curlopt_nosignal(3) [mojave man page]

CURLOPT_NOSIGNAL(3)					     curl_easy_setopt options					       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  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 7.54.0							 February 03, 2016					       CURLOPT_NOSIGNAL(3)

CURLOPT_TIMEOUT_MS(3)					     curl_easy_setopt options					     CURLOPT_TIMEOUT_MS(3)

NAME

       CURLOPT_TIMEOUT_MS - set maximum time the request is allowed to take

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TIMEOUT_MS, long timeout);

DESCRIPTION

       Pass  a long as parameter containing timeout - the maximum time in milliseconds that you allow the libcurl transfer operation to take. Nor-
       mally, name lookups can take a considerable time and limiting operations to less than a few minutes risk aborting perfectly  normal  opera-
       tions. This option may cause libcurl to use the SIGALRM signal to timeout system calls.

       If  libcurl is built to use the standard system name resolver, that portion of the transfer will still use full-second resolution for time-
       outs with a minimum timeout allowed of one second.

       In unix-like systems, this might cause signals to be used unless CURLOPT_NOSIGNAL(3) is set.

       If both CURLOPT_TIMEOUT(3) and CURLOPT_TIMEOUT_MS(3) are set, the value set last will be used.

       Since this puts a hard limit for how long time a request is allowed to take, it has limited use in dynamic use cases with varying  transfer
       times. You are then advised to explore CURLOPT_LOW_SPEED_LIMIT(3), CURLOPT_LOW_SPEED_TIME(3) or using CURLOPT_PROGRESSFUNCTION(3) to imple-
       ment your own timeout logic.

DEFAULT

       Default timeout is 0 (zero) which means it never times out during transfer.

PROTOCOLS

       All

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

	 /* complete within 20000 milliseconds */
	 curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, 20000L);

	 curl_easy_perform(curl);
       }

AVAILABILITY

       Always

RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_TIMEOUT(3), CURLOPT_CONNECTTIMEOUT(3), CURLOPT_LOW_SPEED_LIMIT(3),

libcurl 7.54.0							 February 03, 2016					     CURLOPT_TIMEOUT_MS(3)