Function aeron_subscription_resolved_endpoint 

pub unsafe extern "C" fn aeron_subscription_resolved_endpoint(
    subscription: *mut aeron_subscription_t,
    address: *mut c_char,
    address_len: usize,
) -> c_int

Retrieves the first local socket address for this subscription. If this is not MDS then it will be the one representing endpoint for this subscription.

@param subscription to query. @param address buffer to hold the resolved endooint. @param address_len available length for the copied address. @return -1 on error, 0 if address not found, 1 if address is found. @see aeron_subscription_local_sockaddrs