1 /*
2 * libjingle
3 * Copyright 2010, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "talk/base/socketstream.h"
29
30 namespace talk_base {
31
SocketStream(AsyncSocket * socket)32 SocketStream::SocketStream(AsyncSocket* socket) : socket_(NULL) {
33 Attach(socket);
34 }
35
~SocketStream()36 SocketStream::~SocketStream() {
37 delete socket_;
38 }
39
Attach(AsyncSocket * socket)40 void SocketStream::Attach(AsyncSocket* socket) {
41 if (socket_)
42 delete socket_;
43 socket_ = socket;
44 if (socket_) {
45 socket_->SignalConnectEvent.connect(this, &SocketStream::OnConnectEvent);
46 socket_->SignalReadEvent.connect(this, &SocketStream::OnReadEvent);
47 socket_->SignalWriteEvent.connect(this, &SocketStream::OnWriteEvent);
48 socket_->SignalCloseEvent.connect(this, &SocketStream::OnCloseEvent);
49 }
50 }
51
Detach()52 AsyncSocket* SocketStream::Detach() {
53 AsyncSocket* socket = socket_;
54 if (socket_) {
55 socket_->SignalConnectEvent.disconnect(this);
56 socket_->SignalReadEvent.disconnect(this);
57 socket_->SignalWriteEvent.disconnect(this);
58 socket_->SignalCloseEvent.disconnect(this);
59 socket_ = NULL;
60 }
61 return socket;
62 }
63
GetState() const64 StreamState SocketStream::GetState() const {
65 ASSERT(socket_ != NULL);
66 switch (socket_->GetState()) {
67 case Socket::CS_CONNECTED:
68 return SS_OPEN;
69 case Socket::CS_CONNECTING:
70 return SS_OPENING;
71 case Socket::CS_CLOSED:
72 default:
73 return SS_CLOSED;
74 }
75 }
76
Read(void * buffer,size_t buffer_len,size_t * read,int * error)77 StreamResult SocketStream::Read(void* buffer, size_t buffer_len,
78 size_t* read, int* error) {
79 ASSERT(socket_ != NULL);
80 int result = socket_->Recv(buffer, buffer_len);
81 if (result < 0) {
82 if (socket_->IsBlocking())
83 return SR_BLOCK;
84 if (error)
85 *error = socket_->GetError();
86 return SR_ERROR;
87 }
88 if ((result > 0) || (buffer_len == 0)) {
89 if (read)
90 *read = result;
91 return SR_SUCCESS;
92 }
93 return SR_EOS;
94 }
95
Write(const void * data,size_t data_len,size_t * written,int * error)96 StreamResult SocketStream::Write(const void* data, size_t data_len,
97 size_t* written, int* error) {
98 ASSERT(socket_ != NULL);
99 int result = socket_->Send(data, data_len);
100 if (result < 0) {
101 if (socket_->IsBlocking())
102 return SR_BLOCK;
103 if (error)
104 *error = socket_->GetError();
105 return SR_ERROR;
106 }
107 if (written)
108 *written = result;
109 return SR_SUCCESS;
110 }
111
Close()112 void SocketStream::Close() {
113 ASSERT(socket_ != NULL);
114 socket_->Close();
115 }
116
OnConnectEvent(AsyncSocket * socket)117 void SocketStream::OnConnectEvent(AsyncSocket* socket) {
118 ASSERT(socket == socket_);
119 SignalEvent(this, SE_OPEN | SE_READ | SE_WRITE, 0);
120 }
121
OnReadEvent(AsyncSocket * socket)122 void SocketStream::OnReadEvent(AsyncSocket* socket) {
123 ASSERT(socket == socket_);
124 SignalEvent(this, SE_READ, 0);
125 }
126
OnWriteEvent(AsyncSocket * socket)127 void SocketStream::OnWriteEvent(AsyncSocket* socket) {
128 ASSERT(socket == socket_);
129 SignalEvent(this, SE_WRITE, 0);
130 }
131
OnCloseEvent(AsyncSocket * socket,int err)132 void SocketStream::OnCloseEvent(AsyncSocket* socket, int err) {
133 ASSERT(socket == socket_);
134 SignalEvent(this, SE_CLOSE, err);
135 }
136
137
138 } // namespace talk_base
139