@Override
public void setReadListener(final ReadListener readListener) {
if (readListener == null) {
throw UndertowServletMessages.MESSAGES.paramCannotBeNull("readListener");
}
if (listener != null) {
throw UndertowServletMessages.MESSAGES.listenerAlreadySet();
}
listener = readListener;
channel.getReadSetter().set(new UpgradeServletChannelListener());
channel.resumeReads();
}
@Override
public void parse(HttpHandler handler) throws Exception {
if (exchange.getAttachment(FORM_DATA) != null) {
handler.handleRequest(exchange);
return;
}
this.handler = handler;
StreamSourceChannel channel = exchange.getRequestChannel();
if (channel == null) {
throw new IOException(UndertowMessages.MESSAGES.requestChannelAlreadyProvided());
} else {
doParse(channel);
if (state != 4) {
channel.getReadSetter().set(this);
channel.resumeReads();
} else {
exchange.dispatch(SameThreadExecutor.INSTANCE, handler);
}
}
}
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();
}
}
public void handleEvent(StreamSourceChannel channel) {
HttpResponseBuilder builder = pendingResponse;
final Pooled<ByteBuffer> pooled = bufferPool.allocate();
final ByteBuffer buffer = pooled.getResource();
boolean free = true;
try {
if (builder == null) {
// read ready when no request pending
buffer.clear();
try {
int res = channel.read(buffer);
if (res == -1) {
UndertowLogger.CLIENT_LOGGER.debugf(
"Connection to %s was closed by the target server", connection.getPeerAddress());
IoUtils.safeClose(HttpClientConnection.this);
} else if (res != 0) {
UndertowLogger.CLIENT_LOGGER.debugf(
"Target server %s sent unexpected data when no request pending, closing connection",
connection.getPeerAddress());
IoUtils.safeClose(HttpClientConnection.this);
}
// otherwise it is a spurious notification
} catch (IOException e) {
if (UndertowLogger.CLIENT_LOGGER.isDebugEnabled()) {
UndertowLogger.CLIENT_LOGGER.debugf(e, "Connection closed with IOException");
}
safeClose(connection);
}
return;
}
final ResponseParseState state = builder.getParseState();
int res;
do {
buffer.clear();
try {
res = channel.read(buffer);
} catch (IOException e) {
if (UndertowLogger.CLIENT_LOGGER.isDebugEnabled()) {
UndertowLogger.CLIENT_LOGGER.debugf(e, "Connection closed with IOException");
}
safeClose(channel);
return;
}
if (res == 0) {
if (!channel.isReadResumed()) {
channel.getReadSetter().set(this);
channel.resumeReads();
}
return;
} else if (res == -1) {
channel.suspendReads();
IoUtils.safeClose(HttpClientConnection.this);
try {
final StreamSinkChannel requestChannel = connection.getSinkChannel();
requestChannel.shutdownWrites();
// will return false if there's a response queued ahead of this one, so we'll set up a
// listener then
if (!requestChannel.flush()) {
requestChannel
.getWriteSetter()
.set(ChannelListeners.flushingChannelListener(null, null));
requestChannel.resumeWrites();
}
// Cancel the current active request
currentRequest.setFailed(new IOException(MESSAGES.connectionClosed()));
} catch (IOException e) {
if (UndertowLogger.CLIENT_LOGGER.isDebugEnabled()) {
UndertowLogger.CLIENT_LOGGER.debugf(
e, "Connection closed with IOException when attempting to shut down reads");
}
IoUtils.safeClose(channel);
// Cancel the current active request
currentRequest.setFailed(e);
return;
}
return;
}
buffer.flip();
HttpResponseParser.INSTANCE.handle(buffer, state, builder);
if (buffer.hasRemaining()) {
free = false;
pushBackStreamSourceConduit.pushBack(pooled);
}
} while (!state.isComplete());
final ClientResponse response = builder.build();
String connectionString = response.getResponseHeaders().getFirst(CONNECTION);
// check if an upgrade worked
if (anyAreSet(HttpClientConnection.this.state, UPGRADE_REQUESTED)) {
if ((connectionString == null || !UPGRADE.equalToString(connectionString))
&& !response.getResponseHeaders().contains(UPGRADE)) {
// just unset the upgrade requested flag
HttpClientConnection.this.state &= ~UPGRADE_REQUESTED;
}
}
if (connectionString != null) {
if (HttpString.tryFromString(connectionString).equals(Headers.CLOSE)) {
HttpClientConnection.this.state |= CLOSE_REQ;
}
}
if (builder.getStatusCode() == 100) {
pendingResponse = new HttpResponseBuilder();
currentRequest.setContinueResponse(response);
} else {
prepareResponseChannel(response, currentRequest);
channel.getReadSetter().set(null);
channel.suspendReads();
pendingResponse = null;
currentRequest.setResponse(response);
}
} catch (Exception e) {
UndertowLogger.CLIENT_LOGGER.exceptionProcessingRequest(e);
IoUtils.safeClose(connection);
currentRequest.setFailed(new IOException(e));
} finally {
if (free) pooled.free();
}
}
public void setup(StreamSourceChannel channel) {
channel.suspendReads();
channel.getReadSetter().set(this);
channel.resumeReads();
}