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Bind port 0 using ephemeral port #5

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Bind port 0 using ephemeral port #5

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11 changes: 10 additions & 1 deletion core/src/main/java/org/netcrusher/tcp/TcpAcceptor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -60,7 +60,6 @@ class TcpAcceptor implements NetFreezer {
BufferOptions bufferOptions) throws IOException
{
this.crusher = crusher;
this.bindAddress = bindAddress;
this.connectAddress = connectAddress;
this.bindBeforeConnectAddress = bindBeforeConnectAddress;
this.socketOptions = socketOptions;
Expand All @@ -79,6 +78,12 @@ class TcpAcceptor implements NetFreezer {
this.serverSocketChannel.bind(bindAddress);
}

if (bindAddress.getPort() == 0 && serverSocketChannel.getLocalAddress() instanceof InetSocketAddress) {
this.bindAddress = (InetSocketAddress) serverSocketChannel.getLocalAddress();
} else {
this.bindAddress = bindAddress;
}

this.serverSelectionKey = reactor.getSelector()
.register(serverSocketChannel, 0, (selectionKey) -> this.accept());

Expand Down Expand Up @@ -252,6 +257,10 @@ public boolean isFrozen() {
return state.isAnyOf(State.FROZEN | State.CLOSED);
}

public InetSocketAddress getBindAddress() {
return bindAddress;
}

private static final class State extends BitState {

private static final int OPEN = bit(0);
Expand Down
6 changes: 5 additions & 1 deletion core/src/main/java/org/netcrusher/tcp/TcpCrusher.java
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ public class TcpCrusher implements NetCrusher {

private static final int DEFAULT_PAIR_CAPACITY = 32;

private final InetSocketAddress bindAddress;
private InetSocketAddress bindAddress;

private final InetSocketAddress connectAddress;

Expand Down Expand Up @@ -128,6 +128,10 @@ public void open() {

state.set(State.FROZEN);

if (bindAddress.getPort() == 0) {
this.bindAddress = this.acceptor.getBindAddress();
}

LOGGER.info("TcpCrusher <{}>-<{}> is open", bindAddress, connectAddress);

unfreeze();
Expand Down