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From "Moshe Elisha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HTTPCLIENT-1242) Preemptive authentication using AuthCache stopped working
Date Thu, 04 Oct 2012 08:25:07 GMT
Moshe Elisha created HTTPCLIENT-1242:
----------------------------------------

             Summary: Preemptive authentication using AuthCache stopped working
                 Key: HTTPCLIENT-1242
                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1242
             Project: HttpComponents HttpClient
          Issue Type: Bug
    Affects Versions: 4.2.1, 4.2 Final
         Environment: JDK 1.6
            Reporter: Moshe Elisha


Running the following example with httpclient and httpcore 4.1.1 works fine.
When using httpclient 4.2.1 + httpcore 4.2.2 or httpclient 4.2 + httpcore 4.2, I get "401
Unauthorized".

The test source code

package test;

import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.AuthCache;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.BasicAuthCache;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.util.EntityUtils;

public class ClientPreemptiveBasicAuthentication {

    public static void main(String[] args) throws Exception {

        HttpHost targetHost = new HttpHost("api.heroku.com", -1, "https");

        DefaultHttpClient httpclient = new DefaultHttpClient();
        try {
            httpclient.getCredentialsProvider().setCredentials(
                    new AuthScope(targetHost.getHostName(), targetHost.getPort()),
                    new UsernamePasswordCredentials("username", "password"));

            // Create AuthCache instance
            AuthCache authCache = new BasicAuthCache();
            // Generate BASIC scheme object and add it to the local
            // auth cache
            BasicScheme basicAuth = new BasicScheme();
            authCache.put(targetHost, basicAuth);

            // Add AuthCache to the execution context
            BasicHttpContext localcontext = new BasicHttpContext();
            localcontext.setAttribute(ClientContext.AUTH_CACHE, authCache);

            HttpGet httpget = new HttpGet("/vendor/apps/");

            System.out.println("executing request: " + httpget.getRequestLine());
            System.out.println("to target: " + targetHost);

            HttpResponse response = httpclient.execute(targetHost, httpget, localcontext);
            HttpEntity entity = response.getEntity();

            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            if (entity != null) {
                System.out.println("Response content length: " + entity.getContentLength());
            }
            EntityUtils.consume(entity);

        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }

}


Working 4.1.1 TRACE output:

