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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.