On Thu, 2012-04-12 at 21:40 -0400, Dan Checkoway wrote:
> Hello,
>
> I'm a long-time very happy user of HttpClient. I have bumped into what I
> believe is a bug...but it's possible I'm just abusing the API and missing
> something simple. :-)
>
> I use ThreadSafeClientConnManager and a single shared instance of
> DefaultHttpClient to manage a persistent HTTP connection pool. It works
> exactly as I need it to -- except it's not obeying timeouts.
>
> What I need to do is set an arbitrary timeout for each individual request.
> That is, I can't just set one timeout up front when I create the
> HttpClient. The timeout I need to use varies from request to request.
>
> The way I'm *trying* to convey the timeout is by setting attributes on the
> HttpContext as shown in the code below...but what I'm experiencing is that
> my timeouts are being ignored.
>
> I believe the root of the problem is that AbstractHttpClient is using its
> determineParams() method, but that's completely disregarding the params
> which may have been set on the context.
>
> Can you let me know if (a) this is a bug and I'm doing things correctly on
> my end, or (b) there's another proper way to convey desired SO_TIMEOUT
> and/or connect timeout on a per-request basis?
>
> Thanks!
>
Dan
The HTTP context is intended for sharing mutable runtime data. What you
want is to set HTTP parameters at the request level by using
HttpUriRequest#getParams()
Hope this helps
Oleg
> public class HttpTimeoutExample {
> private ThreadSafeClientConnManager connMgr;
> private HttpClient httpClient;
>
> public HttpTimeoutBugExample(int connTtlMs, int maxTotal, int
> defaultMaxPerRoute) {
> this.defaultConnectionTimeout = defaultConnectionTimeout;
> this.defaultSoTimeout = defaultSoTimeout;
>
> connMgr = new
> ThreadSafeClientConnManager(SchemeRegistryFactory.createDefault(),
> connTtlMs, TimeUnit.MILLISECONDS);
> connMgr.setMaxTotal(maxTotal);
> connMgr.setDefaultMaxPerRoute(defaultMaxPerRoute);
>
> httpClient = new DefaultHttpClient(connMgr);
> }
>
> public void doGetWithTimeout(String someUrl, boolean handleRedirects,
> int timeLimitMs) {
> HttpUriRequest httpRequest = new HttpGet(someUrl);
>
> BasicHttpContext httpContext = new BasicHttpContext();
> httpContext.setAttribute(ClientPNames.HANDLE_REDIRECTS,
> Boolean.valueOf(handleRedirects));
>
> // Set timeouts...these are being ignored!
> httpContext.setAttribute(CoreConnectionPNames.CONNECTION_TIMEOUT,
> Integer.valueOf(timeLimitMs));
> httpContext.setAttribute(CoreConnectionPNames.SO_TIMEOUT,
> Integer.valueOf(timeLimitMs));
>
> HttpResponse httpResponse = httpClient.execute(httpRequest,
> httpContext);
> HttpEntity httpEntity = httpResponse.getEntity();
> try {
> // read the response entity
> } finally {
> EntityUtils.consume(httpEntity);
> }
> }
> }
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