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From "Tom Fitzhenry (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HTTPCORE-422) BasicAsyncResponseConsumer#onEntityEnclosed is triggered for HEAD responses
Date Wed, 15 Jun 2016 17:22:10 GMT

     [ https://issues.apache.org/jira/browse/HTTPCORE-422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom Fitzhenry updated HTTPCORE-422:
-----------------------------------
    Summary: BasicAsyncResponseConsumer#onEntityEnclosed is triggered for HEAD responses 
(was: BasicAsyncResponseConsumer#onEntity)

> BasicAsyncResponseConsumer#onEntityEnclosed is triggered for HEAD responses
> ---------------------------------------------------------------------------
>
>                 Key: HTTPCORE-422
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-422
>             Project: HttpComponents HttpCore
>          Issue Type: Improvement
>          Components: HttpCore NIO
>    Affects Versions: 4.4.4
>            Reporter: Tom Fitzhenry
>            Assignee: Oleg Kalnichevski
>            Priority: Minor
>
> HttpAsyncRequestExecutor#responseReceived(NHttpClientConnection) calls HttpAsyncResponseConsumer#responseReceived(HttpResponse)
via HttpAsyncClientExchangeHandler#responseReceived(HttpResponse).
> See https://github.com/apache/httpcore/blob/4.4.x/httpcore-nio/src/main/java/org/apache/http/nio/protocol/HttpAsyncRequestExecutor.java#L302
.
> It does this even if the request is a HEAD request. If your HttpAsyncResponseConsumer
is a BasicAsyncResponseConsumer, then this will allocate a buffer of size content-length kB
(or 4kB, if content-length does not exist).
> For a simple proxying Java app, profiling revealed this the allocation due to this was
a bottleneck.
> It'd be nice if 
> Are there use cases for calling HttpAsyncResponseConsumer#responseReceived(HttpResponse)
on HEAD requests? If not, perhaps it could not be called.
> FWIW, it looks like httpclient doe not call the corresponding method for HEAD requests:
https://github.com/apache/httpcore/blob/4.4.x/httpcore/src/main/java/org/apache/http/protocol/HttpRequestExecutor.java#L273-L275



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