[HTTPCLIENT-1193] Regression causing issues with cross-site redirects

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.2 Final
• Fix Version/s: 4.2.1
• Component/s: HttpClient (classic)
• Assignee: Unassigned
• Reporter: Magnus Gustavsson
• Created: 25/May/12 14:34
• Updated: 05/Oct/13 19:42
• Resolved: 25/May/12 15:20

Description

The release version of HttpClient 4.2 introduces a regression with cross-site redirects that didn't exist previously.

According to Oleg Kalnichevski in HTTPCLIENT-1185: "There is unfortunately a bug in the BasicClientConnectionManager introduced in 4.2 causing issues with cross-site redirects."

For example, the following code

import java.io.IOException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

public class BadRequest {
public static void main(String[] args) {
try

{ HttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet("http://www.edu.mah.se/KK3231/syllabus/"); System.out.println(httpclient.execute(httpget).getStatusLine().getStatusCode()); }

catch (IOException e)

{ e.printStackTrace(); }

}
}

raises an exception as follows:

% java BadRequest
org.apache.http.client.ClientProtocolException
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:909)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at BadRequest.main(BadRequest.java:13)
Caused by: org.apache.http.HttpException: Unable to establish route: planned = {}>http://edu.mah.se; current = {}>http://www.edu.mah.se
at org.apache.http.impl.client.DefaultRequestDirector.establishRoute(DefaultRequestDirector.java:842)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:645)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:480)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
... 3 more