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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/quic/spdy_utils.h"
#include "base/memory/scoped_ptr.h"
#include "net/spdy/spdy_frame_builder.h"
#include "net/spdy/spdy_framer.h"
#include "net/spdy/spdy_protocol.h"
using std::string;
namespace net {
// static
SpdyMajorVersion SpdyUtils::GetSpdyVersionForQuicVersion(
QuicVersion quic_version) {
if (quic_version > QUIC_VERSION_24) {
return SPDY4;
}
return SPDY3;
}
// static
string SpdyUtils::SerializeUncompressedHeaders(const SpdyHeaderBlock& headers,
QuicVersion quic_version) {
SpdyMajorVersion spdy_version = GetSpdyVersionForQuicVersion(quic_version);
int length = SpdyFramer::GetSerializedLength(spdy_version, &headers);
SpdyFrameBuilder builder(length, kDefaultSpdyMajorVersion);
SpdyFramer::WriteHeaderBlock(&builder, kDefaultSpdyMajorVersion, &headers);
scoped_ptr<SpdyFrame> block(builder.take());
return string(block->data(), length);
}
// static
SpdyHeaderBlock SpdyUtils::ConvertSpdy3ResponseHeadersToSpdy4(
SpdyHeaderBlock response_headers) {
// SPDY/4 headers include neither the version field nor the response details.
response_headers.erase(":version");
size_t end_of_code = response_headers[":status"].find(' ');
if (end_of_code != string::npos) {
response_headers[":status"].erase(end_of_code);
}
return response_headers;
}
} // namespace net
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