1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include "host/commands/virtual_usb_manager/vadb/usb_cmd.h" 19 20 namespace vadb { 21 // Request remote device attach (~open). 22 class USBCmdHeartbeat : public USBCommand { 23 public: 24 // Heartbeat result callback receives a boolean argument indicating whether 25 // remote device is ready to be attached. 26 using HeartbeatResultCB = std::function<void(bool)>; 27 28 USBCmdHeartbeat(HeartbeatResultCB callback); 29 ~USBCmdHeartbeat() override = default; 30 31 // Return usbforward command this instance is executing. Command()32 usb_forward::Command Command() override { return usb_forward::CmdHeartbeat; } 33 34 // Send request body to the server. 35 // Return false, if communication failed. 36 bool OnRequest(const cvd::SharedFD& data) override; 37 38 // Receive response data from the server. 39 // Return false, if communication failed. 40 bool OnResponse(bool is_success, const cvd::SharedFD& data) override; 41 42 private: 43 HeartbeatResultCB callback_; 44 45 USBCmdHeartbeat(const USBCmdHeartbeat& other) = delete; 46 USBCmdHeartbeat& operator=(const USBCmdHeartbeat& other) = delete; 47 }; 48 } // namespace vadb 49