henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 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 | |
| 32 | SocketStream::SocketStream(AsyncSocket* socket) : socket_(NULL) { |
| 33 | Attach(socket); |
| 34 | } |
| 35 | |
| 36 | SocketStream::~SocketStream() { |
| 37 | delete socket_; |
| 38 | } |
| 39 | |
| 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 | |
| 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 | |
| 64 | 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 | |
| 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 | |
| 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 | |
| 112 | void SocketStream::Close() { |
| 113 | ASSERT(socket_ != NULL); |
| 114 | socket_->Close(); |
| 115 | } |
| 116 | |
| 117 | void SocketStream::OnConnectEvent(AsyncSocket* socket) { |
| 118 | ASSERT(socket == socket_); |
| 119 | SignalEvent(this, SE_OPEN | SE_READ | SE_WRITE, 0); |
| 120 | } |
| 121 | |
| 122 | void SocketStream::OnReadEvent(AsyncSocket* socket) { |
| 123 | ASSERT(socket == socket_); |
| 124 | SignalEvent(this, SE_READ, 0); |
| 125 | } |
| 126 | |
| 127 | void SocketStream::OnWriteEvent(AsyncSocket* socket) { |
| 128 | ASSERT(socket == socket_); |
| 129 | SignalEvent(this, SE_WRITE, 0); |
| 130 | } |
| 131 | |
| 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 |