WebSocketChannel.cpp [plain text]
#include "config.h"
#if ENABLE(WEB_SOCKETS)
#include "WebSocketChannel.h"
#include "Blob.h"
#include "CookieJar.h"
#include "Document.h"
#include "FileError.h"
#include "FileReaderLoader.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "InspectorInstrumentation.h"
#include "Logging.h"
#include "Page.h"
#include "ProgressTracker.h"
#include "ScriptCallStack.h"
#include "ScriptExecutionContext.h"
#include "Settings.h"
#include "SocketStreamError.h"
#include "SocketStreamHandle.h"
#include "WebSocketChannelClient.h"
#include "WebSocketHandshake.h"
#include <wtf/ArrayBuffer.h>
#include <wtf/Deque.h>
#include <wtf/FastMalloc.h>
#include <wtf/HashMap.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/text/CString.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
using namespace std;
namespace WebCore {
const double TCPMaximumSegmentLifetime = 2 * 60.0;
WebSocketChannel::WebSocketChannel(Document* document, WebSocketChannelClient* client)
: m_document(document)
, m_client(client)
, m_buffer(0)
, m_bufferSize(0)
, m_resumeTimer(this, &WebSocketChannel::resumeTimerFired)
, m_suspended(false)
, m_closing(false)
, m_receivedClosingHandshake(false)
, m_closingTimer(this, &WebSocketChannel::closingTimerFired)
, m_closed(false)
, m_shouldDiscardReceivedData(false)
, m_unhandledBufferedAmount(0)
, m_identifier(0)
, m_useHixie76Protocol(true)
, m_hasContinuousFrame(false)
, m_closeEventCode(CloseEventCodeAbnormalClosure)
, m_outgoingFrameQueueStatus(OutgoingFrameQueueOpen)
#if ENABLE(BLOB)
, m_blobLoaderStatus(BlobLoaderNotStarted)
#endif
{
if (Settings* settings = m_document->settings())
m_useHixie76Protocol = settings->useHixie76WebSocketProtocol();
if (Page* page = m_document->page())
m_identifier = page->progress()->createUniqueIdentifier();
}
WebSocketChannel::~WebSocketChannel()
{
fastFree(m_buffer);
}
bool WebSocketChannel::useHixie76Protocol()
{
return m_useHixie76Protocol;
}
void WebSocketChannel::connect(const KURL& url, const String& protocol)
{
LOG(Network, "WebSocketChannel %p connect", this);
ASSERT(!m_handle);
ASSERT(!m_suspended);
m_handshake = adoptPtr(new WebSocketHandshake(url, protocol, m_document, m_useHixie76Protocol));
m_handshake->reset();
if (!m_useHixie76Protocol && m_deflateFramer.canDeflate())
m_handshake->addExtensionProcessor(m_deflateFramer.createExtensionProcessor());
if (m_identifier)
InspectorInstrumentation::didCreateWebSocket(m_document, m_identifier, url, m_document->url());
ref();
m_handle = SocketStreamHandle::create(m_handshake->url(), this);
}
String WebSocketChannel::subprotocol()
{
LOG(Network, "WebSocketChannel %p subprotocol", this);
if (!m_handshake || m_handshake->mode() != WebSocketHandshake::Connected)
return "";
String serverProtocol = m_handshake->serverWebSocketProtocol();
if (serverProtocol.isNull())
return "";
return serverProtocol;
}
String WebSocketChannel::extensions()
{
LOG(Network, "WebSocketChannel %p extensions", this);
if (!m_handshake || m_handshake->mode() != WebSocketHandshake::Connected)
return "";
String extensions = m_handshake->acceptedExtensions();
if (extensions.isNull())
return "";
return extensions;
}
ThreadableWebSocketChannel::SendResult WebSocketChannel::send(const String& message)
