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Re: gnutls_record_recv() hangs

From: Michael Cronenworth
Subject: Re: gnutls_record_recv() hangs
Date: Mon, 15 Aug 2011 16:54:49 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20110707 Thunderbird/5.0

Dinh Le wrote:
But this hack does not work since the previously received message may
be less than 1024 bytes long but there are still more data available
for receiving.  Worse yet, gnutls_record_recv() would hang indefinitely
if there's no data available to be received.

You will need to use non-blocking I/O if you want to do multiple reads without hanging.

You have two options:
1. Add large static buffers and do one read.
2. Use non-blocking I/O and do multiple reads in blocks (the size can be up to you) and dynamically allocate memory to receive an unknown size data packet.

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