On Thu, 2011-12-01 at 13:11 -0500, William Speirs wrote:
> I'm trying to make a simple HTTP/1.0 request where the Connection header is
> set to Close. I have the following basic code:
>
> HttpParams params = new SyncBasicHttpParams();
> // set the version to 1.0
> params.setParameter(CoreProtocolPNames.PROTOCOL_VERSION,
> HttpVersion.HTTP_1_0.toString());
> httpclient = new DefaultHttpClient(params);
>
> // I attempt to force Connection: Close here
> httpclient.setKeepAliveStrategy(new ConnectionKeepAliveStrategy() {
> public long getKeepAliveDuration(HttpResponse response, HttpContext
> context) {
> return 0;
> }
> });
>
> BasicHttpEntityEnclosingRequest request = new
> BasicHttpEntityEnclosingRequest("POST", baseUrl, HttpVersion.HTTP_1_0);
>
> HttpResponse response = httpclient.execute(httpHost, request);
>
>
> A few questions:
>
> 1) Why doesn't setKeepAliveStrategy() for the client seem to actually do
> that... set the keep alive strategy?
>
The keep-alive strategy determines how long a connection can be kept
alive while idle based on the properties of a response object
http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/conn/ConnectionKeepAliveStrategy.html
It does not populate any HTTP headers. That is the responsibility of
protocol interceptors.
> 2) Why do I have to set the version of the request a second time: once with
> the client via a parameter, and again with the request. Setting the
> parameter value in the client seems to have no affect.
>
The parameter applies only when a protocol version is not set
explicitly, for instance, like that
HttpGet httpget = new HttpGet("/");
> 3) Finally, how do I force Connection: Close instead of Connection:
> Keep-Alive?
>
You can either set the header manually or use a protocol interceptor to
set it automatically on all incoming or outgoing messages.
HttpGet httpget = new HttpGet("/");
httpget.setHeader("connection", "close");
Hope this helps
Oleg
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