{
LOG(Network, "WebSocketChannel %p send %s", this, message.utf8().data());
CString utf8 = message.utf8(true);
if (utf8.isNull() && message.length())
return InvalidMessage;
if (m_useHixie76Protocol) {
return sendFrameHixie76(utf8.data(), utf8.length()) ? ThreadableWebSocketChannel::SendSuccess : ThreadableWebSocketChannel::SendFail;
}
enqueueTextFrame(utf8);
return ThreadableWebSocketChannel::SendSuccess;
}
ThreadableWebSocketChannel::SendResult WebSocketChannel::send(const ArrayBuffer& binaryData)
{
LOG(Network, "WebSocketChannel %p send arraybuffer %p", this, &binaryData);
ASSERT(!m_useHixie76Protocol);
enqueueRawFrame(WebSocketFrame::OpCodeBinary, static_cast<const char*>(binaryData.data()), binaryData.byteLength());
return ThreadableWebSocketChannel::SendSuccess;
}
ThreadableWebSocketChannel::SendResult WebSocketChannel::send(const Blob& binaryData)
{
LOG(Network, "WebSocketChannel %p send blob %s", this, binaryData.url().string().utf8().data());
ASSERT(!m_useHixie76Protocol);
enqueueBlobFrame(WebSocketFrame::OpCodeBinary, binaryData);
return ThreadableWebSocketChannel::SendSuccess;
}
bool WebSocketChannel::send(const char* data, int length)
{
LOG(Network, "WebSocketChannel %p send binary %p (%dB)", this, data, length);
ASSERT(!m_useHixie76Protocol);
enqueueRawFrame(WebSocketFrame::OpCodeBinary, data, length);
return true;
}
unsigned long WebSocketChannel::bufferedAmount() const
{
LOG(Network, "WebSocketChannel %p bufferedAmount", this);
ASSERT(m_handle);
ASSERT(!m_suspended);
return m_handle->bufferedAmount();
}
void WebSocketChannel::close(int code, const String& reason)
{
LOG(Network, "WebSocketChannel %p close", this);
ASSERT(!m_suspended);
if (!m_handle)
return;
startClosingHandshake(code, reason);
if (m_closing && !m_closingTimer.isActive())
m_closingTimer.startOneShot(2 * TCPMaximumSegmentLifetime);
}
void WebSocketChannel::fail(const String& reason)
{
LOG(Network, "WebSocketChannel %p fail: %s", this, reason.utf8().data());
ASSERT(!m_suspended);
if (m_document) {
InspectorInstrumentation::didReceiveWebSocketFrameError(m_document, m_identifier, reason);
m_document->addConsoleMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, reason, m_handshake->clientOrigin());
}
if (!m_useHixie76Protocol) {
m_shouldDiscardReceivedData = true;
if (m_buffer)
skipBuffer(m_bufferSize); m_deflateFramer.didFail();
m_hasContinuousFrame = false;
m_continuousFrameData.clear();
}
if (m_handle && !m_closed)
m_handle->disconnect(); }
void WebSocketChannel::disconnect()
{
LOG(Network, "WebSocketChannel %p disconnect", this);
if (m_identifier && m_document)
InspectorInstrumentation::didCloseWebSocket(m_document, m_identifier);
if (m_handshake)
m_handshake->clearScriptExecutionContext();
m_client = 0;
m_document = 0;
if (m_handle)
m_handle->disconnect();
}
void WebSocketChannel::suspend()
{
m_suspended = true;
}
void WebSocketChannel::resume()
{
m_suspended = false;
if ((m_buffer || m_closed) && m_client && !m_resumeTimer.isActive())
m_resumeTimer.startOneShot(0);
}
void WebSocketChannel::willOpenSocketStream(SocketStreamHandle* handle)
{
LOG(Network, "WebSocketChannel %p willOpensocketStream", this);
ASSERT(handle);
if (m_document->frame())
