[HTTPCLIENT-1435] Proxy authentication of Fluent API does not work

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.3.1
• Fix Version/s: 4.3.2
• Component/s: Fluent HC
• Environment: Win7 + JDK6 + HttpClient 4.3.1 + HttpCore 4.3
• Assignee: Unassigned
• Reporter: Remis
• Created: 21/Nov/13 14:03
• Updated: 04/May/17 09:49
• Resolved: 21/Nov/13 14:54

Description

The sample code below demonstrates the issue:

package com.test;

import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.fluent.Executor;
import org.apache.http.client.fluent.Request;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.HttpClientBuilder;

public class Test {
public static void main(final String[] args) {
final HttpHost proxy = new HttpHost("my-proxy.com", 8080);
final String username = "username";
final String password = "password";
final String uri = "https://www.my-uri.com/servlet/action";

// WORKS: HTTP/1.1 200 OK
final CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(new AuthScope(proxy), new UsernamePasswordCredentials(username, password));
final HttpPost httppost = new HttpPost(uri);
httppost.setConfig(RequestConfig.custom().setProxy(proxy).build());
try

{ System.out.println(HttpClientBuilder.create().setDefaultCredentialsProvider(credsProvider).build() .execute(httppost).getStatusLine()); }

catch (final Exception e)

{ e.printStackTrace(); }

// WORKS: as expected: HTTP/1.1 407 Proxy Authentication Required
try { System.out.println(Request.Post(uri).viaProxy(proxy).execute().returnResponse().getStatusLine()); } catch (final Exception e) { e.printStackTrace(); }

// FAILS (not expected): java.net.UnknownHostException:
try

{ final Executor executor = Executor.newInstance().auth(proxy, username, password).authPreemptive(proxy); System.out.println(executor.execute(Request.Post(uri).viaProxy(proxy)).returnResponse().getStatusLine()); }

catch (final Exception e)

{ e.printStackTrace(); }

}
}

The stacktrace below is what I get:
HTTP/1.1 200 OK
HTTP/1.1 407 Proxy Authentication Required
java.net.UnknownHostException: www.my-uri.com/servlet/action
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:850)
at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1201)
at java.net.InetAddress.getAllByName0(InetAddress.java:1154)
at java.net.InetAddress.getAllByName(InetAddress.java:1084)
at java.net.InetAddress.getAllByName(InetAddress.java:1020)
at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:44)
at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:102)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:314)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:357)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:218)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:194)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:85)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.apache.http.client.fluent.Executor.execute(Executor.java:215)
at com.test.Test.main(Test.java:44)