net/spdy/spdy_alt_svc_wire_format.h

   1 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // This file contains data structures and utility functions used for serializing
   6 // and parsing alternative service header values, common to HTTP/1.1 header
   7 // fields and HTTP/2 and QUIC ALTSVC frames.  See specification at
   8 // https://tools.ietf.org/id/draft-ietf-httpbis-alt-svc-06.html
   9
  10 #ifndef NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_
  11 #define NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_
  12
  13 #include "base/basictypes.h"
  14 #include "base/strings/string_piece.h"
  15 #include "net/base/net_export.h"
  16
  17 using base::StringPiece;
  18
  19 namespace net {
  20
  21 namespace test {
  22 class SpdyAltSvcWireFormatPeer;
  23 }  // namespace test
  24
  25 class NET_EXPORT_PRIVATE SpdyAltSvcWireFormat {
  26  public:
  27   friend class test::SpdyAltSvcWireFormatPeer;
  28   static bool ParseHeaderFieldValue(StringPiece value,
  29                                     std::string* protocol_id,
  30                                     std::string* host,
  31                                     uint16* port,
  32                                     uint32* max_age,
  33                                     double* p);
  34   static std::string SerializeHeaderFieldValue(const std::string& protocol_id,
  35                                                const std::string& host,
  36                                                uint16 port,
  37                                                uint32 max_age,
  38                                                double p);
  39
  40  private:
  41   static void SkipWhiteSpace(StringPiece::const_iterator* c,
  42                              StringPiece::const_iterator end);
  43   static bool PercentDecode(StringPiece::const_iterator c,
  44                             StringPiece::const_iterator end,
  45                             std::string* output);
  46   static bool ParseAltAuthority(StringPiece::const_iterator c,
  47                                 StringPiece::const_iterator end,
  48                                 std::string* host,
  49                                 uint16* port);
  50   static bool ParsePositiveInteger16(StringPiece::const_iterator c,
  51                                      StringPiece::const_iterator end,
  52                                      uint16* value);
  53   static bool ParsePositiveInteger32(StringPiece::const_iterator c,
  54                                      StringPiece::const_iterator end,
  55                                      uint32* value);
  56   static bool ParseProbability(StringPiece::const_iterator c,
  57                                StringPiece::const_iterator end,
  58                                double* p);
  59 };
  60
  61 }  // namespace net
  62
  63 #endif  // NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_