m_document->frame()->loader()->client()->dispatchWillOpenSocketStream(handle);
}
void WebSocketChannel::didOpenSocketStream(SocketStreamHandle* handle)
{
LOG(Network, "WebSocketChannel %p didOpenSocketStream", this);
ASSERT(handle == m_handle);
if (!m_document)
return;
if (m_identifier)
InspectorInstrumentation::willSendWebSocketHandshakeRequest(m_document, m_identifier, *m_handshake->clientHandshakeRequest());
CString handshakeMessage = m_handshake->clientHandshakeMessage();
if (!handle->send(handshakeMessage.data(), handshakeMessage.length()))
fail("Failed to send WebSocket handshake.");
}
void WebSocketChannel::didCloseSocketStream(SocketStreamHandle* handle)
{
LOG(Network, "WebSocketChannel %p didCloseSocketStream", this);
if (m_identifier && m_document)
InspectorInstrumentation::didCloseWebSocket(m_document, m_identifier);
ASSERT_UNUSED(handle, handle == m_handle || !m_handle);
m_closed = true;
if (m_closingTimer.isActive())
m_closingTimer.stop();
if (!m_useHixie76Protocol && m_outgoingFrameQueueStatus != OutgoingFrameQueueClosed)
abortOutgoingFrameQueue();
if (m_handle) {
m_unhandledBufferedAmount = m_handle->bufferedAmount();
if (m_suspended)
return;
WebSocketChannelClient* client = m_client;
m_client = 0;
m_document = 0;
m_handle = 0;
if (client)
client->didClose(m_unhandledBufferedAmount, m_receivedClosingHandshake ? WebSocketChannelClient::ClosingHandshakeComplete : WebSocketChannelClient::ClosingHandshakeIncomplete, m_closeEventCode, m_closeEventReason);
}
deref();
}
void WebSocketChannel::didReceiveSocketStreamData(SocketStreamHandle* handle, const char* data, int len)
{
LOG(Network, "WebSocketChannel %p didReceiveSocketStreamData %d", this, len);
RefPtr<WebSocketChannel> protect(this); ASSERT(handle == m_handle);
if (!m_document) {
return;
}
if (len <= 0) {
handle->disconnect();
return;
}
if (!m_client) {
m_shouldDiscardReceivedData = true;
handle->disconnect();
return;
}
if (m_shouldDiscardReceivedData)
return;
if (!appendToBuffer(data, len)) {
m_shouldDiscardReceivedData = true;
fail("Ran out of memory while receiving WebSocket data.");
return;
}
while (!m_suspended && m_client && m_buffer)
if (!processBuffer())
break;
}
void WebSocketChannel::didUpdateBufferedAmount(SocketStreamHandle*, size_t bufferedAmount)
{
if (m_client)
m_client->didUpdateBufferedAmount(bufferedAmount);
}
void WebSocketChannel::didFailSocketStream(SocketStreamHandle* handle, const SocketStreamError& error)
{
LOG(Network, "WebSocketChannel %p didFailSocketStream", this);
ASSERT(handle == m_handle || !m_handle);
if (m_document) {
String message;
if (error.isNull())
message = "WebSocket network error";
else if (error.localizedDescription().isNull())
message = "WebSocket network error: error code " + String::number(error.errorCode());
else
message = "WebSocket network error: " + error.localizedDescription();
String failingURL = error.failingURL();
ASSERT(failingURL.isNull() || m_handshake->url().string() == failingURL);
if (failingURL.isNull())
failingURL = m_handshake->url().string();
m_document->addConsoleMessage(NetworkMessageSource, LogMessageType, ErrorMessageLevel, message, failingURL);
}
m_shouldDiscardReceivedData = true;
handle->disconnect();
}
