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CentOS 7.0 - man page for ares_cancel (centos section 3)

ARES_CANCEL(3)				       Library Functions Manual 			       ARES_CANCEL(3)

NAME
ares_cancel - Cancel a resolve
SYNOPSIS
#include <ares.h> void ares_cancel(ares_channel channel)
DESCRIPTION
The ares_cancel function cancels all lookups/requests made on the the name service channel identified by chan- nel. ares_cancel invokes the callbacks for each pending query on the channel, passing a status of ARES_ECAN- CELLED. These calls give the callbacks a chance to clean up any state which might have been stored in their arguments. If such a callback invocation adds a new request to the channel, that request will not be cancelled by the current invocation of ares_cancel.
SEE ALSO
ares_init(3) ares_destroy(3)
NOTES
This function was added in c-ares 1.2.0 c-ares 1.6.0 and earlier pass a status of ARES_ETIMEOUT instead of ARES_ECANCELLED.
AUTHOR
Dirk Manske 31 March 2004 ARES_CANCEL(3)


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