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From "samuel sanchez (JIRA)" <j...@apache.org>
Subject [jira] Created: (HTTPCLIENT-606) HttpMethodDirector fails when redirecting to a encoded URL location
Date Wed, 15 Nov 2006 15:20:39 GMT
HttpMethodDirector fails when redirecting to a encoded URL location
-------------------------------------------------------------------

                 Key: HTTPCLIENT-606
                 URL: http://issues.apache.org/jira/browse/HTTPCLIENT-606
             Project: HttpComponents HttpClient
          Issue Type: Bug
          Components: HttpClient
    Affects Versions: 3.0.1
         Environment: Windows XP , JDK 1.5.0_09, Intel plattform
            Reporter: samuel sanchez
            Priority: Minor


When HttpMethodDirector handles the case of redirecting the incoming connection to the location
specified in the header of the http caller method, if this location has any "special" charset
encoding (extended charsets like ISO 8859-1,etc.) the redirection fails this way:

dd-MMM-YYYY hh:mm:ss org.apache.commons.httpclient.HttpMethodDirector processRedirectResponse
WARNING: Redirected location 'http://www.anyCharsetEncodedUrl.ko' is malformed


You can test it using this class:


public class SimpleHttpTestNotWorking {

	public static int urlStatus(String pUrl) throws org.apache.commons.httpclient.HttpException,java.io.IOException{
		org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient();
		org.apache.commons.httpclient.HttpMethod method = new org.apache.commons.httpclient.methods.GetMethod(pUrl);
		return client.executeMethod(method);
	}
		
	public static void main(String[] args) {
		try{
			String url = "http://www.dipualba.es/municipios/F%E9rez"; //known problematic URL
			System.out.println("Return code for ["+url+"]: "+SimpleHttpTestWorking.urlStatus(url));
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}


What I've done to solve it for my particular case has been:


1) In the requester side, I've modified the calling:


public class SimpleHttpTestWorking {

	public static int urlStatus(String pUrl) throws org.apache.commons.httpclient.HttpException,java.io.IOException{
		org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient();
		org.apache.commons.httpclient.HttpMethod method;
	    String encoding = (String)client.getParams().getParameter("http.protocol.content-charset");
	    client.getParams().setParameter("http.protocol.element-charset", encoding);
	    try{
	    	method = new org.apache.commons.httpclient.methods.GetMethod(pUrl);
	    }catch(IllegalArgumentException iae){
		    try{
		    	org.apache.commons.httpclient.URI uri = new org.apache.commons.httpclient.URI(pUrl,true);
		    	method = new org.apache.commons.httpclient.methods.GetMethod(uri.getURI());
		    }catch(org.apache.commons.httpclient.URIException ue){
		    	org.apache.commons.httpclient.URI uri = new org.apache.commons.httpclient.URI(pUrl,false,encoding);
			    method = new org.apache.commons.httpclient.methods.GetMethod(uri.getEscapedURI());
		    }		    	
	    }		
		return client.executeMethod(method);
	}
			
	public static void main(String[] args) {
		try{
			String url = "http://www.dipualba.es/municipios/FĂ©rez"; //the same problematic URL
			System.out.println("Return code for ["+url+"]: "+SimpleHttpTestWorking.urlStatus(url));
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}


2) In org.apache.commons.httpclient.HttpMethodDirector.processRedirectResponse(HttpMethod
method) , I've replaced


...
redirectUri = new URI(location, true);
...


for the following code:


...
/*
 * [2006-11-14] 
 * Handles redirections to encoded URI locations 
 * (only if URI and Connection encoding charset has been properly setted)
 * */ 
try{
	redirectUri = new URI(location, true);
}catch(URIException ue){
	Object encoding = this.conn.getParams().getParameter("http.protocol.element-charset");
	if(encoding != null){
		redirectUri = new URI(location, false, (String)encoding);
	}else{
		throw ue;
	}
}
...



Hope it helps!

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