Add connection option kSMHL indicating supporting SETTINGS_MAX_HEADER_LIST_SIZE. SETTINGS_MAX_HEADE…

net/quic/core/quic_headers_stream.cc

 // Copyright 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/core/quic_headers_stream.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 189 matching lines @@
           }
           stream_->UpdateEnableServerPush(value > 0);
           break;
         } else {
           CloseConnection("Unsupported field of HTTP/2 SETTINGS frame: " +
                           base::IntToString(id));
         }
         break;
       // TODO(fayang): Need to support SETTINGS_MAX_HEADER_LIST_SIZE when
       // clients are actually sending it.
+      case SETTINGS_MAX_HEADER_LIST_SIZE:
+        if (FLAGS_quic_send_max_header_list_size) {
+          break;
+        }
       default:
         CloseConnection("Unsupported field of HTTP/2 SETTINGS frame: " +
                         base::IntToString(id));
     }
   }
 
   void OnSettingsAck() override {
     if (!FLAGS_quic_respect_http2_settings_frame) {
       CloseConnection("SPDY SETTINGS frame received.");
     }
@@ skipping 350 matching lines @@
   spdy_session_->set_server_push_enabled(value);
 }
 
 void QuicHeadersStream::MaybeReleaseSequencerBuffer() {
   if (FLAGS_quic_headers_stream_release_sequencer_buffer &&
       spdy_session_->ShouldReleaseHeadersStreamSequencerBuffer()) {
     sequencer()->ReleaseBufferIfEmpty();
   }
 }
 
+size_t QuicHeadersStream::SendMaxHeaderListSize(size_t value) {
+  SpdySettingsIR settings_frame;
+  settings_frame.AddSetting(SETTINGS_MAX_HEADER_LIST_SIZE, false, false, value);
+
+  SpdySerializedFrame frame(spdy_framer_.SerializeFrame(settings_frame));
+  WriteOrBufferData(StringPiece(frame.data(), frame.size()), false, nullptr);
+  return frame.size();
+}
+
 bool QuicHeadersStream::OnDataFrameHeader(QuicStreamId stream_id,
                                           size_t length,
                                           bool fin) {
   if (!spdy_session_->force_hol_blocking()) {
     return false;
   }
   if (!IsConnected()) {
     return true;
   }
   DVLOG(1) << "DATA frame header for stream " << stream_id << " length "
@@ skipping 16 matching lines @@
     return true;
   }
   frame_len_ -= len;
   // Ignore fin_ while there is more data coming, if frame_len_ > 0.
   spdy_session_->OnStreamFrameData(stream_id, data, len,
                                    frame_len_ > 0 ? false : fin_);
   return true;
 }
 
 }  // namespace net