In QUIC v39, read and write integers and floating numbers in big endian.

net/quic/core/quic_framer.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_QUIC_CORE_QUIC_FRAMER_H_
 #define NET_QUIC_CORE_QUIC_FRAMER_H_
 
 #include <cstddef>
 #include <cstdint>
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "net/quic/core/quic_packets.h"
+#include "net/quic/platform/api/quic_endian.h"
 #include "net/quic/platform/api/quic_export.h"
 #include "net/quic/platform/api/quic_string_piece.h"
 
 namespace net {
 
 namespace test {
 class QuicFramerPeer;
 }  // namespace test
 
 class QuicDataReader;
@@ skipping 288 matching lines @@
 
   // The minimum packet number length required to represent |packet_number|.
   static QuicPacketNumberLength GetMinPacketNumberLength(
       QuicPacketNumber packet_number);
 
   void SetSupportedVersions(const QuicVersionVector& versions) {
     supported_versions_ = versions;
     quic_version_ = versions[0];
   }
 
+  // Returns byte order to read/write integers and floating numbers.
+  Endianness endianness() const;
+
   void set_validate_flags(bool value) { validate_flags_ = value; }
 
   Perspective perspective() const { return perspective_; }
 
   QuicTag last_version_tag() { return last_version_tag_; }
 
  private:
   friend class test::QuicFramerPeer;
 
   typedef std::map<QuicPacketNumber, uint8_t> NackRangeMap;
@@ skipping 191 matching lines @@
   QuicTime::Delta last_timestamp_;
   // The diversification nonce from the last received packet.
   DiversificationNonce last_nonce_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicFramer);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_FRAMER_H_