void WebSocketChannel::didReceiveAuthenticationChallenge(SocketStreamHandle*, const AuthenticationChallenge&)
{
}
void WebSocketChannel::didCancelAuthenticationChallenge(SocketStreamHandle*, const AuthenticationChallenge&)
{
}
#if ENABLE(BLOB)
void WebSocketChannel::didStartLoading()
{
LOG(Network, "WebSocketChannel %p didStartLoading", this);
ASSERT(m_blobLoader);
ASSERT(m_blobLoaderStatus == BlobLoaderStarted);
}
void WebSocketChannel::didReceiveData()
{
LOG(Network, "WebSocketChannel %p didReceiveData", this);
ASSERT(m_blobLoader);
ASSERT(m_blobLoaderStatus == BlobLoaderStarted);
}
void WebSocketChannel::didFinishLoading()
{
LOG(Network, "WebSocketChannel %p didFinishLoading", this);
ASSERT(m_blobLoader);
ASSERT(m_blobLoaderStatus == BlobLoaderStarted);
m_blobLoaderStatus = BlobLoaderFinished;
processOutgoingFrameQueue();
deref();
}
void WebSocketChannel::didFail(int errorCode)
{
LOG(Network, "WebSocketChannel %p didFail %d", this, errorCode);
ASSERT(m_blobLoader);
ASSERT(m_blobLoaderStatus == BlobLoaderStarted);
m_blobLoader.clear();
m_blobLoaderStatus = BlobLoaderFailed;
fail("Failed to load Blob: error code = " + String::number(errorCode)); deref();
}
#endif
bool WebSocketChannel::appendToBuffer(const char* data, size_t len)
{
size_t newBufferSize = m_bufferSize + len;
if (newBufferSize < m_bufferSize) {
LOG(Network, "WebSocket buffer overflow (%lu+%lu)", static_cast<unsigned long>(m_bufferSize), static_cast<unsigned long>(len));
return false;
}
char* newBuffer = 0;
if (!tryFastMalloc(newBufferSize).getValue(newBuffer))
return false;
if (m_buffer)
memcpy(newBuffer, m_buffer, m_bufferSize);
memcpy(newBuffer + m_bufferSize, data, len);
fastFree(m_buffer);
m_buffer = newBuffer;
m_bufferSize = newBufferSize;
return true;
}
void WebSocketChannel::skipBuffer(size_t len)
{
ASSERT(len <= m_bufferSize);
m_bufferSize -= len;
if (!m_bufferSize) {
fastFree(m_buffer);
m_buffer = 0;
return;
}
memmove(m_buffer, m_buffer + len, m_bufferSize);
}
bool WebSocketChannel::processBuffer()
{
ASSERT(!m_suspended);
ASSERT(m_client);
ASSERT(m_buffer);
LOG(Network, "WebSocketChannel %p processBuffer %lu", this, static_cast<unsigned long>(m_bufferSize));
if (m_shouldDiscardReceivedData)
return false;
if (m_receivedClosingHandshake) {
skipBuffer(m_bufferSize);
return false;
}
RefPtr<WebSocketChannel> protect(this);
if (m_handshake->mode() == WebSocketHandshake::Incomplete) {
int headerLength = m_handshake->readServerHandshake(m_buffer, m_bufferSize);
if (headerLength <= 0)
return false;
if (m_handshake->mode() == WebSocketHandshake::Connected) {
if (m_identifier)
InspectorInstrumentation::didReceiveWebSocketHandshakeResponse(m_document, m_identifier, m_handshake->serverHandshakeResponse());
if (!m_handshake->serverSetCookie().isEmpty()) {
if (cookiesEnabled(m_document)) {
ExceptionCode ec; m_document->setCookie(m_handshake->serverSetCookie(), ec);
}
}
LOG(Network, "WebSocketChannel %p connected", this);
skipBuffer(headerLength);
m_client->didConnect();
LOG(Network, "remaining in read buf %lu", static_cast<unsigned long>(m_bufferSize));
return m_buffer;
}
ASSERT(m_handshake->mode() == WebSocketHandshake::Failed);
LOG(Network, "WebSocketChannel %p connection failed", this);
skipBuffer(headerLength);
m_shouldDiscardReceivedData = true;
