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| -rw-r--r-- | docs/libcurl/opts/CURLOPT_NOSIGNAL.3 | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_NOSIGNAL.3 b/docs/libcurl/opts/CURLOPT_NOSIGNAL.3 new file mode 100644 index 000000000..21969e359 --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_NOSIGNAL.3 @@ -0,0 +1,52 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. +.\" * +.\" * This software is licensed as described in the file COPYING, which +.\" * you should have received as part of this distribution. The terms +.\" * are also available at http://curl.haxx.se/docs/copyright.html. +.\" * +.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell +.\" * copies of the Software, and permit persons to whom the Software is +.\" * furnished to do so, under the terms of the COPYING file. +.\" * +.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY +.\" * KIND, either express or implied. +.\" * +.\" ************************************************************************** +.\" +.TH CURLOPT_NOSIGNAL 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_NOSIGNAL \- skip all signal handling +.SH SYNOPSIS +#include <curl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOSIGNAL, long onoff); +.SH DESCRIPTION +If \fIonoff\fP 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. The default value for +this parameter is 0. + +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 \fICURLOPT_NOSIGNAL(3)\fP 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 +\fICURLAUTH_NTLM_WB\fP authentication could cause a SIGCHLD signal to be +raised. +.SH AVAILABILITY +Added in 7.10 |