Split net/spdy into core and chromium subdirectories.

net/spdy/header_coalescer.cc

-// Copyright (c) 2016 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/spdy/header_coalescer.h"
-
-#include <utility>
-
-#include "base/strings/string_util.h"
-#include "net/http/http_util.h"
-#include "net/spdy/platform/api/spdy_estimate_memory_usage.h"
-#include "net/spdy/platform/api/spdy_string.h"
-
-namespace net {
-
-const size_t kMaxHeaderListSize = 256 * 1024;
-
-void HeaderCoalescer::OnHeader(SpdyStringPiece key, SpdyStringPiece value) {
-  if (error_seen_) {
-    return;
-  }
-
-  if (key.empty()) {
-    DVLOG(1) << "Header name must not be empty.";
-    error_seen_ = true;
-    return;
-  }
-
-  SpdyStringPiece key_name = key;
-  if (key[0] == ':') {
-    if (regular_header_seen_) {
-      error_seen_ = true;
-      return;
-    }
-    key_name.remove_prefix(1);
-  } else if (!regular_header_seen_) {
-    regular_header_seen_ = true;
-  }
-
-  if (!HttpUtil::IsValidHeaderName(key_name)) {
-    error_seen_ = true;
-    return;
-  }
-
-  // 32 byte overhead according to RFC 7540 Section 6.5.2.
-  header_list_size_ += key.size() + value.size() + 32;
-  if (header_list_size_ > kMaxHeaderListSize) {
-    error_seen_ = true;
-    return;
-  }
-
-  // End of line delimiter is forbidden according to RFC 7230 Section 3.2.
-  // Line folding, RFC 7230 Section 3.2.4., is a special case of this.
-  if (value.find("\r\n") != SpdyStringPiece::npos) {
-    error_seen_ = true;
-    return;
-  }
-
-  auto iter = headers_.find(key);
-  if (iter == headers_.end()) {
-    headers_[key] = value;
-  } else {
-    // This header had multiple values, so it must be reconstructed.
-    SpdyStringPiece v = iter->second;
-    SpdyString s(v.data(), v.length());
-    if (key == "cookie") {
-      // Obeys section 8.1.2.5 in RFC 7540 for cookie reconstruction.
-      s.append("; ");
-    } else {
-      SpdyStringPiece("\0", 1).AppendToString(&s);
-    }
-    value.AppendToString(&s);
-    headers_[key] = s;
-  }
-}
-
-SpdyHeaderBlock HeaderCoalescer::release_headers() {
-  DCHECK(headers_valid_);
-  headers_valid_ = false;
-  return std::move(headers_);
-}
-
-size_t HeaderCoalescer::EstimateMemoryUsage() const {
-  return SpdyEstimateMemoryUsage(headers_);
-}
-
-}  // namespace net