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 uses no 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
       cannot 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 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.

DEFAULT

       0

PROTOCOLS

       All

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");

           curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);

           res = curl_easy_perform(curl);

           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in 7.10

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_TIMEOUT(3),