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is no current timeout. It does not mean wait forever and it does not mean do not wait at all. It means there is no timeout value known at this point in time.
43 lines
1.8 KiB
Groff
43 lines
1.8 KiB
Groff
.\" $Id$
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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(3)\fP function with the \fBsockfd\fP argument set to
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CURL_SOCKET_TIMEOUT and the \fBeasy\fP argument set to CURL_EASY_TIMEOUT, or
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simply calling \fBcurl_multi_perform(3)\fP if you're using the simpler and
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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, although not deemed stable yet.
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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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