1 // Copyright 2020 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef CORE_INTERNAL_MEDIUMS_BLE_V2_BLE_PACKET_H_ 16 #define CORE_INTERNAL_MEDIUMS_BLE_V2_BLE_PACKET_H_ 17 18 #include <limits> 19 20 #include "platform/base/byte_array.h" 21 22 namespace location { 23 namespace nearby { 24 namespace connections { 25 namespace mediums { 26 27 // Represents the format of data sent over Ble sockets. 28 // 29 // [SERVICE_ID_HASH][DATA] 30 // 31 // See go/nearby-ble-design for more information. 32 class BlePacket { 33 public: 34 static const std::uint32_t kServiceIdHashLength = 3; 35 36 BlePacket() = default; 37 BlePacket(const ByteArray& service_id_hash, const ByteArray& data); 38 explicit BlePacket(const ByteArray& ble_packet_byte); 39 BlePacket(const BlePacket&) = default; 40 BlePacket& operator=(const BlePacket&) = default; 41 BlePacket(BlePacket&&) = default; 42 BlePacket& operator=(BlePacket&&) = default; 43 ~BlePacket() = default; 44 45 explicit operator ByteArray() const; 46 IsValid()47 bool IsValid() const { return !service_id_hash_.Empty(); } GetServiceIdHash()48 ByteArray GetServiceIdHash() const { return service_id_hash_; } GetData()49 ByteArray GetData() const { return data_; } 50 51 private: 52 static const std::uint32_t kMaxDataSize = 53 std::numeric_limits<int32_t>::max() - kServiceIdHashLength; 54 55 ByteArray service_id_hash_; 56 ByteArray data_; 57 }; 58 59 } // namespace mediums 60 } // namespace connections 61 } // namespace nearby 62 } // namespace location 63 64 #endif // CORE_INTERNAL_MEDIUMS_BLE_V2_BLE_PACKET_H_ 65