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| 1 // Copyright 2014 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 #include "network/public/cpp/udp_socket_wrapper.h" | |
| 6 | |
| 7 #include <assert.h> | |
| 8 | |
| 9 #include "third_party/mojo/src/mojo/public/cpp/environment/logging.h" | |
| 10 | |
| 11 namespace mojo { | |
| 12 namespace { | |
| 13 | |
| 14 const uint32_t kDefaultReceiveQueueSlots = 32; | |
| 15 | |
| 16 } // namespace | |
| 17 | |
| 18 UDPSocketWrapper::NegotiateCallbackHandler::NegotiateCallbackHandler( | |
| 19 UDPSocketWrapper* delegate) | |
| 20 : delegate_(delegate) { | |
| 21 } | |
| 22 | |
| 23 UDPSocketWrapper::NegotiateCallbackHandler::~NegotiateCallbackHandler() {} | |
| 24 | |
| 25 void UDPSocketWrapper::NegotiateCallbackHandler::Run( | |
| 26 uint32_t actual_size) const { | |
| 27 delegate_->OnNegotiateMaxPendingSendRequestsCompleted(actual_size); | |
| 28 } | |
| 29 | |
| 30 UDPSocketWrapper::SendCallbackHandler::SendCallbackHandler( | |
| 31 UDPSocketWrapper* delegate, | |
| 32 const ErrorCallback& forward_callback) | |
| 33 : delegate_(delegate), | |
| 34 forward_callback_(forward_callback) { | |
| 35 } | |
| 36 | |
| 37 UDPSocketWrapper::SendCallbackHandler::~SendCallbackHandler() {} | |
| 38 | |
| 39 void UDPSocketWrapper::SendCallbackHandler::Run(NetworkErrorPtr result) const { | |
| 40 delegate_->OnSendToCompleted(result.Pass(), forward_callback_); | |
| 41 } | |
| 42 | |
| 43 UDPSocketWrapper::ReceiverBindingCallback::ReceiverBindingCallback( | |
| 44 UDPSocketWrapper* delegate, | |
| 45 const Callback<void(NetworkErrorPtr, NetAddressPtr)>& wrapper_callback) | |
| 46 : delegate_(delegate), wrapper_callback_(wrapper_callback) { | |
| 47 } | |
| 48 | |
| 49 UDPSocketWrapper::ReceiverBindingCallback::~ReceiverBindingCallback() { | |
| 50 } | |
| 51 | |
| 52 void UDPSocketWrapper::ReceiverBindingCallback::Run( | |
| 53 NetworkErrorPtr result, | |
| 54 NetAddressPtr addr, | |
| 55 InterfaceRequest<UDPSocketReceiver> request) const { | |
| 56 delegate_->StartReceivingData(request.Pass()); | |
| 57 wrapper_callback_.Run(result.Pass(), addr.Pass()); | |
| 58 } | |
| 59 | |
| 60 UDPSocketWrapper::ReceivedData::ReceivedData() {} | |
| 61 UDPSocketWrapper::ReceivedData::~ReceivedData() {} | |
| 62 | |
| 63 UDPSocketWrapper::SendRequest::SendRequest() {} | |
| 64 UDPSocketWrapper::SendRequest::~SendRequest() {} | |
| 65 | |
| 66 UDPSocketWrapper::UDPSocketWrapper(UDPSocketPtr socket) | |
| 67 : binding_(this), | |
| 68 socket_(socket.Pass()), | |
| 69 max_receive_queue_size_(kDefaultReceiveQueueSlots), | |
| 70 max_pending_sends_(1), | |
| 71 current_pending_sends_(0) { | |
| 72 Initialize(0); | |
| 73 } | |
| 74 | |
| 75 UDPSocketWrapper::UDPSocketWrapper(UDPSocketPtr socket, | |
| 76 uint32_t receive_queue_slots, | |
| 77 uint32_t requested_max_pending_sends) | |
| 78 : binding_(this), | |
| 79 socket_(socket.Pass()), | |
