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                     23: .TH CURLOPT_NOSIGNAL 3 "March 23, 2020" "libcurl 7.70.0" "curl_easy_setopt options"
                     24: 
                     25: .SH NAME
                     26: CURLOPT_NOSIGNAL \- skip all signal handling
                     27: .SH SYNOPSIS
                     28: #include <curl/curl.h>
                     29: 
                     30: CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOSIGNAL, long onoff);
                     31: .SH DESCRIPTION
                     32: If \fIonoff\fP is 1, libcurl will not use any functions that install signal
                     33: handlers or any functions that cause signals to be sent to the process. This
                     34: option is here to allow multi-threaded unix applications to still set/use all
                     35: timeout options etc, without risking getting signals.
                     36: 
                     37: If this option is set and libcurl has been built with the standard name
                     38: resolver, timeouts will not occur while the name resolve takes place.
                     39: Consider building libcurl with the c-ares or threaded resolver backends to
                     40: enable asynchronous DNS lookups, to enable timeouts for name resolves without
                     41: the use of signals.
                     42: 
                     43: Setting \fICURLOPT_NOSIGNAL(3)\fP to 1 makes libcurl NOT ask the system to
                     44: ignore SIGPIPE signals, which otherwise are sent by the system when trying to
                     45: send data to a socket which is closed in the other end. libcurl makes an
                     46: effort to never cause such SIGPIPEs to trigger, but some operating systems
                     47: have no way to avoid them and even on those that have there are some corner
                     48: cases when they may still happen, contrary to our desire. In addition, using
                     49: \fICURLAUTH_NTLM_WB\fP authentication could cause a SIGCHLD signal to be
                     50: raised.
                     51: .SH DEFAULT
                     52: 0
                     53: .SH AVAILABILITY
                     54: Added in 7.10
                     55: .SH RETURN VALUE
                     56: Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.