sigpipe: if MBEDTLS is used, force curl to ignore sigpipe.

[JeremieRapin]

mbedtls doesn't have a sigpipe management.
If a write/read occurs when the remote closes the socket, the signal is raised and kills the application.
Use the curl mecanisms fix this behavior.

Signed-off-by: Jeremie Rapin j.rapin@overkiz.com

[bagder]

Thanks! Assuming this is true, the fix looks fine. I tried to find some docs about this regarding mbedTLS but failed so I will just trust you that this is the case.

[JeremieRapin]

If it can help you, a sigpipe management appears in object net_sockets.
This piece of code is defined by:

provides an example integration of the Mbed TLS library into a BSD sockets implementation. The module is intended to be an example of how Mbed TLS can be integrated into a networking stack, as well as to be Mbed TLS's network integration for its supported platforms.

[bagder]

Thanks!