package org.ldk.batteries;
-import org.ldk.impl.bindings;
import org.ldk.structs.*;
import java.io.IOException;
import java.net.SocketAddress;
import java.net.StandardSocketOptions;
+import java.nio.Buffer;
import java.nio.ByteBuffer;
-import java.nio.channels.SelectionKey;
-import java.nio.channels.Selector;
-import java.nio.channels.ServerSocketChannel;
-import java.nio.channels.SocketChannel;
-import java.util.concurrent.Callable;
+import java.nio.channels.*;
/**
* A NioPeerHandler maps LDK's PeerHandler to Java's NIO I/O interface. It spawns a single background thread which
public class NioPeerHandler {
private static class Peer {
SocketDescriptor descriptor;
- // When we are told by LDK to disconnect, we can't return to LDK until we are sure
- // won't call any more read/write PeerManager functions with the same connection.
- // This is set to true if we're in such a condition (with disconnect checked
- // before with the Peer monitor lock held) and false when we can return.
- boolean block_disconnect_socket = false;
SelectionKey key;
}
peer.key.channel().close();
});
} catch (IOException ignored) { }
- synchronized (peer) {
- while (peer.block_disconnect_socket) {
- try {
- peer.wait();
- } catch (InterruptedException ignored) { }
- }
- }
}
@Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == our_id; }
@Override public long hash() { return our_id; }
if (shutdown) return;
if (Thread.interrupted()) return;
for (SelectionKey key : this.selector.selectedKeys()) {
- if ((key.interestOps() & SelectionKey.OP_ACCEPT) != 0) {
- if (key.isAcceptable()) {
- SocketChannel chan;
- try {
- chan = ((ServerSocketChannel) key.channel()).accept();
- } catch (IOException ignored) {
- key.cancel();
- continue;
- }
- if (chan == null) continue;
- try {
- Peer peer = setup_socket(chan);
- Result_NonePeerHandleErrorZ res = this.peer_manager.new_inbound_connection(peer.descriptor);
- if (res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK) {
- peer.key = chan.register(this.selector, SelectionKey.OP_READ, peer);
- }
- } catch (IOException ignored) { }
- }
- continue; // There is no attachment so the rest of the loop is useless
- }
- Peer peer = (Peer) key.attachment();
- synchronized (peer) {
- peer.block_disconnect_socket = true;
- }
try {
- if (key.isValid() && (key.interestOps() & SelectionKey.OP_WRITE) != 0 && key.isWritable()) {
- Result_NonePeerHandleErrorZ res = this.peer_manager.write_buffer_space_avail(peer.descriptor);
- if (res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_Err) {
- key.channel().close();
- key.cancel();
+ if ((key.interestOps() & SelectionKey.OP_ACCEPT) != 0) {
+ if (key.isAcceptable()) {
+ SocketChannel chan;
+ try {
+ chan = ((ServerSocketChannel) key.channel()).accept();
+ } catch (IOException ignored) {
+ key.cancel();
+ continue;
+ }
+ if (chan == null) continue;
+ try {
+ Peer peer = setup_socket(chan);
+ Result_NonePeerHandleErrorZ res = this.peer_manager.new_inbound_connection(peer.descriptor);
+ if (res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK) {
+ peer.key = chan.register(this.selector, SelectionKey.OP_READ, peer);
+ }
+ } catch (IOException ignored) { }
}
+ continue; // There is no attachment so the rest of the loop is useless
}
- if (key.isValid() && (key.interestOps() & SelectionKey.OP_READ) != 0 && key.isReadable()) {
- buf.clear();
- int read = ((SocketChannel) key.channel()).read(buf);
- if (read == -1) {
- this.peer_manager.socket_disconnected(peer.descriptor);
- key.cancel();
- } else if (read > 0) {
- buf.flip();
- byte[] read_bytes = new byte[read];
- buf.get(read_bytes, 0, read);
- Result_boolPeerHandleErrorZ res = this.peer_manager.read_event(peer.descriptor, read_bytes);
- if (res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK) {
- if (((Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK) res).res) {
- key.interestOps(key.interestOps() & (~SelectionKey.OP_READ));
- }
- } else {
+ Peer peer = (Peer) key.attachment();
+ try {
+ if (key.isValid() && (key.interestOps() & SelectionKey.OP_WRITE) != 0 && key.isWritable()) {
+ Result_NonePeerHandleErrorZ res = this.peer_manager.write_buffer_space_avail(peer.descriptor);
+ if (res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_Err) {
key.channel().close();
key.cancel();
}
}
+ if (key.isValid() && (key.interestOps() & SelectionKey.OP_READ) != 0 && key.isReadable()) {
+ ((Buffer)buf).clear();
+ int read = ((SocketChannel) key.channel()).read(buf);
+ if (read == -1) {
+ this.peer_manager.socket_disconnected(peer.descriptor);
+ key.cancel();
+ } else if (read > 0) {
+ ((Buffer)buf).flip();
+ byte[] read_bytes = new byte[read];
+ buf.get(read_bytes, 0, read);
+ Result_boolPeerHandleErrorZ res = this.peer_manager.read_event(peer.descriptor, read_bytes);
+ if (res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK) {
+ if (((Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK) res).res) {
+ key.interestOps(key.interestOps() & (~SelectionKey.OP_READ));
+ }
+ } else {
+ key.channel().close();
+ key.cancel();
+ }
+ }
+ }
+ } catch (IOException ignored) {
+ try { key.channel().close(); } catch (IOException ignored2) { }
+ key.cancel();
+ peer_manager.socket_disconnected(peer.descriptor);
}
- } catch (IOException ignored) {
- try { key.channel().close(); } catch (IOException ignored2) { }
- key.cancel();
- peer_manager.socket_disconnected(peer.descriptor);
- }
- synchronized (peer) {
- peer.block_disconnect_socket = false;
- peer.notifyAll();
+ } catch (CancelledKeyException e) {
+ try { key.channel().close(); } catch (IOException ignored) { }
+ // The key is only cancelled when we have notified the PeerManager that the socket is closed, so
+ // no need to do anything here with the PeerManager.
}
}
if (lastTimerTick < System.currentTimeMillis() - 30 * 1000) {
public void check_events() {
selector.wakeup();
}
-}
\ No newline at end of file
+}
projects / ldk-java / blobdiff