ARES\_DESTROY(3) Library Functions Manual ARES\_DESTROY(3) # [NAME](#NAME) ares\_destroy - Destroy a resolver channel # [SYNOPSIS](#SYNOPSIS) ``` #include void ares_destroy(ares_channel_t *channel) ``` # [DESCRIPTION](#DESCRIPTION) The [**ares\_destroy(3)**](/man/os/c-ares/ares_destroy.3) function destroys the name service channel identified by *channel*, freeing all memory and closing all sockets used by the channel. [**ares\_destroy(3)**](/man/os/c-ares/ares_destroy.3) invokes the callbacks for each pending query on the channel, passing a status of *ARES\_EDESTRUCTION*. These calls give the callbacks a chance to clean up any state which might have been stored in their arguments. A callback must not add new requests to a channel being destroyed. Such a request is refused: the request is not started, and its callback is invoked with a status of *ARES\_EDESTRUCTION* so that any state attached to its argument can be released. A request made from within that notification is refused without a further notification, so that a callback which responds to failure by retrying cannot recurse without bound; its argument is not handed back. This applies as of c-ares version 1.35.0, and c-ares version 1.34.9 on the 1.34 branch. There is no ability to make this function thread-safe. No additional calls using this channel may be made once this function is called. # [SEE ALSO](#SEE_ALSO) [**ares\_init**(3)](/man/os/c-ares/ares_init.3), [**ares\_cancel**(3)](/man/os/c-ares/ares_cancel.3), [**ares\_threadsafety**(3)](/man/os/c-ares/ares_threadsafety.3) 7 December 2004 --- Document: ares_destroy(3) from c-ares 1.34.9-r0 (Chainguard OS) Source: https://github.com/c-ares/c-ares