/**
* @param address The request bind address
* @param handlerFactory A {@link Factory} to create an {@link IoHandler} if necessary
* @return The {@link InetSocketAddress} to which the binding occurred
* @throws IOException If failed to bind
*/
private InetSocketAddress doBind(
SshdSocketAddress address, Factory<? extends IoHandler> handlerFactory) throws IOException {
if (acceptor == null) {
FactoryManager manager = session.getFactoryManager();
IoServiceFactory factory = manager.getIoServiceFactory();
IoHandler handler = handlerFactory.create();
acceptor = factory.createAcceptor(handler);
}
// TODO find a better way to determine the resulting bind address - what if multi-threaded
// calls...
Set<SocketAddress> before = acceptor.getBoundAddresses();
try {
InetSocketAddress bindAddress = address.toInetSocketAddress();
acceptor.bind(bindAddress);
Set<SocketAddress> after = acceptor.getBoundAddresses();
if (GenericUtils.size(after) > 0) {
after.removeAll(before);
}
if (GenericUtils.isEmpty(after)) {
throw new IOException(
"Error binding to " + address + "[" + bindAddress + "]: no local addresses bound");
}
if (after.size() > 1) {
throw new IOException(
"Multiple local addresses have been bound for " + address + "[" + bindAddress + "]");
}
return (InetSocketAddress) after.iterator().next();
} catch (IOException bindErr) {
Set<SocketAddress> after = acceptor.getBoundAddresses();
if (GenericUtils.isEmpty(after)) {
close();
}
throw bindErr;
}
}
