On Thu, 2009-09-17 at 14:38 +0800, Micky wrote:
> Dear all,
>
>
>
> After a successful http connection, I want to get the local address with the
> target connection.
>
> But I don’t know how to get it. Any suggestion?
>
>
>
> I know there is HttpRoute will be determined when a HttpClient.execute(), and
> HttpRoute.getLocalAddress() may be useful.
>
> But there is no way to get it (HttpRoute) through the public interface
> according to my experience and my survey of the API javadoc.
>
>
>
> Because I have two network cards and their subnets are different.
>
> One is 192.168.10.x, another is 192.168.20.x
>
>
>
> I want to automatically know if I connect to 192.168.30.x, which network card
> IP will be used?
>
> I think I may get the local address after a successful connection. Am I right?
>
>
>
> I use HttpClient 4.0.
>
>
>
> Thanks in advance.
>
The best way to get access to the underlying HTTP connection is by using
a protocol interceptor. Request interceptors will get called after the
connection has been established but before the request gets executed.
Response interceptors will get called immediately after a response head
has bas been received. Choose whichever plugin point is more appropriate
for your application. Here's an example of getting HTTP connection
socket details using a request inerceptor:
------
DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.addRequestInterceptor(new HttpRequestInterceptor() {
public void process(
final HttpRequest request,
final HttpContext context) throws HttpException, IOException
{
HttpInetConnection conn = (HttpInetConnection) context
.getAttribute(ExecutionContext.HTTP_CONNECTION);
System.out.println("local address: " + conn.getLocalAddress());
System.out.println("local port: " + conn.getLocalPort());
}
});
HttpHost target = new HttpHost("localhost", 8080, "http");
HttpGet req = new HttpGet("/");
System.out.println("executing request to " + target);
HttpResponse rsp = httpclient.execute(target, req);
HttpEntity entity = rsp.getEntity();
System.out.println("----------------------------------------");
System.out.println(rsp.getStatusLine());
System.out.println("----------------------------------------");
if (entity != null) {
entity.consumeContent();
}
------
For details see:
http://hc.apache.org/httpcomponents-client/tutorial/html/
Hope this helps
Oleg
>
>
>
>
> Sincerely,
>
> Micky
>
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