1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
// 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.
#include "net/socket/buffered_write_stream_socket.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/message_loop.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
namespace net {
namespace {
void AppendBuffer(GrowableIOBuffer* dst, IOBuffer* src, int src_len) {
int old_capacity = dst->capacity();
dst->SetCapacity(old_capacity + src_len);
memcpy(dst->StartOfBuffer() + old_capacity, src->data(), src_len);
}
} // anonymous namespace
BufferedWriteStreamSocket::BufferedWriteStreamSocket(
StreamSocket* socket_to_wrap)
: wrapped_socket_(socket_to_wrap),
io_buffer_(new GrowableIOBuffer()),
backup_buffer_(new GrowableIOBuffer()),
ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
callback_pending_(false),
wrapped_write_in_progress_(false),
error_(0) {
}
BufferedWriteStreamSocket::~BufferedWriteStreamSocket() {
}
int BufferedWriteStreamSocket::Read(IOBuffer* buf, int buf_len,
const CompletionCallback& callback) {
return wrapped_socket_->Read(buf, buf_len, callback);
}
int BufferedWriteStreamSocket::Write(IOBuffer* buf, int buf_len,
const CompletionCallback& callback) {
if (error_) {
return error_;
}
GrowableIOBuffer* idle_buffer =
wrapped_write_in_progress_ ? backup_buffer_.get() : io_buffer_.get();
AppendBuffer(idle_buffer, buf, buf_len);
if (!callback_pending_) {
MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&BufferedWriteStreamSocket::DoDelayedWrite,
weak_factory_.GetWeakPtr()));
callback_pending_ = true;
}
return buf_len;
}
bool BufferedWriteStreamSocket::SetReceiveBufferSize(int32 size) {
return wrapped_socket_->SetReceiveBufferSize(size);
}
bool BufferedWriteStreamSocket::SetSendBufferSize(int32 size) {
return wrapped_socket_->SetSendBufferSize(size);
}
int BufferedWriteStreamSocket::Connect(const CompletionCallback& callback) {
return wrapped_socket_->Connect(callback);
}
void BufferedWriteStreamSocket::Disconnect() {
wrapped_socket_->Disconnect();
}
bool BufferedWriteStreamSocket::IsConnected() const {
return wrapped_socket_->IsConnected();
}
bool BufferedWriteStreamSocket::IsConnectedAndIdle() const {
return wrapped_socket_->IsConnectedAndIdle();
}
int BufferedWriteStreamSocket::GetPeerAddress(IPEndPoint* address) const {
return wrapped_socket_->GetPeerAddress(address);
}
int BufferedWriteStreamSocket::GetLocalAddress(IPEndPoint* address) const {
return wrapped_socket_->GetLocalAddress(address);
}
const BoundNetLog& BufferedWriteStreamSocket::NetLog() const {
return wrapped_socket_->NetLog();
}
void BufferedWriteStreamSocket::SetSubresourceSpeculation() {
wrapped_socket_->SetSubresourceSpeculation();
}
void BufferedWriteStreamSocket::SetOmniboxSpeculation() {
wrapped_socket_->SetOmniboxSpeculation();
}
bool BufferedWriteStreamSocket::WasEverUsed() const {
return wrapped_socket_->WasEverUsed();
}
bool BufferedWriteStreamSocket::UsingTCPFastOpen() const {
return wrapped_socket_->UsingTCPFastOpen();
}
int64 BufferedWriteStreamSocket::NumBytesRead() const {
return wrapped_socket_->NumBytesRead();
}
base::TimeDelta BufferedWriteStreamSocket::GetConnectTimeMicros() const {
return wrapped_socket_->GetConnectTimeMicros();
}
bool BufferedWriteStreamSocket::WasNpnNegotiated() const {
return wrapped_socket_->WasNpnNegotiated();
}
NextProto BufferedWriteStreamSocket::GetNegotiatedProtocol() const {
return wrapped_socket_->GetNegotiatedProtocol();
}
bool BufferedWriteStreamSocket::GetSSLInfo(SSLInfo* ssl_info) {
return wrapped_socket_->GetSSLInfo(ssl_info);
}
void BufferedWriteStreamSocket::DoDelayedWrite() {
int result = wrapped_socket_->Write(
io_buffer_, io_buffer_->RemainingCapacity(),
base::Bind(&BufferedWriteStreamSocket::OnIOComplete,
base::Unretained(this)));
if (result == ERR_IO_PENDING) {
callback_pending_ = true;
wrapped_write_in_progress_ = true;
} else {
OnIOComplete(result);
}
}
void BufferedWriteStreamSocket::OnIOComplete(int result) {
callback_pending_ = false;
wrapped_write_in_progress_ = false;
if (backup_buffer_->RemainingCapacity()) {
AppendBuffer(io_buffer_.get(), backup_buffer_.get(),
backup_buffer_->RemainingCapacity());
backup_buffer_->SetCapacity(0);
}
if (result < 0) {
error_ = result;
io_buffer_->SetCapacity(0);
} else {
io_buffer_->set_offset(io_buffer_->offset() + result);
if (io_buffer_->RemainingCapacity()) {
DoDelayedWrite();
} else {
io_buffer_->SetCapacity(0);
}
}
}
} // namespace net
|