fail(m_handshake->failureReason());
return false;
}
if (m_handshake->mode() != WebSocketHandshake::Connected)
return false;
if (m_useHixie76Protocol)
return processFrameHixie76();
return processFrame();
}
void WebSocketChannel::resumeTimerFired(Timer<WebSocketChannel>* timer)
{
ASSERT_UNUSED(timer, timer == &m_resumeTimer);
RefPtr<WebSocketChannel> protect(this); while (!m_suspended && m_client && m_buffer)
if (!processBuffer())
break;
if (!m_suspended && m_client && m_closed && m_handle)
didCloseSocketStream(m_handle.get());
}
void WebSocketChannel::startClosingHandshake(int code, const String& reason)
{
LOG(Network, "WebSocketChannel %p closing %d %d", this, m_closing, m_receivedClosingHandshake);
if (m_closing)
return;
ASSERT(m_handle);
if (m_useHixie76Protocol) {
Vector<char> buf;
buf.append('\xff');
buf.append('\0');
if (!m_handle->send(buf.data(), buf.size())) {
m_handle->disconnect();
return;
}
} else {
Vector<char> buf;
if (!m_receivedClosingHandshake && code != CloseEventCodeNotSpecified) {
unsigned char highByte = code >> 8;
unsigned char lowByte = code;
buf.append(static_cast<char>(highByte));
buf.append(static_cast<char>(lowByte));
buf.append(reason.utf8().data(), reason.utf8().length());
}
enqueueRawFrame(WebSocketFrame::OpCodeClose, buf.data(), buf.size());
}
m_closing = true;
if (m_client)
m_client->didStartClosingHandshake();
}
void WebSocketChannel::closingTimerFired(Timer<WebSocketChannel>* timer)
{
LOG(Network, "WebSocketChannel %p closing timer", this);
ASSERT_UNUSED(timer, &m_closingTimer == timer);
if (m_handle)
m_handle->disconnect();
}
bool WebSocketChannel::processFrame()
{
ASSERT(m_buffer);
WebSocketFrame frame;
const char* frameEnd;
String errorString;
WebSocketFrame::ParseFrameResult result = WebSocketFrame::parseFrame(m_buffer, m_bufferSize, frame, frameEnd, errorString);
if (result == WebSocketFrame::FrameIncomplete)
return false;
if (result == WebSocketFrame::FrameError) {
fail(errorString);
return false;
}
ASSERT(m_buffer < frameEnd);
ASSERT(frameEnd <= m_buffer + m_bufferSize);
OwnPtr<InflateResultHolder> inflateResult = m_deflateFramer.inflate(frame);
if (!inflateResult->succeeded()) {
fail(inflateResult->failureReason());
return false;
}
if (WebSocketFrame::isReservedOpCode(frame.opCode)) {
fail("Unrecognized frame opcode: " + String::number(frame.opCode));
return false;
}
if (frame.reserved2 || frame.reserved3) {
fail("One or more reserved bits are on: reserved2 = " + String::number(frame.reserved2) + ", reserved3 = " + String::number(frame.reserved3));
return false;
}
if (frame.masked) {
fail("A server must not mask any frames that it sends to the client.");
return false;
}
if (WebSocketFrame::isControlOpCode(frame.opCode) && !frame.final) {
fail("Received fragmented control frame: opcode = " + String::number(frame.opCode));
return false;
}
if (WebSocketFrame::isControlOpCode(frame.opCode) && WebSocketFrame::needsExtendedLengthField(frame.payloadLength)) {
fail("Received control frame having too long payload: " + String::number(frame.payloadLength) + " bytes");
return false;
}
if (m_hasContinuousFrame && frame.opCode != WebSocketFrame::OpCodeContinuation && !WebSocketFrame::isControlOpCode(frame.opCode)) {
