42 lines
1.7 KiB
Groff
42 lines
1.7 KiB
Groff
.\" $Id: curl_multi_timeout.3,v 1.6 2008-08-06 21:22:07 bagder Exp $
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.\"
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.TH curl_multi_timeout 3 "2 Jan 2006" "libcurl 7.16.0" "libcurl Manual"
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.SH NAME
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curl_multi_timeout \- how long to wait for action before proceeding
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLMcode curl_multi_timeout(CURLM *multi_handle, long *timeout);
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.SH DESCRIPTION
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An application using the libcurl multi interface should call
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\fBcurl_multi_timeout(3)\fP to figure out how long it should wait for socket
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actions \- at most \- before proceeding.
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Proceeding means either doing the socket-style timeout action: call the
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\fBcurl_multi_socket_action(3)\fP function with the \fBsockfd\fP argument set
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to CURL_SOCKET_TIMEOUT, or call \fBcurl_multi_perform(3)\fP if you're using
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the simpler and older multi interface approach.
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The timeout value returned in the long \fBtimeout\fP points to, is in number
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of milliseconds at this very moment. If 0, it means you should proceed
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immediately without waiting for anything. If it returns -1, there's no timeout
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at all set.
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Note: if libcurl returns a -1 timeout here, it just means that libcurl
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currently has no stored timeout value. You must not wait too long (more than a
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few seconds perhaps) before you call curl_multi_perform() again.
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.SH "RETURN VALUE"
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The standard CURLMcode for multi interface error codes.
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.SH "TYPICAL USAGE"
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Call \fBcurl_multi_timeout(3)\fP, then wait for action on the sockets. You
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figure out which sockets to wait for by calling \fBcurl_multi_fdset(3)\fP or
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by a previous call to \fBcurl_multi_socket(3)\fP.
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.SH AVAILABILITY
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This function was added in libcurl 7.15.4.
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.SH "SEE ALSO"
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.BR curl_multi_cleanup "(3), " curl_multi_init "(3), "
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.BR curl_multi_fdset "(3), " curl_multi_info_read "(3), "
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.BR curl_multi_socket "(3) "
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