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56 lines
1.8 KiB
Groff
56 lines
1.8 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_NOSIGNAL.md
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.TH CURLOPT_NOSIGNAL 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_NOSIGNAL \- skip all signal handling
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOSIGNAL, long onoff);
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.fi
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.SH DESCRIPTION
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If \fIonoff\fP is 1, libcurl uses no functions that install signal handlers or
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any functions that cause signals to be sent to the process. This option is
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here to allow multi\-threaded unix applications to still set/use all timeout
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options etc, without risking getting signals.
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If this option is set and libcurl has been built with the standard name
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resolver, timeouts cannot occur while the name resolve takes place. Consider
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building libcurl with the c\-ares or threaded resolver backends to enable
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asynchronous DNS lookups, to enable timeouts for name resolves without the use
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of signals.
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Setting \fICURLOPT_NOSIGNAL(3)\fP to 1 makes libcurl NOT ask the system to
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ignore SIGPIPE signals, which otherwise are sent by the system when trying to
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send data to a socket which is closed in the other end. libcurl makes an
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effort to never cause such SIGPIPE signals to trigger, but some operating
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systems have no way to avoid them and even on those that have there are some
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corner cases when they may still happen, contrary to our desire.
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.SH DEFAULT
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0
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.10
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLOPT_TIMEOUT (3)
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