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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 <stddef.h> | |
9 | |
10 #include "net/base/net_export.h" | |
11 #include "net/spdy/platform/api/spdy_string_piece.h" | |
12 | |
13 namespace net { | |
14 | |
15 // This interface defines how an object that accepts header data should behave. | |
16 // It is used by both SpdyHeadersBlockParser and HpackDecoder. | |
17 class NET_EXPORT_PRIVATE SpdyHeadersHandlerInterface { | |
18 public: | |
19 virtual ~SpdyHeadersHandlerInterface() {} | |
20 | |
21 // A callback method which notifies when the parser starts handling a new | |
22 // header block. Will only be called once per block, even if it extends into | |
23 // CONTINUATION frames. | |
24 virtual void OnHeaderBlockStart() = 0; | |
25 | |
26 // A callback method which notifies on a header key value pair. Multiple | |
27 // values for a given key will be emitted as multiple calls to OnHeader. | |
28 virtual void OnHeader(SpdyStringPiece key, SpdyStringPiece value) = 0; | |
29 | |
30 // TODO(yasong): deprecate this method with | |
31 // --chromium_http2_flag_log_compressed_size. | |
32 // A callback method which notifies when the parser finishes handling a | |
33 // header block (i.e. the containing frame has the END_HEADERS flag set). | |
34 // Also indicates the total number of bytes in this block. | |
35 virtual void OnHeaderBlockEnd(size_t uncompressed_header_bytes) = 0; | |
36 | |
37 // A callback method which notifies when the parser finishes handling a | |
38 // header block (i.e. the containing frame has the END_HEADERS flag set). | |
39 // Also indicates the total number of bytes in this block. | |
40 virtual void OnHeaderBlockEnd(size_t uncompressed_header_bytes, | |
41 size_t compressed_header_bytes) = 0; | |
42 }; | |
43 | |
44 } // namespace net | |
45 | |
46 #endif // NET_SPDY_SPDY_HEADERS_HANDLER_INTERFACE_H_ | |
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