ares_set_socket_callback - Set a socket creation callback

 #include <ares.h> 

 typedef int (*ares_sock_create_callback)(ares_socket_t socket_fd,  int type,
 void *userdata)

 void ares_set_socket_callback(ares_channel channel,  ares_sock_create_callback callback,
 void *userdata)

 cc file.c -lcares 

This function sets a callback in the given ares channel handle. This callback function will be invoked after the socket has been created, and connected to the remote server. The callback must return ARES_SUCCESS if things are fine, or return -1 to signal an error. A returned error will abort the ares operation.

ares_init_options (3), ares_set_socket_configure_callback (3) ares_set_socket_callback(3) was added in c-ares 1.6.0 Gregor Jasny