1 /* 2 * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 #ifndef NET_DCSCTP_COMMON_INTERNAL_TYPES_H_ 11 #define NET_DCSCTP_COMMON_INTERNAL_TYPES_H_ 12 13 #include <functional> 14 #include <utility> 15 16 #include "net/dcsctp/public/types.h" 17 #include "rtc_base/strong_alias.h" 18 19 namespace dcsctp { 20 21 // Stream Sequence Number (SSN) 22 using SSN = webrtc::StrongAlias<class SSNTag, uint16_t>; 23 24 // Message Identifier (MID) 25 using MID = webrtc::StrongAlias<class MIDTag, uint32_t>; 26 27 // Fragment Sequence Number (FSN) 28 using FSN = webrtc::StrongAlias<class FSNTag, uint32_t>; 29 30 // Transmission Sequence Number (TSN) 31 using TSN = webrtc::StrongAlias<class TSNTag, uint32_t>; 32 33 // Reconfiguration Request Sequence Number 34 using ReconfigRequestSN = 35 webrtc::StrongAlias<class ReconfigRequestSNTag, uint32_t>; 36 37 // Verification Tag, used for packet validation. 38 using VerificationTag = webrtc::StrongAlias<class VerificationTagTag, uint32_t>; 39 40 // Tie Tag, used as a nonce when connecting. 41 using TieTag = webrtc::StrongAlias<class TieTagTag, uint64_t>; 42 43 } // namespace dcsctp 44 #endif // NET_DCSCTP_COMMON_INTERNAL_TYPES_H_ 45