Thanks Oleg, this works. I also needed to pass my custom HttpAsyncResponseConsumer to the FutureCallback in order to extract the HttpResponse in the callback's "failure" method, and ensure my HttpAsyncResponseConsumer maintains the HttpResponse even after its "releaseResources" method is called.
I can probably provide an example in the future if anyone ever wants to see how I did this. Joe -----Original Message----- From: Oleg Kalnichevski [mailto:ol...@apache.org] Sent: Wednesday, December 07, 2016 4:36 AM To: HttpClient User Discussion <httpclient-users@hc.apache.org> Subject: Re: HttpAsyncClient bounded download size On Tue, 2016-12-06 at 11:21 -0500, Joseph Naegele wrote: > Hi folks, > > How can I limit the amount of data downloaded for a request executed by the > HttpAsyncClient and still process the response as "completed" in the > registered FutureCallback? The use case is a large scale web crawler that > truncates resources deemed too large. > > I started by limiting the amount of data read from the response entity's > InputStream, however this doesn't work with the default > BasicAsyncResponseConsumer, because it uses the dynamically expanding > SimpleInputBuffer to download the entire response entity. > > I implemented my own HttpAsyncResponseConsumer, similar to the > BasicAsyncResponseConsumer, and tried using IOControl to signal shutdown once > the I've read maximum desired number of bytes, however this triggers a > ConnectionClosedException. This is undesirable because I can't distinguish it > from other causes of ConnectionClosedExceptions, and I want to treat > "truncated" responses as completed in the registered FutureCallback (where I > post-process the response). > > Is there another method of implementing my desired functionality? > > Thanks, > Joe Naegele > Hi Joe Make your custom HttpAsyncResponseConsumer throw a custom exception, like IHadEnoughException or some such, and see if it gets correctly propagated to the result callback. If it does not, please raise an issue in JIRA. Oleg --------------------------------------------------------------------- To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org For additional commands, e-mail: httpclient-users-h...@hc.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org For additional commands, e-mail: httpclient-users-h...@hc.apache.org
