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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 38196] New: - Provide access to port of Host header
Date Mon, 09 Jan 2006 14:23:03 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=38196

           Summary: Provide access to port of Host header
           Product: HttpClient
           Version: 3.0 Final
          Platform: Other
               URL: http://marc.theaimsgroup.com/?t=113647183600002&r=1&w=2
        OS/Version: other
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Commons HttpClient
        AssignedTo: httpclient-dev@jakarta.apache.org
        ReportedBy: odi@odi.ch


We use a load balancer that connects to the HTTP server and the HTTP server
connects to the application server. We use port translation in our load
balancer. So when e.g. a client connects to 90 of the load balancer, the load
balancer connects to port 100 of the HTTP server. The load balancer doesn't
change the Host request header, so in the host request header is still the
original virtual host name and port, in this case port 90. For this reason, the
virtual hosts of the HTTP server and application server are configured based on
the external port numbers, so in this case port 90.
 
For test purposes, we sometimes want to connect directly to the HTTP server or
the application server, bypassing the load balancer. To do this, we need to
connect to the same port as the load balancer would, in this example port 100,
but the host header of this request should be the same as if the request would
go through the load balancer, so in this example port 90, because the HTTP
server and application server's virtual hosts are configured for this port.

The attached patch adds the possibility to specify the port number for virtual
hosts.

Here's a code snippet that uses the patched code:

HttpClient httpClient = new HttpClient();
HttpMethod method = new GetMethod();
HostConfiguration hostConfiguration = new HostConfiguration();
hostConfiguration.setHost("localhost", 80, "http");
HostParams params = new HostParams();
params.setVirtualHost("localhost");
params.setVirtualHostPort(100);
hostConfiguration.setParams(params);
httpClient.executeMethod(hostConfiguration, method);
System.out.println(method.getResponseBodyAsString());
method.releaseConnection();

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