Retrieves the next SocketAddress from this .
Note that this may block for some amount of time. (Eg, a NetworkAddress may need to do a DNS lookup before it can return an address.) Use next_async if you need to avoid blocking.
If this is expected to yield addresses, but for some reason is unable to (eg, because of a DNS error),
then the first call to next will return an appropriate error in *throws
. However, if the first call to next succeeds, then any further internal errors (other than
cancellable being triggered) will be ignored.
| this | |
| cancellable |
optional Cancellable object, null to ignore. |
|
a SocketAddress (owned by the caller), or null on error (in which case *throws will be set) or if there are no more addresses. |