Provided by: libcurl4-doc_7.47.0-1ubuntu2.19_all 

NAME
CURLOPT_NOSIGNAL - skip all signal handling
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOSIGNAL, long onoff);
DESCRIPTION
If onoff is 1, libcurl will not use any functions that install signal handlers or any functions that
cause signals to be sent to the process. This option is here to allow multi-threaded unix applications to
still set/use all timeout options etc, without risking getting signals.
If this option is set and libcurl has been built with the standard name resolver, timeouts will not occur
while the name resolve takes place. Consider building libcurl with the c-ares or threaded resolver
backends to enable asynchronous DNS lookups, to enable timeouts for name resolves without the use of
signals.
Setting CURLOPT_NOSIGNAL(3) to 1 makes libcurl NOT ask the system to ignore SIGPIPE signals, which
otherwise are sent by the system when trying to send data to a socket which is closed in the other end.
libcurl makes an effort to never cause such SIGPIPEs to trigger, but some operating systems have no way
to avoid them and even on those that have there are some corner cases when they may still happen,
contrary to our desire. In addition, using CURLAUTH_NTLM_WB authentication could cause a SIGCHLD signal
to be raised.
DEFAULT
0
AVAILABILITY
Added in 7.10
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
libcurl 7.37.0 16 Jun 2014 CURLOPT_NOSIGNAL(3)