#include <ares.h> int ares_dup(ares_channel *dest, ares_channel source)
The ares_dup function duplicates an existing communications channel for name service lookups. If it returns successfully, ares_dup will set the variable pointed to by dest to a handle used to identify the name service channel. The caller should invoke ares_destroy on the handle when the channel is no longer needed.
ares_dup was added in c-ares 1.6.0
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