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Re: [lwip-users] Sending large data problem.

From: Sergio R. Caprile
Subject: Re: [lwip-users] Sending large data problem.
Date: Fri, 03 Oct 2014 11:29:17 -0300
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

You should read the wiki and check the examples in the contrib tree.

TCP can only buffer a certain amount of data, and will not accept
anything more. It will send it, and can't send anything else until that
data is ACKed. Once that data is ACKed, you will receive a callback in
tcp_sent() and then you can send more data, but only if you free the
memory you've allocated for the prior buffer.

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