Delete the old WebSocket implementation.

Source/modules/websockets/WebSocketPerMessageDeflate.cpp

Index: Source/modules/websockets/WebSocketPerMessageDeflate.cpp
diff --git a/Source/modules/websockets/WebSocketPerMessageDeflate.cpp b/Source/modules/websockets/WebSocketPerMessageDeflate.cpp
deleted file mode 100644
index 690e58816d194e6021949c239ff12f73f1cbb3a9..0000000000000000000000000000000000000000
--- a/Source/modules/websockets/WebSocketPerMessageDeflate.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-
-#include "modules/websockets/WebSocketPerMessageDeflate.h"
-
-#include "modules/websockets/WebSocketExtensionParser.h"
-#include "public/platform/Platform.h"
-#include "wtf/HashMap.h"
-#include "wtf/text/CString.h"
-#include "wtf/text/StringHash.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-class CompressionMessageExtensionProcessor final : public WebSocketExtensionProcessor {
-    WTF_MAKE_FAST_ALLOCATED;
-    WTF_MAKE_NONCOPYABLE(CompressionMessageExtensionProcessor);
-public:
-    static PassOwnPtr<CompressionMessageExtensionProcessor> create(WebSocketPerMessageDeflate& compress)
-    {
-        return adoptPtr(new CompressionMessageExtensionProcessor(compress));
-    }
-    virtual ~CompressionMessageExtensionProcessor() { }
-
-    virtual String handshakeString() override;
-    virtual bool processResponse(const HashMap<String, String>&) override;
-    virtual String failureReason() override { return m_failureReason; }
-
-private:
-    explicit CompressionMessageExtensionProcessor(WebSocketPerMessageDeflate&);
-
-    WebSocketPerMessageDeflate& m_compress;
-    bool m_responseProcessed;
-    String m_failureReason;
-};
-
-CompressionMessageExtensionProcessor::CompressionMessageExtensionProcessor(WebSocketPerMessageDeflate& compress)
-    : WebSocketExtensionProcessor("permessage-deflate")
-    , m_compress(compress)
-    , m_responseProcessed(false)
-{
-}
-
-String CompressionMessageExtensionProcessor::handshakeString()
-{
-    return "permessage-deflate; client_max_window_bits";
-}
-
-bool CompressionMessageExtensionProcessor::processResponse(const HashMap<String, String>& parameters)
-{
-    unsigned numProcessedParameters = 0;
-    if (m_responseProcessed) {
-        m_failureReason = "Received duplicate permessage-deflate response";
-        return false;
-    }
-    m_responseProcessed = true;
-    WebSocketDeflater::ContextTakeOverMode mode = WebSocketDeflater::TakeOverContext;
-    int windowBits = 15;
-
-    HashMap<String, String>::const_iterator clientNoContextTakeover = parameters.find("client_no_context_takeover");
-    HashMap<String, String>::const_iterator clientMaxWindowBits = parameters.find("client_max_window_bits");
-    HashMap<String, String>::const_iterator serverNoContextTakeover = parameters.find("server_no_context_takeover");
-    HashMap<String, String>::const_iterator serverMaxWindowBits = parameters.find("server_max_window_bits");
-
-    if (clientNoContextTakeover != parameters.end()) {
-        if (!clientNoContextTakeover->value.isNull()) {
-            m_failureReason = "Received invalid client_no_context_takeover parameter";
-            return false;
-        }
-        mode = WebSocketDeflater::DoNotTakeOverContext;
-        ++numProcessedParameters;
-    }
-    if (clientMaxWindowBits != parameters.end()) {
-        if (!clientMaxWindowBits->value.length()) {
-            m_failureReason = "client_max_window_bits parameter must have value";
-            return false;
-        }
-        bool ok = false;
-        windowBits = clientMaxWindowBits->value.toIntStrict(&ok);
-        if (!ok || windowBits < 8 || windowBits > 15 || clientMaxWindowBits->value[0] == '+' || clientMaxWindowBits->value[0] == '0') {
-            m_failureReason = "Received invalid client_max_window_bits parameter";
-            return false;
-        }
-        ++numProcessedParameters;
-    }
-    if (serverNoContextTakeover != parameters.end()) {
-        if (!serverNoContextTakeover->value.isNull()) {
-            m_failureReason = "Received invalid server_no_context_takeover parameter";
-            return false;
-        }
-        ++numProcessedParameters;
-    }
-    if (serverMaxWindowBits != parameters.end()) {
-        if (!serverMaxWindowBits->value.length()) {
-            m_failureReason = "server_max_window_bits parameter must have value";
-            return false;
-        }
-        bool ok = false;
-        int bits = serverMaxWindowBits->value.toIntStrict(&ok);
-        if (!ok || bits < 8 || bits > 15 || serverMaxWindowBits->value[0] == '+' || serverMaxWindowBits->value[0] == '0') {
-            m_failureReason = "Received invalid server_max_window_bits parameter";
-            return false;
-        }
-        ++numProcessedParameters;
-    }
-
-    if (numProcessedParameters != parameters.size()) {
-        m_failureReason = "Received an unexpected permessage-deflate extension parameter";
-        return false;
-    }
-    Platform::current()->histogramEnumeration("WebCore.WebSocket.PerMessageDeflateContextTakeOverMode", mode, WebSocketDeflater::ContextTakeOverModeMax);
-    m_compress.enable(windowBits, mode);
-    // Since we don't request server_no_context_takeover and server_max_window_bits, they should be ignored.
