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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "net/quic/quic_data_stream.h" | 5 #include "net/quic/quic_data_stream.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "net/quic/quic_session.h" | 8 #include "net/quic/quic_session.h" |
9 #include "net/quic/quic_utils.h" | 9 #include "net/quic/quic_utils.h" |
10 #include "net/quic/quic_write_blocked_list.h" | 10 #include "net/quic/quic_write_blocked_list.h" |
11 | 11 |
12 using base::StringPiece; | 12 using base::StringPiece; |
13 using std::min; | 13 using std::min; |
14 | 14 |
15 namespace net { | 15 namespace net { |
16 | 16 |
17 #define ENDPOINT (session()->is_server() ? "Server: " : " Client: ") | 17 #define ENDPOINT (session()->is_server() ? "Server: " : " Client: ") |
18 | 18 |
19 namespace { | 19 namespace { |
20 | 20 |
21 // This is somewhat arbitrary. It's possible, but unlikely, we will either fail | 21 // This is somewhat arbitrary. It's possible, but unlikely, we will either fail |
22 // to set a priority client-side, or cancel a stream before stripping the | 22 // to set a priority client-side, or cancel a stream before stripping the |
23 // priority from the wire server-side. In either case, start out with a | 23 // priority from the wire server-side. In either case, start out with a |
24 // priority in the middle. | 24 // priority in the middle. |
25 QuicPriority kDefaultPriority = 3; | 25 QuicPriority kDefaultPriority = 3; |
26 | 26 |
27 } // namespace | 27 } // namespace |
28 | 28 |
29 QuicDataStream::QuicDataStream(QuicStreamId id, | 29 QuicDataStream::QuicDataStream(QuicStreamId id, QuicSession* session) |
30 QuicSession* session) | |
31 : ReliableQuicStream(id, session), | 30 : ReliableQuicStream(id, session), |
32 visitor_(NULL), | 31 visitor_(NULL), |
33 headers_decompressed_(false), | 32 headers_decompressed_(false), |
34 priority_(kDefaultPriority), | 33 priority_(kDefaultPriority), |
35 decompression_failed_(false), | 34 decompression_failed_(false), |
36 priority_parsed_(false) { | 35 priority_parsed_(false) { |
37 DCHECK_NE(kCryptoStreamId, id); | 36 DCHECK_NE(kCryptoStreamId, id); |
38 // Don't receive any callbacks from the sequencer until headers | 37 // Don't receive any callbacks from the sequencer until headers |
39 // are complete. | 38 // are complete. |
40 sequencer()->SetBlockedUntilFlush(); | 39 sequencer()->SetBlockedUntilFlush(); |
41 } | 40 } |
42 | 41 |
43 QuicDataStream::~QuicDataStream() { | 42 QuicDataStream::~QuicDataStream() { |
44 } | 43 } |
45 | 44 |
46 size_t QuicDataStream::WriteHeaders( | 45 size_t QuicDataStream::WriteHeaders( |
47 const SpdyHeaderBlock& header_block, | 46 const SpdyHeaderBlock& header_block, |
48 bool fin, | 47 bool fin, |
49 QuicAckNotifier::DelegateInterface* ack_notifier_delegate) { | 48 QuicAckNotifier::DelegateInterface* ack_notifier_delegate) { |
50 size_t bytes_written = session()->WriteHeaders( | 49 size_t bytes_written = |
51 id(), header_block, fin, ack_notifier_delegate); | 50 session()->WriteHeaders(id(), header_block, fin, ack_notifier_delegate); |
52 if (fin) { | 51 if (fin) { |
53 // TODO(rch): Add test to ensure fin_sent_ is set whenever a fin is sent. | 52 // TODO(rch): Add test to ensure fin_sent_ is set whenever a fin is sent. |
54 set_fin_sent(true); | 53 set_fin_sent(true); |
55 CloseWriteSide(); | 54 CloseWriteSide(); |
56 } | 55 } |
57 return bytes_written; | 56 return bytes_written; |
58 } | 57 } |
59 | 58 |
60 size_t QuicDataStream::Readv(const struct iovec* iov, size_t iov_len) { | 59 size_t QuicDataStream::Readv(const struct iovec* iov, size_t iov_len) { |
61 if (FinishedReadingHeaders()) { | 60 if (FinishedReadingHeaders()) { |
62 // If the headers have been read, simply delegate to the sequencer's | 61 // If the headers have been read, simply delegate to the sequencer's |
63 // Readv method. | 62 // Readv method. |
64 return sequencer()->Readv(iov, iov_len); | 63 return sequencer()->Readv(iov, iov_len); |
65 } | 64 } |
66 // Otherwise, copy decompressed header data into |iov|. | 65 // Otherwise, copy decompressed header data into |iov|. |
67 size_t bytes_consumed = 0; | 66 size_t bytes_consumed = 0; |
68 size_t iov_index = 0; | 67 size_t iov_index = 0; |
69 while (iov_index < iov_len && | 68 while (iov_index < iov_len && |
70 decompressed_headers_.length() > bytes_consumed) { | 69 decompressed_headers_.length() > bytes_consumed) { |
