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43 lines
1.7 KiB
C++
43 lines
1.7 KiB
C++
#pragma once
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#include <chrono>
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#include <cstddef>
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#include <llarp/util/types.hpp>
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#include <llarp/util/time.hpp>
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namespace llarp::path
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{
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/// maximum path length
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constexpr std::size_t MAX_LEN = 8;
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/// default path length
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constexpr std::size_t DEFAULT_LEN = 4;
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/// pad messages to the nearest this many bytes
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constexpr std::size_t PAD_SIZE = 128;
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/// default path lifetime in ms
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constexpr std::chrono::milliseconds DEFAULT_LIFETIME = 20min;
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/// minimum intro lifetime we will advertise
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constexpr std::chrono::milliseconds MIN_INTRO_LIFETIME = DEFAULT_LIFETIME / 2;
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/// number of slices of path lifetime to spread intros out via
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constexpr auto INTRO_SPREAD_SLICES = 4;
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/// spacing frequency at which we try to build paths for introductions
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constexpr std::chrono::milliseconds INTRO_PATH_SPREAD = DEFAULT_LIFETIME / INTRO_SPREAD_SLICES;
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/// how long away from expiration in millseconds do we consider an intro to become stale
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constexpr std::chrono::milliseconds INTRO_STALE_THRESHOLD = DEFAULT_LIFETIME - INTRO_PATH_SPREAD;
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/// Minimum paths to keep around for intros; mainly used at startup (the
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/// spread, above, should be able to maintain more than this number of paths
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/// normally once things are going).
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constexpr std::size_t MIN_INTRO_PATHS = 4;
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/// after this many ms a path build times out
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constexpr auto BUILD_TIMEOUT = 10s;
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/// measure latency every this interval ms
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constexpr auto LATENCY_INTERVAL = 20s;
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/// if a path is inactive for this amount of time it's dead
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constexpr auto ALIVE_TIMEOUT = LATENCY_INTERVAL * 1.5;
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/// how big transit hop traffic queues are
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constexpr std::size_t TRANSIT_HOP_QUEUE_SIZE = 256;
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} // namespace llarp::path
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