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CURLOPT_NOSIGNAL(3)	   Library Functions Manual	   CURLOPT_NOSIGNAL(3)

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 op-
       tion 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 re-
       solves 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,  con-
       trary to	our desire.

DEFAULT
       0

PROTOCOLS
       This functionality affects all supported	protocols

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	curl 7.10

RETURN VALUE
       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK	(0) means everything was OK, non-zero means an error occurred,
       see libcurl-errors(3).

SEE ALSO
       CURLOPT_TIMEOUT(3)

libcurl				  2025-06-03		   CURLOPT_NOSIGNAL(3)

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