HttpAsyncClient;import org.apache.http.nio.client.methods.AsyncCharConsumer;import org.apache.http.nio.client.methods.HttpAsyncGet;import org.apache.http.nio.client.methods.HttpAsyncPost;public class RSDDownloadFile { static FileOutputStream fos; public void DownloadFile(String URI, String Request) throws Exception { java.net.URI uri = URIUtils.createURI("https", "176.66.3.69:6443", -1, "download.aspx","Lang=EN&AuthToken=package", null); System.out.println("URI Query: "+ uri.toString()); HttpAsyncClient httpclient = new DefaultHttpAsyncClient(); httpclient.start(); try { Future<Boolean> future = httpclient.execute( new HttpAsyncGet(uri), new ResponseCallback(), null); Boolean result = future.get(); if (result != null && result.booleanValue()) { System.out.println("\nRequest successfully executed"); } else { System.out.println("Request failed"); } } catch(Exception e){ System.out.println("[DownloadFile] Exception: "+ e.getMessage()); } finally { System.out.println("Shutting down"); httpclient.shutdown(); } System.out.println("Done"); } static class ResponseCallback extends AsyncCharConsumer<Boolean> { @Override protected void onResponseReceived(final HttpResponse response) { System.out.println("Response: "+ response.getStatusLine()); System.out.println("Header: "+ response.toString()); try { //if(response.getStatusLine().getStatusCode()==200) fos = new FileOutputStream( "Response.html" ); }catch(Exception e){ System.out.println("[onResponseReceived] Exception: "+ e.getMessage()); } } @Override protected void onCharReceived(final CharBuffer buf, final IOControl ioctrl) throws IOException { try { while (buf.hasRemaining()) { //System.out.print(buf.get()); fos.write(buf.get()); } }catch(Exception e) { System.out.println("[onCharReceived] Exception: "+ e.getMessage()); } } @Override protected void onCleanup() { try { if(fos!=null) fos.close(); }catch(Exception e){ System.out.println("[onCleanup] Exception: "+ e.getMessage()); } System.out.println("onCleanup()"); } @Override protected Boolean buildResult() { return Boolean.TRUE; } }}Errors:
URI Query: https://176.66.3.69:6443/download.aspx?Lang=EN&AuthToken=packageAug 2, 2011 3:47:57 PM org.apache.http.impl.nio.client.NHttpClientProtocolHandler exceptionSEVERE: I/O error: General SSLEngine problemjavax.net.ssl.SSLHandshakeException: General SSLEngine problem at com.sun.net.ssl.internal.ssl.Handshaker.checkThrown(Unknown Source) at com.sun.net.ssl.internal.ssl.SSLEngineImpl.checkTaskThrown(Unknown Source) at com.sun.net.ssl.internal.ssl.SSLEngineImpl.writeAppRecord(Unknown Source) at com.sun.net.ssl.internal.ssl.SSLEngineImpl.wrap(Unknown Source) at javax.net.ssl.SSLEngine.wrap(Unknown Source) at org.apache.http.impl.nio.reactor.SSLIOSession.doHandshake(SSLIOSession.java:154) at org.apache.http.impl.nio.reactor.SSLIOSession.isAppInputReady(SSLIOSession.java:276) at org.apache.http.impl.nio.client.InternalClientEventDispatch.inputReady(InternalClientEventDispatch.java:79) at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:161) at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:335) at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315) at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:275) at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104) at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:542) at java.lang.Thread.run(Unknown Source)Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source) at com.sun.net.ssl.internal.ssl.SSLEngineImpl.fatal(Unknown Source) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source) at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source) at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source) at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source) at com.sun.net.ssl.internal.ssl.Handshaker$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at com.sun.net.ssl.internal.ssl.Handshaker$DelegatedTask.run(Unknown Source) at org.apache.http.impl.nio.reactor.SSLIOSession.doHandshake(SSLIOSession.java:180) ... 9 moreCaused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(Unknown Source) ... 16 moreCaused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 21 moreonCleanup()[DownloadFile] Exception: javax.net.ssl.SSLHandshakeException: General SSLEngine problemShutting downDone