@Override
public void exchangeEvent(
final HttpServerExchange exchange,
final ExchangeCompletionListener.NextListener nextListener) {
connection.resetChannel();
final HttpServerConnection connection = this.connection;
if (exchange.isPersistent() && !exchange.isUpgrade()) {
newRequest();
StreamConnection channel = connection.getChannel();
if (connection.getExtraBytes() == null) {
// if we are not pipelining we just register a listener
channel.getSourceChannel().getReadSetter().set(this);
channel.getSourceChannel().resumeReads();
} else {
if (channel.getSourceChannel().isReadResumed()) {
channel.getSourceChannel().suspendReads();
}
if (exchange.isInIoThread()) {
channel.getIoThread().execute(this);
} else {
Executor executor = exchange.getDispatchExecutor();
if (executor == null) {
executor = exchange.getConnection().getWorker();
}
executor.execute(this);
}
}
}
nextListener.proceed();
}
public void handleEvent(final StreamSourceChannel channel) {
Pooled<ByteBuffer> existing = connection.getExtraBytes();
final Pooled<ByteBuffer> pooled =
existing == null ? connection.getBufferPool().allocate() : existing;
final ByteBuffer buffer = pooled.getResource();
boolean free = true;
try {
int res;
do {
if (existing == null) {
buffer.clear();
try {
res = channel.read(buffer);
} catch (IOException e) {
UndertowLogger.REQUEST_IO_LOGGER.debug("Error reading request", e);
IoUtils.safeClose(connection);
return;
}
} else {
res = buffer.remaining();
}
if (res == 0) {
if (!channel.isReadResumed()) {
channel.getReadSetter().set(this);
channel.resumeReads();
}
return;
} else if (res == -1) {
try {
channel.suspendReads();
channel.shutdownReads();
final StreamSinkChannel responseChannel = this.connection.getChannel().getSinkChannel();
responseChannel.shutdownWrites();
// will return false if there's a response queued ahead of this one, so we'll set up a
// listener then
if (!responseChannel.flush()) {
responseChannel
.getWriteSetter()
.set(ChannelListeners.flushingChannelListener(null, null));
responseChannel.resumeWrites();
}
} catch (IOException e) {
UndertowLogger.REQUEST_IO_LOGGER.debug("Error reading request", e);
// f**k it, it's all ruined
IoUtils.safeClose(channel);
return;
}
return;
}
if (existing != null) {
existing = null;
connection.setExtraBytes(null);
} else {
buffer.flip();
}
parser.handle(buffer, state, httpServerExchange);
if (buffer.hasRemaining()) {
free = false;
connection.setExtraBytes(pooled);
}
int total = read + res;
read = total;
if (read > maxRequestSize) {
UndertowLogger.REQUEST_LOGGER.requestHeaderWasTooLarge(
connection.getPeerAddress(), maxRequestSize);
IoUtils.safeClose(connection);
return;
}
} while (!state.isComplete());
// we remove ourselves as the read listener from the channel;
// if the http handler doesn't set any then reads will suspend, which is the right thing to do
channel.getReadSetter().set(null);
channel.suspendReads();
final HttpServerExchange httpServerExchange = this.httpServerExchange;
httpServerExchange.putAttachment(
UndertowOptions.ATTACHMENT_KEY, connection.getUndertowOptions());
httpServerExchange.setRequestScheme(connection.getSslSession() != null ? "https" : "http");
this.httpServerExchange = null;
HttpTransferEncoding.setupRequest(httpServerExchange);
HttpHandlers.executeRootHandler(
connection.getRootHandler(),
httpServerExchange,
Thread.currentThread() instanceof XnioExecutor);
} catch (Exception e) {
sendBadRequestAndClose(connection.getChannel(), e);
return;
} finally {
if (free) pooled.free();
}
}
@Override
public void run() {
handleEvent(connection.getChannel().getSourceChannel());
}
