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From "Bodo Junglas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HTTPASYNC-40) Cannot suspend input when using AsyncByteConsumer
Date Thu, 25 Apr 2013 07:44:15 GMT
Bodo Junglas created HTTPASYNC-40:
-------------------------------------

             Summary: Cannot suspend input when using AsyncByteConsumer
                 Key: HTTPASYNC-40
                 URL: https://issues.apache.org/jira/browse/HTTPASYNC-40
             Project: HttpComponents HttpAsyncClient
          Issue Type: Bug
    Affects Versions: 4.0-beta3
            Reporter: Bodo Junglas
            Priority: Minor


When inheriting from org.apache.http.nio.client.methods.AsyncByteConsumer a suspendInput on
the iocrlt is unreliable. The core of the problem is this loop:

for (;;) {
            int bytesRead = decoder.read(this.bbuf);
            if (bytesRead <= 0) {
                break;
            }
            this.bbuf.flip();
            onByteReceived(this.bbuf, ioctrl);
            this.bbuf.clear();
        }

I.e. while there is anything to be read it is delivered to onByteReceived non-stop (eat or
die).
Unluckily a situation when a server delivers its data so fast that decoder.read never returns
0 is usually also a situation when the client might want to suspend the input for a moment.

Workaround: Use AbstractAsyncResponseConsumer instead.


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