fail("Received new data frame but previous continuous frame is unfinished.");
return false;
}
InspectorInstrumentation::didReceiveWebSocketFrame(m_document, m_identifier, frame);
switch (frame.opCode) {
case WebSocketFrame::OpCodeContinuation:
if (!m_hasContinuousFrame) {
fail("Received unexpected continuation frame.");
return false;
}
m_continuousFrameData.append(frame.payload, frame.payloadLength);
skipBuffer(frameEnd - m_buffer);
if (frame.final) {
OwnPtr<Vector<char> > continuousFrameData = adoptPtr(new Vector<char>);
m_continuousFrameData.swap(*continuousFrameData);
m_hasContinuousFrame = false;
if (m_continuousFrameOpCode == WebSocketFrame::OpCodeText) {
String message;
if (continuousFrameData->size())
message = String::fromUTF8(continuousFrameData->data(), continuousFrameData->size());
else
message = "";
if (message.isNull())
fail("Could not decode a text frame as UTF-8.");
else
m_client->didReceiveMessage(message);
} else if (m_continuousFrameOpCode == WebSocketFrame::OpCodeBinary)
m_client->didReceiveBinaryData(continuousFrameData.release());
}
break;
case WebSocketFrame::OpCodeText:
if (frame.final) {
String message;
if (frame.payloadLength)
message = String::fromUTF8(frame.payload, frame.payloadLength);
else
message = "";
skipBuffer(frameEnd - m_buffer);
if (message.isNull())
fail("Could not decode a text frame as UTF-8.");
else
m_client->didReceiveMessage(message);
} else {
m_hasContinuousFrame = true;
m_continuousFrameOpCode = WebSocketFrame::OpCodeText;
ASSERT(m_continuousFrameData.isEmpty());
m_continuousFrameData.append(frame.payload, frame.payloadLength);
skipBuffer(frameEnd - m_buffer);
}
break;
case WebSocketFrame::OpCodeBinary:
if (frame.final) {
OwnPtr<Vector<char> > binaryData = adoptPtr(new Vector<char>(frame.payloadLength));
memcpy(binaryData->data(), frame.payload, frame.payloadLength);
skipBuffer(frameEnd - m_buffer);
m_client->didReceiveBinaryData(binaryData.release());
} else {
m_hasContinuousFrame = true;
m_continuousFrameOpCode = WebSocketFrame::OpCodeBinary;
ASSERT(m_continuousFrameData.isEmpty());
m_continuousFrameData.append(frame.payload, frame.payloadLength);
skipBuffer(frameEnd - m_buffer);
}
break;
case WebSocketFrame::OpCodeClose:
if (frame.payloadLength >= 2) {
unsigned char highByte = static_cast<unsigned char>(frame.payload[0]);
unsigned char lowByte = static_cast<unsigned char>(frame.payload[1]);
m_closeEventCode = highByte << 8 | lowByte;
} else
m_closeEventCode = CloseEventCodeNoStatusRcvd;
if (frame.payloadLength >= 3)
m_closeEventReason = String::fromUTF8(&frame.payload[2], frame.payloadLength - 2);
else
m_closeEventReason = "";
skipBuffer(frameEnd - m_buffer);
m_receivedClosingHandshake = true;
startClosingHandshake(m_closeEventCode, m_closeEventReason);
if (m_closing) {
m_outgoingFrameQueueStatus = OutgoingFrameQueueClosing;
processOutgoingFrameQueue();
}
break;
case WebSocketFrame::OpCodePing:
enqueueRawFrame(WebSocketFrame::OpCodePong, frame.payload, frame.payloadLength);
skipBuffer(frameEnd - m_buffer);
break;
case WebSocketFrame::OpCodePong:
skipBuffer(frameEnd - m_buffer);
break;
default:
ASSERT_NOT_REACHED();
skipBuffer(frameEnd - m_buffer);
break;
}
return m_buffer;
}
bool WebSocketChannel::processFrameHixie76()
{
const char* nextFrame = m_buffer;
