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syntax = "proto3";
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package protocol;
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option optimize_for = SPEED;
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option go_package = "go.miragespace.co/specter/spec/protocol";
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import "spec/proto/node.proto";
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message Stream {
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    enum Type {
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        UNKNOWN_TYPE = 0;
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        RPC = 1; // used for rpc between nodes and between client/server
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        DIRECT = 2; // used for establishing the reverse proxy from the tunneling node to client
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        PROXY = 3; // used when client is not directly connected to the tunneling node
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        INTERNAL = 4; // used for /_internal endpoint proxying between nodes
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    }
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    Type type = 1;
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    Node target = 2;
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}
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message Datagram {
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    enum Type {
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        UNKNOWN = 0;
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        ALIVE = 1;
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        DATA = 2;
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        RTT_SYN = 3;
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        RTT_ACK = 4;
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    }
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    Type type = 1;
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    bytes data = 2;
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}
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message Connection {
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    enum State {
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        UNKNOWN_STATE = 0;
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        CACHED = 1;
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        FRESH = 2;
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    }
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    enum Direction {
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        UNKNOWN_DIRECTION = 0;
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        INCOMING = 1;
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        OUTGOING = 2;
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    }
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    Node identity = 1;
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    State cache_state = 2;
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    Direction cache_direction = 3;
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    string version = 5;
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}