1 /* 2 * Copyright (C) 2019 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 17 #pragma once 18 19 #include <webrtc/DTLS.h> 20 21 #include <https/RunLoop.h> 22 23 #include <memory> 24 25 struct SCTPHandler : public std::enable_shared_from_this<SCTPHandler> { 26 explicit SCTPHandler( 27 std::shared_ptr<RunLoop> runLoop, 28 std::shared_ptr<DTLS> dtls); 29 30 void run(); 31 32 int inject(uint8_t *data, size_t size); 33 34 private: 35 std::shared_ptr<RunLoop> mRunLoop; 36 std::shared_ptr<DTLS> mDTLS; 37 38 uint32_t mInitiateTag; 39 uint32_t mSendingTSN; 40 bool mSentGreeting; 41 42 int processChunk( 43 uint16_t srcPort, 44 const uint8_t *data, 45 size_t size, 46 bool firstChunk, 47 bool lastChunk); 48 49 static uint32_t crc32c(const uint8_t *data, size_t size); 50 51 void onSendGreeting(uint16_t srcPort, size_t index); 52 }; 53