executing request: GET /vendor/apps/ HTTP/1.1
to target: https://api.heroku.com
2012-10-04 09:31:31,888 DEBUG [main] SingleClientConnManager:212 - Get connection for route
HttpRoute[{s}->https://api.heroku.com]
2012-10-04 09:31:32,846 DEBUG [main] DefaultClientConnectionOperator:145 - Connecting to api.heroku.com/50.16.204.172:443
2012-10-04 09:31:33,760 DEBUG [main] RequestAddCookies:132 - CookieSpec selected: best-match
2012-10-04 09:31:33,774 DEBUG [main] RequestAuthCache:112 - Re-using cached 'basic' auth scheme
for https://api.heroku.com
2012-10-04 09:31:33,938 DEBUG [main] DefaultHttpClient:631 - Attempt 1 to execute request
2012-10-04 09:31:33,939 DEBUG [main] DefaultClientConnection:264 - Sending request: GET /vendor/apps/
HTTP/1.1
2012-10-04 09:31:33,939 DEBUG [main] wire:63 - >> "GET /vendor/apps/ HTTP/1.1[\r][\n]"
2012-10-04 09:31:33,940 DEBUG [main] wire:63 - >> "Host: api.heroku.com[\r][\n]"
2012-10-04 09:31:33,940 DEBUG [main] wire:63 - >> "Connection: Keep-Alive[\r][\n]"
2012-10-04 09:31:33,940 DEBUG [main] wire:63 - >> "User-Agent: Apache-HttpClient/4.1.1
(java 1.5)[\r][\n]"
2012-10-04 09:31:33,940 DEBUG [main] wire:63 - >> "Authorization: Basic XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX[\r][\n]"
2012-10-04 09:31:33,940 DEBUG [main] wire:63 - >> "[\r][\n]"
2012-10-04 09:31:33,940 DEBUG [main] headers:268 - >> GET /vendor/apps/ HTTP/1.1
2012-10-04 09:31:33,940 DEBUG [main] headers:271 - >> Host: api.heroku.com
2012-10-04 09:31:33,940 DEBUG [main] headers:271 - >> Connection: Keep-Alive
2012-10-04 09:31:33,940 DEBUG [main] headers:271 - >> User-Agent: Apache-HttpClient/4.1.1
(java 1.5)
2012-10-04 09:31:33,942 DEBUG [main] headers:271 - >> Authorization: Basic XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2012-10-04 09:31:38,545 DEBUG [main] wire:63 - << "HTTP/1.1 200 OK[\r][\n]"
2012-10-04 09:31:38,548 DEBUG [main] wire:63 - << "Cache-Control: private, max-age=0,
must-revalidate[\r][\n]"
2012-10-04 09:31:38,548 DEBUG [main] wire:63 - << "Content-Type: application/json; charset=utf-8[\r][\n]"
2012-10-04 09:31:38,549 DEBUG [main] wire:63 - << "Date: Thu, 04 Oct 2012 07:32:24 GMT[\r][\n]"
2012-10-04 09:31:38,549 DEBUG [main] wire:63 - << "ETag: "dbfbf824d9c6565b3e0d663411d5c710"[\r][\n]"
2012-10-04 09:31:38,549 DEBUG [main] wire:63 - << "Server: nginx/1.2.3[\r][\n]"
2012-10-04 09:31:38,550 DEBUG [main] wire:63 - << "Status: 200 OK[\r][\n]"
2012-10-04 09:31:38,550 DEBUG [main] wire:63 - << "Strict-Transport-Security: max-age=500[\r][\n]"
2012-10-04 09:31:38,550 DEBUG [main] wire:63 - << "X-Runtime: 3726[\r][\n]"
2012-10-04 09:31:38,550 DEBUG [main] wire:63 - << "Content-Length: 100953[\r][\n]"
2012-10-04 09:31:38,550 DEBUG [main] wire:63 - << "Connection: keep-alive[\r][\n]"
2012-10-04 09:31:38,551 DEBUG [main] wire:63 - << "[\r][\n]"
2012-10-04 09:31:38,551 DEBUG [main] DefaultClientConnection:249 - Receiving response: HTTP/1.1
200 OK
2012-10-04 09:31:38,551 DEBUG [main] headers:252 - << HTTP/1.1 200 OK
2012-10-04 09:31:38,552 DEBUG [main] headers:255 - << Cache-Control: private, max-age=0,
must-revalidate
2012-10-04 09:31:38,552 DEBUG [main] headers:255 - << Content-Type: application/json;
charset=utf-8
2012-10-04 09:31:38,552 DEBUG [main] headers:255 - << Date: Thu, 04 Oct 2012 07:32:24
GMT
2012-10-04 09:31:38,552 DEBUG [main] headers:255 - << ETag: "dbfbf824d9c6565b3e0d663411d5c710"
2012-10-04 09:31:38,552 DEBUG [main] headers:255 - << Server: nginx/1.2.3
2012-10-04 09:31:38,552 DEBUG [main] headers:255 - << Status: 200 OK
2012-10-04 09:31:38,553 DEBUG [main] headers:255 - << Strict-Transport-Security: max-age=500
2012-10-04 09:31:38,553 DEBUG [main] headers:255 - << X-Runtime: 3726
2012-10-04 09:31:38,553 DEBUG [main] headers:255 - << Content-Length: 100953
2012-10-04 09:31:38,553 DEBUG [main] headers:255 - << Connection: keep-alive
2012-10-04 09:31:38,561 DEBUG [main] DefaultHttpClient:477 - Connection can be kept alive
indefinitely
----------------------------------------
HTTP/1.1 200 OK
Response content length: 100953



Non-working httpclient 4.2.1 + httpcore 4.2.2 TRACE output:

