Curl transfers not completing

[docEdub]

In UrlRequest_Unix.cpp, curl transfers are not always completing. Gary and I looked at this for a while and suspect that we're not using the curl library correctly.

Steps to reproduce the behavior:

1. On a Linux setup, start a script that runs the unit tests 1000 times.
2. Eventually, one of the unit tests will get stuck and need to be killed manually.

Expected behavior:
The unit tests should never get stuck and need to be killed manually.

Other:

• Platform: Linux

[CedricGuillemet]

I'm taking a look.

[thomlucc]

@CedricGuillemet - please check with @bghgary

[CedricGuillemet]

It's difficult to repro on my side. I'm even able to do 1000 runs without a failure. I let you fix it @docEdub

[bghgary]

It's so rare, we are going to wait on fixing it.