71 size_t bytes_to_read = min(iov[iov_index].iov_len, | 70 size_t bytes_to_read = min(iov[iov_index].iov_len, |
72 decompressed_headers_.length() - bytes_consumed); | 71 decompressed_headers_.length() - bytes_consumed); |
73 char* iov_ptr = static_cast<char*>(iov[iov_index].iov_base); | 72 char* iov_ptr = static_cast<char*>(iov[iov_index].iov_base); |
74 memcpy(iov_ptr, | 73 memcpy( |
75 decompressed_headers_.data() + bytes_consumed, bytes_to_read); | 74 iov_ptr, decompressed_headers_.data() + bytes_consumed, bytes_to_read); |
76 bytes_consumed += bytes_to_read; | 75 bytes_consumed += bytes_to_read; |
77 ++iov_index; | 76 ++iov_index; |
78 } | 77 } |
79 decompressed_headers_.erase(0, bytes_consumed); | 78 decompressed_headers_.erase(0, bytes_consumed); |
80 if (FinishedReadingHeaders()) { | 79 if (FinishedReadingHeaders()) { |
81 sequencer()->FlushBufferedFrames(); | 80 sequencer()->FlushBufferedFrames(); |
82 } | 81 } |
83 return bytes_consumed; | 82 return bytes_consumed; |
84 } | 83 } |
85 | 84 |
86 int QuicDataStream::GetReadableRegions(iovec* iov, size_t iov_len) { | 85 int QuicDataStream::GetReadableRegions(iovec* iov, size_t iov_len) { |
87 if (FinishedReadingHeaders()) { | 86 if (FinishedReadingHeaders()) { |
88 return sequencer()->GetReadableRegions(iov, iov_len); | 87 return sequencer()->GetReadableRegions(iov, iov_len); |
89 } | 88 } |
90 if (iov_len == 0) { | 89 if (iov_len == 0) { |
91 return 0; | 90 return 0; |
92 } | 91 } |
93 iov[0].iov_base = static_cast<void*>( | 92 iov[0].iov_base = |
94 const_cast<char*>(decompressed_headers_.data())); | 93 static_cast<void*>(const_cast<char*>(decompressed_headers_.data())); |
95 iov[0].iov_len = decompressed_headers_.length(); | 94 iov[0].iov_len = decompressed_headers_.length(); |
96 return 1; | 95 return 1; |
97 } | 96 } |
98 | 97 |
99 bool QuicDataStream::IsDoneReading() const { | 98 bool QuicDataStream::IsDoneReading() const { |
100 if (!headers_decompressed_ || !decompressed_headers_.empty()) { | 99 if (!headers_decompressed_ || !decompressed_headers_.empty()) { |
101 return false; | 100 return false; |
102 } | 101 } |
103 return sequencer()->IsClosed(); | 102 return sequencer()->IsClosed(); |
104 } | 103 } |
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130 | 129 |
131 bool QuicDataStream::GetSSLInfo(SSLInfo* ssl_info) { | 130 bool QuicDataStream::GetSSLInfo(SSLInfo* ssl_info) { |
132 return session()->GetSSLInfo(ssl_info); | 131 return session()->GetSSLInfo(ssl_info); |
133 } | 132 } |
134 | 133 |
135 uint32 QuicDataStream::ProcessHeaderData() { | 134 uint32 QuicDataStream::ProcessHeaderData() { |
136 if (decompressed_headers_.empty()) { | 135 if (decompressed_headers_.empty()) { |
137 return 0; | 136 return 0; |
138 } | 137 } |
139 | 138 |
140 size_t bytes_processed = ProcessData(decompressed_headers_.data(), | 139 size_t bytes_processed = |
141 decompressed_headers_.length()); | 140 ProcessData(decompressed_headers_.data(), decompressed_headers_.length()); |
142 if (bytes_processed == decompressed_headers_.length()) { | 141 if (bytes_processed == decompressed_headers_.length()) { |
143 decompressed_headers_.clear(); | 142 decompressed_headers_.clear(); |
144 } else { | 143 } else { |
145 decompressed_headers_ = decompressed_headers_.erase(0, bytes_processed); | 144 decompressed_headers_ = decompressed_headers_.erase(0, bytes_processed); |
146 } | 145 } |
147 return bytes_processed; | 146 return bytes_processed; |
148 } | 147 } |
149 | 148 |
150 void QuicDataStream::OnStreamHeaders(StringPiece headers_data) { | 149 void QuicDataStream::OnStreamHeaders(StringPiece headers_data) { |
151 headers_data.AppendToString(&decompressed_headers_); | 150 headers_data.AppendToString(&decompressed_headers_); |
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178 visitor_ = NULL; | 177 visitor_ = NULL; |
179 visitor->OnClose(this); | 178 visitor->OnClose(this); |
180 } | 179 } |
181 } | 180 } |
182 | 181 |
183 bool QuicDataStream::FinishedReadingHeaders() { | 182 bool QuicDataStream::FinishedReadingHeaders() { |
184 return headers_decompressed_ && decompressed_headers_.empty(); | 183 return headers_decompressed_ && decompressed_headers_.empty(); |
185 } | 184 } |
186 | 185 |
187 } // namespace net | 186 } // namespace net |
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