So 5MB works, but larger doesn't work? What if you up the timeout, does it work then? There's nothing in curl or libcurl that makes any difference to data sizes so .5, 5, 50 or 500 MB are all the same to libcurl which makes me suspect that if there's a problem at a certain limit it is _likely_ that the problem is caused by something else.

Which OS are you using? Which TLS backend are you using?

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** [bugs:#1427] Facing 'Operation Timeout' issue with libcurl**
**Status:** open
**Labels:** timeout 
**Created:** Fri Sep 26, 2014 07:51 AM UTC by Avi
**Last Updated:** Sun Sep 28, 2014 06:22 PM UTC
**Owner:** Daniel Stenberg
Hi 
i am working for one of the cisco products, where we are using libcurl to send messages (wav file) to Exchange Server. we are using libCurl version 7.30 right now. With this version, when we try to send message of size >= 5MB (to exchange 2010, SP2) we are getting timedout error. i explored few more versions of libcurl and analyze that timeout issue was not there till version 7.23, it got introduced after that. Latest libcurl version 7.38 also has the same issue.
We have configured libcurl timeout to '15 seconds' and while sending the data (of nearly 5MB) getting following error message:
"HTTP request failed with error: Timeout was reached -- Operation timed out after 15003 milliseconds with 0 bytes received".
Can anyone suggest, and provide some help.
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