CURLOPT_NOSIGNAL - skip all signal handling
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOSIGNAL, long onoff);
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 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 SIGPIPE signals 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.
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All
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
Added in 7.10
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
CURLOPT_TIMEOUT(3),