executing request: GET /vendor/apps/ HTTP/1.1
to target: https://api.heroku.com
2012-10-04 09:29:16,976 DEBUG [main] BasicClientConnectionManager:157 - Get connection for
route {s}->https://api.heroku.com
2012-10-04 09:29:17,392 DEBUG [main] DefaultClientConnectionOperator:177 - Connecting to api.heroku.com:443
2012-10-04 09:29:18,432 DEBUG [main] RequestAddCookies:132 - CookieSpec selected: best-match
2012-10-04 09:29:18,441 DEBUG [main] RequestTargetAuthentication:78 - Target auth state: UNCHALLENGED
2012-10-04 09:29:18,441 DEBUG [main] RequestProxyAuthentication:87 - Proxy auth state: UNCHALLENGED
2012-10-04 09:29:18,442 DEBUG [main] DefaultHttpClient:710 - Attempt 1 to execute request
2012-10-04 09:29:18,442 DEBUG [main] DefaultClientConnection:269 - Sending request: GET /vendor/apps/
HTTP/1.1
2012-10-04 09:29:18,442 DEBUG [main] wire:63 - >> "GET /vendor/apps/ HTTP/1.1[\r][\n]"
2012-10-04 09:29:18,443 DEBUG [main] wire:63 - >> "Host: api.heroku.com[\r][\n]"
2012-10-04 09:29:18,443 DEBUG [main] wire:63 - >> "Connection: Keep-Alive[\r][\n]"
2012-10-04 09:29:18,443 DEBUG [main] wire:63 - >> "User-Agent: Apache-HttpClient/4.2.1
(java 1.5)[\r][\n]"
2012-10-04 09:29:18,443 DEBUG [main] wire:63 - >> "[\r][\n]"
2012-10-04 09:29:18,444 DEBUG [main] headers:273 - >> GET /vendor/apps/ HTTP/1.1
2012-10-04 09:29:18,444 DEBUG [main] headers:276 - >> Host: api.heroku.com
2012-10-04 09:29:18,444 DEBUG [main] headers:276 - >> Connection: Keep-Alive
2012-10-04 09:29:18,444 DEBUG [main] headers:276 - >> User-Agent: Apache-HttpClient/4.2.1
(java 1.5)
2012-10-04 09:29:19,553 DEBUG [main] wire:63 - << "HTTP/1.1 401 Unauthorized[\r][\n]"
2012-10-04 09:29:19,557 DEBUG [main] wire:63 - << "Cache-Control: no-cache[\r][\n]"
2012-10-04 09:29:19,557 DEBUG [main] wire:63 - << "Content-Type: application/json; charset=utf-8[\r][\n]"
2012-10-04 09:29:19,557 DEBUG [main] wire:63 - << "Date: Thu, 04 Oct 2012 07:30:05 GMT[\r][\n]"
2012-10-04 09:29:19,557 DEBUG [main] wire:63 - << "Server: nginx/1.2.3[\r][\n]"
2012-10-04 09:29:19,558 DEBUG [main] wire:63 - << "Status: 401 Unauthorized[\r][\n]"
2012-10-04 09:29:19,558 DEBUG [main] wire:63 - << "Strict-Transport-Security: max-age=500[\r][\n]"
2012-10-04 09:29:19,558 DEBUG [main] wire:63 - << "X-Runtime: 15[\r][\n]"
2012-10-04 09:29:19,559 DEBUG [main] wire:63 - << "Content-Length: 25[\r][\n]"
2012-10-04 09:29:19,559 DEBUG [main] wire:63 - << "Connection: keep-alive[\r][\n]"
2012-10-04 09:29:19,559 DEBUG [main] wire:63 - << "[\r][\n]"
2012-10-04 09:29:19,560 DEBUG [main] DefaultClientConnection:254 - Receiving response: HTTP/1.1
401 Unauthorized
2012-10-04 09:29:19,561 DEBUG [main] headers:257 - << HTTP/1.1 401 Unauthorized
2012-10-04 09:29:19,561 DEBUG [main] headers:260 - << Cache-Control: no-cache
2012-10-04 09:29:19,561 DEBUG [main] headers:260 - << Content-Type: application/json;
charset=utf-8
2012-10-04 09:29:19,561 DEBUG [main] headers:260 - << Date: Thu, 04 Oct 2012 07:30:05
GMT
2012-10-04 09:29:19,561 DEBUG [main] headers:260 - << Server: nginx/1.2.3
2012-10-04 09:29:19,561 DEBUG [main] headers:260 - << Status: 401 Unauthorized
2012-10-04 09:29:19,562 DEBUG [main] headers:260 - << Strict-Transport-Security: max-age=500
2012-10-04 09:29:19,562 DEBUG [main] headers:260 - << X-Runtime: 15
2012-10-04 09:29:19,562 DEBUG [main] headers:260 - << Content-Length: 25
2012-10-04 09:29:19,562 DEBUG [main] headers:260 - << Connection: keep-alive
2012-10-04 09:29:19,569 DEBUG [main] DefaultHttpClient:540 - Connection can be kept alive
indefinitely
2012-10-04 09:29:19,570 DEBUG [main] DefaultHttpClient:92 - api.heroku.com:443 requested authentication
2012-10-04 09:29:19,570 DEBUG [main] DefaultHttpClient:96 - Response contains no authentication
challenges
----------------------------------------
HTTP/1.1 401 Unauthorized
Response content length: 25
2012-10-04 09:29:19,572 DEBUG [main] wire:77 - << "{"error":"Access denied"}"
2012-10-04 09:29:19,572 DEBUG [main] BasicClientConnectionManager:189 - Releasing connection
org.apache.http.impl.conn.ManagedClientConnectionImpl@1aef4504
2012-10-04 09:29:19,572 DEBUG [main] BasicClientConnectionManager:219 - Connection can be
kept alive indefinitely
2012-10-04 09:29:19,573 DEBUG [main] DefaultClientConnection:169 - Connection 0.0.0.0:60524<->50.16.204.172:443
closed




My current workaround is to manually add the authentication header:

NEW WORKING example tested with 4.2+4.2 and client 4.2.1 and core 4.2.2

package test;

import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.ContextAwareAuthScheme;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.AuthCache;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.BasicAuthCache;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.util.EntityUtils;

public class ClientPreemptiveBasicAuthentication {

    public static void main(String[] args) throws Exception {

        DefaultHttpClient httpclient = new DefaultHttpClient();
        try {
            UsernamePasswordCredentials usernamePasswordCredentials = new UsernamePasswordCredentials("username",
"password");

            // Add AuthCache to the execution context
            BasicHttpContext localcontext = new BasicHttpContext();

            HttpGet httpget = new HttpGet("https://api.heroku.com/vendor/apps/");
            httpget.addHeader(new BasicScheme().authenticate(usernamePasswordCredentials,
httpget, localcontext));

            System.out.println("executing request: " + httpget.getRequestLine());

            HttpResponse response = httpclient.execute(httpget, localcontext);
            HttpEntity entity = response.getEntity();

            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            if (entity != null) {
                System.out.println("Response content length: " + entity.getContentLength());
            }
            EntityUtils.consume(entity);

        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }

}


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