const char* p = m_buffer;
const char* end = p + m_bufferSize;
unsigned char frameByte = static_cast<unsigned char>(*p++);
if ((frameByte & 0x80) == 0x80) {
size_t length = 0;
bool errorFrame = false;
bool lengthFinished = false;
while (p < end) {
if (length > numeric_limits<size_t>::max() / 128) {
LOG(Network, "frame length overflow %lu", static_cast<unsigned long>(length));
errorFrame = true;
break;
}
size_t newLength = length * 128;
unsigned char msgByte = static_cast<unsigned char>(*p);
unsigned int lengthMsgByte = msgByte & 0x7f;
if (newLength > numeric_limits<size_t>::max() - lengthMsgByte) {
LOG(Network, "frame length overflow %lu+%u", static_cast<unsigned long>(newLength), lengthMsgByte);
errorFrame = true;
break;
}
newLength += lengthMsgByte;
if (newLength < length) { LOG(Network, "frame length integer wrap %lu->%lu", static_cast<unsigned long>(length), static_cast<unsigned long>(newLength));
errorFrame = true;
break;
}
length = newLength;
++p;
if (!(msgByte & 0x80)) {
lengthFinished = true;
break;
}
}
if (!errorFrame && !lengthFinished)
return false;
if (p + length < p) {
LOG(Network, "frame buffer pointer wrap %p+%lu->%p", p, static_cast<unsigned long>(length), p + length);
errorFrame = true;
}
if (errorFrame) {
skipBuffer(m_bufferSize); m_shouldDiscardReceivedData = true;
m_client->didReceiveMessageError();
fail("WebSocket frame length too large");
return false;
}
ASSERT(p + length >= p);
if (p + length <= end) {
p += length;
nextFrame = p;
ASSERT(nextFrame > m_buffer);
skipBuffer(nextFrame - m_buffer);
if (frameByte == 0xff && !length) {
m_receivedClosingHandshake = true;
startClosingHandshake(CloseEventCodeNotSpecified, "");
if (m_closing)
m_handle->close(); } else
m_client->didReceiveMessageError();
return m_buffer;
}
return false;
}
const char* msgStart = p;
while (p < end && *p != '\xff')
++p;
if (p < end && *p == '\xff') {
int msgLength = p - msgStart;
++p;
nextFrame = p;
if (frameByte == 0x00) {
String msg = String::fromUTF8(msgStart, msgLength);
skipBuffer(nextFrame - m_buffer);
m_client->didReceiveMessage(msg);
} else {
skipBuffer(nextFrame - m_buffer);
m_client->didReceiveMessageError();
}
return m_buffer;
}
return false;
}
void WebSocketChannel::enqueueTextFrame(const CString& string)
{
ASSERT(!m_useHixie76Protocol);
ASSERT(m_outgoingFrameQueueStatus == OutgoingFrameQueueOpen);
OwnPtr<QueuedFrame> frame = adoptPtr(new QueuedFrame);
frame->opCode = WebSocketFrame::OpCodeText;
frame->frameType = QueuedFrameTypeString;
frame->stringData = string;
m_outgoingFrameQueue.append(frame.release());
processOutgoingFrameQueue();
}
void WebSocketChannel::enqueueRawFrame(WebSocketFrame::OpCode opCode, const char* data, size_t dataLength)
{
ASSERT(!m_useHixie76Protocol);
ASSERT(m_outgoingFrameQueueStatus == OutgoingFrameQueueOpen);
OwnPtr<QueuedFrame> frame = adoptPtr(new QueuedFrame);
frame->opCode = opCode;
frame->frameType = QueuedFrameTypeVector;
frame->vectorData.resize(dataLength);
if (dataLength)
memcpy(frame->vectorData.data(), data, dataLength);
m_outgoingFrameQueue.append(frame.release());
processOutgoingFrameQueue();
}
void WebSocketChannel::enqueueBlobFrame(WebSocketFrame::OpCode opCode, const Blob& blob)
{
ASSERT(!m_useHixie76Protocol);