| 80 max_receive_queue_size_(receive_queue_slots), | |
| 81 max_pending_sends_(1), | |
| 82 current_pending_sends_(0) { | |
| 83 Initialize(requested_max_pending_sends); | |
| 84 } | |
| 85 | |
| 86 UDPSocketWrapper::~UDPSocketWrapper() { | |
| 87 while (!receive_queue_.empty()) { | |
| 88 delete receive_queue_.front(); | |
| 89 receive_queue_.pop(); | |
| 90 } | |
| 91 while (!send_requests_.empty()) { | |
| 92 delete send_requests_.front(); | |
| 93 send_requests_.pop(); | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 void UDPSocketWrapper::AllowAddressReuse(const ErrorCallback& callback) { | |
| 98 socket_->AllowAddressReuse(callback); | |
| 99 } | |
| 100 | |
| 101 void UDPSocketWrapper::Bind( | |
| 102 NetAddressPtr addr, | |
| 103 const Callback<void(NetworkErrorPtr, NetAddressPtr)>& callback) { | |
| 104 socket_->Bind( | |
| 105 addr.Pass(), | |
| 106 BindOrConnectCallback(static_cast<BindOrConnectCallback::Runnable*>( | |
| 107 new ReceiverBindingCallback(this, callback)))); | |
| 108 } | |
| 109 | |
| 110 void UDPSocketWrapper::Connect( | |
| 111 NetAddressPtr remote_addr, | |
| 112 const Callback<void(NetworkErrorPtr, NetAddressPtr)>& callback) { | |
| 113 socket_->Connect( | |
| 114 remote_addr.Pass(), | |
| 115 BindOrConnectCallback(static_cast<BindOrConnectCallback::Runnable*>( | |
| 116 new ReceiverBindingCallback(this, callback)))); | |
| 117 } | |
| 118 | |
| 119 void UDPSocketWrapper::SetSendBufferSize(uint32_t size, | |
| 120 const ErrorCallback& callback) { | |
| 121 socket_->SetSendBufferSize(size, callback); | |
| 122 } | |
| 123 | |
| 124 void UDPSocketWrapper::SetReceiveBufferSize(uint32_t size, | |
| 125 const ErrorCallback& callback) { | |
| 126 socket_->SetReceiveBufferSize(size, callback); | |
| 127 } | |
| 128 | |
| 129 bool UDPSocketWrapper::ReceiveFrom(const ReceiveCallback& callback) { | |
| 130 if (receive_queue_.empty()) { | |
| 131 receive_requests_.push(callback); | |
| 132 return false; | |
| 133 } | |
| 134 | |
| 135 ReceivedData* data = receive_queue_.front(); | |
| 136 receive_queue_.pop(); | |
| 137 socket_->ReceiveMore(1); | |
| 138 callback.Run(data->result.Pass(), data->src_addr.Pass(), data->data.Pass()); | |
| 139 delete data; | |
| 140 return true; | |
| 141 } | |
| 142 | |
| 143 void UDPSocketWrapper::SendTo(NetAddressPtr dest_addr, | |
| 144 Array<uint8_t> data, | |
| 145 const ErrorCallback& callback) { | |
| 146 if (current_pending_sends_ >= max_pending_sends_) { | |
| 147 SendRequest* request = new SendRequest(); | |
| 148 request->dest_addr = dest_addr.Pass(); | |
| 149 request->data = data.Pass(); | |
| 150 request->callback = callback; | |
| 151 send_requests_.push(request); | |
| 152 return; | |
| 153 } | |
| 154 | |
| 155 MOJO_DCHECK(send_requests_.empty()); | |
| 156 current_pending_sends_++; | |
| 157 socket_->SendTo(dest_addr.Pass(), data.Pass(), | |
| 158 ErrorCallback(static_cast<ErrorCallback::Runnable*>( | |
| 159 new SendCallbackHandler(this, callback)))); | |
