60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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sdt-udp.h
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Copyright (c) 2020 Kevin Matz (kevin.matz@gmail.com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#pragma once
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#include <cstdint>
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// ACN EPI 18 - Operation of SDT on UDP Networks
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namespace ACN {
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namespace SDT {
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namespace UDP {
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// 3 Address Specification
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struct address_t {
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uint8_t type;
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uint16_t udp_port;
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union {
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uint8_t ipv4[4];
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uint8_t ipv6[16];
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};
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};
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// Table 3. SDT symbolic parameters
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static const float MAK_TIMEOUT_FACTOR = 0.1;
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static const uint8_t MAK_MAX_RETRIES = 2; // (3 tries total)
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static const uint8_t AD_HOC_TIMEOUT = 200; // ms
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static const uint8_t AD_HOC_RETRIES = 2; // (3 tries total)
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static const float RECIPROCAL_TIMEOUT_FACTOR = 0.2;
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static const uint8_t MIN_EXPIRY_TIME = 2; // s
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static const float NAK_TIMEOUT_FACTOR = 0.1;
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static const uint8_t NAK_MAX_RETRIES = 2; // (3 tries total)
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static const uint8_t NAK_HOLDOFF_INTERVAL = 2; // ms
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static const uint8_t NAK_MAX_TIME = 10 * NAK_HOLDOFF_INTERVAL;
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static const uint8_t NAK_BLANKTIME = 3 * NAK_HOLDOFF_INTERVAL;
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static const uint16_t SDT_MULTICAST_PORT = 5568; // IANA registered “sdt”
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} // UDP
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} // SDT
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} // ACN
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