ASSERT(m_outgoingFrameQueueStatus == OutgoingFrameQueueOpen);
OwnPtr<QueuedFrame> frame = adoptPtr(new QueuedFrame);
frame->opCode = opCode;
frame->frameType = QueuedFrameTypeBlob;
frame->blobData = Blob::create(blob.url(), blob.type(), blob.size());
m_outgoingFrameQueue.append(frame.release());
processOutgoingFrameQueue();
}
void WebSocketChannel::processOutgoingFrameQueue()
{
ASSERT(!m_useHixie76Protocol);
if (m_outgoingFrameQueueStatus == OutgoingFrameQueueClosed)
return;
while (!m_outgoingFrameQueue.isEmpty()) {
OwnPtr<QueuedFrame> frame = m_outgoingFrameQueue.takeFirst();
switch (frame->frameType) {
case QueuedFrameTypeString: {
if (!sendFrame(frame->opCode, frame->stringData.data(), frame->stringData.length()))
fail("Failed to send WebSocket frame.");
break;
}
case QueuedFrameTypeVector:
if (!sendFrame(frame->opCode, frame->vectorData.data(), frame->vectorData.size()))
fail("Failed to send WebSocket frame.");
break;
case QueuedFrameTypeBlob: {
#if ENABLE(BLOB)
switch (m_blobLoaderStatus) {
case BlobLoaderNotStarted:
ref(); ASSERT(!m_blobLoader);
m_blobLoader = adoptPtr(new FileReaderLoader(FileReaderLoader::ReadAsArrayBuffer, this));
m_blobLoaderStatus = BlobLoaderStarted;
m_blobLoader->start(m_document, frame->blobData.get());
m_outgoingFrameQueue.prepend(frame.release());
return;
case BlobLoaderStarted:
case BlobLoaderFailed:
m_outgoingFrameQueue.prepend(frame.release());
return;
case BlobLoaderFinished: {
RefPtr<ArrayBuffer> result = m_blobLoader->arrayBufferResult();
m_blobLoader.clear();
m_blobLoaderStatus = BlobLoaderNotStarted;
if (!sendFrame(frame->opCode, static_cast<const char*>(result->data()), result->byteLength()))
fail("Failed to send WebSocket frame.");
break;
}
}
#else
fail("FileReader is not available. Could not send a Blob as WebSocket binary message.");
#endif
break;
}
default:
ASSERT_NOT_REACHED();
break;
}
}
ASSERT(m_outgoingFrameQueue.isEmpty());
if (m_outgoingFrameQueueStatus == OutgoingFrameQueueClosing) {
m_outgoingFrameQueueStatus = OutgoingFrameQueueClosed;
m_handle->close();
}
}
void WebSocketChannel::abortOutgoingFrameQueue()
{
ASSERT(!m_useHixie76Protocol);
m_outgoingFrameQueue.clear();
m_outgoingFrameQueueStatus = OutgoingFrameQueueClosed;
#if ENABLE(BLOB)
if (m_blobLoaderStatus == BlobLoaderStarted) {
m_blobLoader->cancel();
didFail(FileError::ABORT_ERR);
}
#endif
}
bool WebSocketChannel::sendFrame(WebSocketFrame::OpCode opCode, const char* data, size_t dataLength)
{
ASSERT(m_handle);
ASSERT(!m_suspended);
WebSocketFrame frame(opCode, true, false, true, data, dataLength);
InspectorInstrumentation::didSendWebSocketFrame(m_document, m_identifier, frame);
OwnPtr<DeflateResultHolder> deflateResult = m_deflateFramer.deflate(frame);
if (!deflateResult->succeeded()) {
fail(deflateResult->failureReason());
return false;
}
Vector<char> frameData;
frame.makeFrameData(frameData);
return m_handle->send(frameData.data(), frameData.size());
}
bool WebSocketChannel::sendFrameHixie76(const char* data, size_t dataLength)
{
ASSERT(m_handle);
ASSERT(!m_suspended);
Vector<char> frame;
frame.append('\0'); frame.append(data, dataLength);
frame.append('\xff'); return m_handle->send(frame.data(), frame.size());
}
}
#endif // ENABLE(WEB_SOCKETS)