net/spdy/spdy_headers_handler_interface.h

   1 // Copyright 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 #ifndef NET_SPDY_SPDY_HEADERS_HANDLER_INTERFACE_H_
   6 #define NET_SPDY_SPDY_HEADERS_HANDLER_INTERFACE_H_
   7
   8 #include "base/strings/string_piece.h"
   9
  10 namespace net {
  11
  12 // This interface defines how an object that accepts header data should behave.
  13 // It is used by both SpdyHeadersBlockParser and HpackDecoder.
  14 class SpdyHeadersHandlerInterface {
  15  public:
  16   virtual ~SpdyHeadersHandlerInterface() {}
  17
  18   // A callback method which notifies when the parser starts handling a new
  19   // header block fragment.
  20   virtual void OnHeaderBlockStart() = 0;
  21
  22   // A callback method which notifies on a header key value pair. Multiple
  23   // values for a given key will be emitted as multiple calls to OnHeader.
  24   virtual void OnHeader(base::StringPiece key, base::StringPiece value) = 0;
  25
  26   // A callback method which notifies when the parser finishes handling a
  27   // header block fragment. Also indicates the total number of bytes in this
  28   // block.
  29   virtual void OnHeaderBlockEnd(size_t header_bytes_parsed) = 0;
  30 };
  31
  32 }  // namespace net
  33
  34 #endif  // NET_SPDY_SPDY_HEADERS_HANDLER_INTERFACE_H_