| 160 } | |
| 161 | |
| 162 void UDPSocketWrapper::OnReceived(NetworkErrorPtr result, | |
| 163 NetAddressPtr src_addr, | |
| 164 Array<uint8_t> data) { | |
| 165 if (!receive_requests_.empty()) { | |
| 166 // The cache should be empty if there are user requests waiting for data. | |
| 167 MOJO_DCHECK(receive_queue_.empty()); | |
| 168 | |
| 169 socket_->ReceiveMore(1); | |
| 170 | |
| 171 ReceiveCallback callback = receive_requests_.front(); | |
| 172 receive_requests_.pop(); | |
| 173 | |
| 174 callback.Run(result.Pass(), src_addr.Pass(), data.Pass()); | |
| 175 return; | |
| 176 } | |
| 177 | |
| 178 MOJO_DCHECK(receive_queue_.size() < max_receive_queue_size_); | |
| 179 ReceivedData* received_data = new ReceivedData(); | |
| 180 received_data->result = result.Pass(); | |
| 181 received_data->src_addr = src_addr.Pass(); | |
| 182 received_data->data = data.Pass(); | |
| 183 receive_queue_.push(received_data); | |
| 184 } | |
| 185 | |
| 186 void UDPSocketWrapper::Initialize(uint32_t requested_max_pending_sends) { | |
| 187 socket_->NegotiateMaxPendingSendRequests( | |
| 188 requested_max_pending_sends, | |
| 189 Callback<void(uint32_t)>( | |
| 190 static_cast< Callback<void(uint32_t)>::Runnable*>( | |
| 191 new NegotiateCallbackHandler(this)))); | |
| 192 } | |
| 193 | |
| 194 void UDPSocketWrapper::OnNegotiateMaxPendingSendRequestsCompleted( | |
| 195 uint32_t actual_size) { | |
| 196 MOJO_DCHECK(max_pending_sends_ == 1); | |
| 197 | |
| 198 if (actual_size == 0) { | |
| 199 assert(false); | |
| 200 return; | |
| 201 } | |
| 202 | |
| 203 max_pending_sends_ = actual_size; | |
| 204 | |
| 205 while (ProcessNextSendRequest()); | |
| 206 } | |
| 207 | |
| 208 void UDPSocketWrapper::OnSendToCompleted( | |
| 209 NetworkErrorPtr result, | |
| 210 const ErrorCallback& forward_callback) { | |
| 211 current_pending_sends_--; | |
| 212 ProcessNextSendRequest(); | |
| 213 | |
| 214 forward_callback.Run(result.Pass()); | |
| 215 } | |
| 216 | |
| 217 bool UDPSocketWrapper::ProcessNextSendRequest() { | |
| 218 if (current_pending_sends_ >= max_pending_sends_ || send_requests_.empty()) | |
| 219 return false; | |
| 220 | |
| 221 SendRequest* request = send_requests_.front(); | |
| 222 send_requests_.pop(); | |
| 223 | |
| 224 current_pending_sends_++; | |
| 225 | |
| 226 socket_->SendTo( | |
| 227 request->dest_addr.Pass(), request->data.Pass(), | |
| 228 ErrorCallback(static_cast<ErrorCallback::Runnable*>( | |
| 229 new SendCallbackHandler(this, request->callback)))); | |
| 230 | |
| 231 delete request; | |
| 232 | |
| 233 return true; | |
| 234 } | |
| 235 | |
| 236 void UDPSocketWrapper::StartReceivingData( | |
| 237 InterfaceRequest<UDPSocketReceiver> request) { | |
| 238 binding_.Bind(request.Pass()); | |
| 239 socket_->ReceiveMore(max_receive_queue_size_); | |
| 240 } | |
| 241 | |
| 242 } // namespace mojo | |
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