/**
* @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;
}
}
@Override
public synchronized void stopDynamicPortForwarding(SshdSocketAddress local) throws IOException {
Closeable obj;
synchronized (dynamicLocal) {
obj = dynamicLocal.remove(local.getPort());
}
if (obj != null) {
if (log.isDebugEnabled()) {
log.debug("stopDynamicPortForwarding(" + local + ") unbinding");
}
obj.close(true);
acceptor.unbind(local.toInetSocketAddress());
} else {
if (log.isDebugEnabled()) {
log.debug("stopDynamicPortForwarding(" + local + ") no binding found");
}
}
}
@Override
public synchronized void stopLocalPortForwarding(SshdSocketAddress local) throws IOException {
ValidateUtils.checkNotNull(local, "Local address is null");
SshdSocketAddress bound;
synchronized (localToRemote) {
bound = localToRemote.remove(local.getPort());
}
if ((bound != null) && (acceptor != null)) {
if (log.isDebugEnabled()) {
log.debug("stopLocalPortForwarding(" + local + ") unbind " + bound);
}
acceptor.unbind(bound.toInetSocketAddress());
} else {
if (log.isDebugEnabled()) {
log.debug("stopLocalPortForwarding(" + local + ") no mapping/acceptor for " + bound);
}
}
}
@Override
public synchronized void localPortForwardingCancelled(SshdSocketAddress local)
throws IOException {
LocalForwardingEntry entry;
synchronized (localForwards) {
entry =
LocalForwardingEntry.findMatchingEntry(
local.getHostName(), local.getPort(), localForwards);
if (entry != null) {
localForwards.remove(entry);
}
}
if ((entry != null) && (acceptor != null)) {
if (log.isDebugEnabled()) {
log.debug("localPortForwardingCancelled(" + local + ") unbind " + entry);
}
acceptor.unbind(entry.toInetSocketAddress());
} else {
if (log.isDebugEnabled()) {
log.debug("localPortForwardingCancelled(" + local + ") no match/acceptor: " + entry);
}
}
}