-    return true;
-}
-
-WebSocketPerMessageDeflate::WebSocketPerMessageDeflate()
-    : m_enabled(false)
-    , m_deflateOngoing(false)
-    , m_inflateOngoing(false)
-{
-}
-
-PassOwnPtr<WebSocketExtensionProcessor> WebSocketPerMessageDeflate::createExtensionProcessor()
-{
-    return CompressionMessageExtensionProcessor::create(*this);
-}
-
-void WebSocketPerMessageDeflate::enable(int windowBits, WebSocketDeflater::ContextTakeOverMode mode)
-{
-    m_deflater = WebSocketDeflater::create(windowBits, mode);
-    m_inflater = WebSocketInflater::create();
-    if (!m_deflater->initialize() || !m_inflater->initialize()) {
-        m_deflater.clear();
-        m_inflater.clear();
-        return;
-    }
-    m_enabled = true;
-    m_deflateOngoing = false;
-    m_inflateOngoing = false;
-}
-
-bool WebSocketPerMessageDeflate::deflate(WebSocketFrame& frame)
-{
-    if (!enabled())
-        return true;
-    if (frame.compress) {
-        m_failureReason = "Some extension already uses the compress bit.";
-        return false;
-    }
-    if (!WebSocketFrame::isNonControlOpCode(frame.opCode))
-        return true;
-
-    if ((frame.opCode == WebSocketFrame::OpCodeText || frame.opCode == WebSocketFrame::OpCodeBinary)
-        && frame.final
-        && frame.payloadLength <= 2) {
-        // A trivial optimization: If a message consists of one frame and its
-        // payload length is very short, we don't compress it.
-        return true;
-    }
-
-    if (frame.payloadLength > 0 && !m_deflater->addBytes(frame.payload, frame.payloadLength)) {
-        m_failureReason = "Failed to deflate a frame";
-        return false;
-    }
-    if (frame.final && !m_deflater->finish()) {
-        m_failureReason = "Failed to finish compression";
-        return false;
-    }
-
-    frame.compress = !m_deflateOngoing;
-    frame.payload = m_deflater->data();
-    frame.payloadLength = m_deflater->size();
-    m_deflateOngoing = !frame.final;
-    return true;
-}
-
-void WebSocketPerMessageDeflate::resetDeflateBuffer()
-{
-    if (m_deflater) {
-        if (m_deflateOngoing)
-            m_deflater->softReset();
-        else
-            m_deflater->reset();
-    }
-}
-
-bool WebSocketPerMessageDeflate::inflate(WebSocketFrame& frame)
-{
-    if (!enabled())
-        return true;
-    if (!WebSocketFrame::isNonControlOpCode(frame.opCode)) {
-        if (frame.compress) {
-            m_failureReason = "Received unexpected compressed frame";
-            return false;
-        }
-        return true;
-    }
-    if (frame.compress) {
-        if (m_inflateOngoing) {
-            m_failureReason = "Received a frame that sets compressed bit while another decompression is ongoing";
-            return false;
-        }
-        m_inflateOngoing = true;
-    }
-
-    if (!m_inflateOngoing)
-        return true;
-
-    if (frame.payloadLength > 0 && !m_inflater->addBytes(frame.payload, frame.payloadLength)) {
-        m_failureReason = "Failed to inflate a frame";
-        return false;
-    }
-    if (frame.final && !m_inflater->finish()) {
-        m_failureReason = "Failed to finish decompression";
-        return false;
-    }
-    frame.compress = false;
-    frame.payload = m_inflater->data();
-    frame.payloadLength = m_inflater->size();
-    m_inflateOngoing = !frame.final;
-    return true;
-}
-
-void WebSocketPerMessageDeflate::resetInflateBuffer()
-{
-    if (m_inflater)
-        m_inflater->reset();
-}
-
-void WebSocketPerMessageDeflate::didFail()
-{
-    resetDeflateBuffer();
-    resetInflateBuffer();
-}
-
-} // namespace blink