79 lines
1.6 KiB
TypeScript
79 lines
1.6 KiB
TypeScript
import { BufReader } from "https://deno.land/std@0.157.0/io/buffer.ts";
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const PORT = 5588;
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type Road = number;
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type Dispatcher = Road[];
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type Location = number;
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type SpeedLimit = number;
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type Timestamp = number;
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type Plate = string;
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type Car = Plate;
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type U8 = number;
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type U16 = number;
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type U32 = number;
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interface Camera {
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road: Road;
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location: Location;
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speedLimit: SpeedLimit;
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}
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interface Report {
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camera: Camera;
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car: Car;
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timestamp: Timestamp;
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}
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// const tEnc = new TextEncoder();
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console.log(`Starting TCP listener on on 0.0.0.0:${PORT}`);
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function chatSession(conn: Deno.Conn) {
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const closeOnDisconnect = () => {
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console.warn("Disconnected client");
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try {
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conn.close();
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} catch (err) {
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console.error("Error closing client connection:", err);
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}
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};
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serve(conn).catch((e) => e).finally(closeOnDisconnect);
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}
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enum MessageType {
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ERROR = 0x10, // Server -> Client
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PLATE = 0x20, // Client -> Server
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TICKET = 0x21, // Server -> Client
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}
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type ErrorMessage = [
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string, // msg
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];
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type PlateMessage = [
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string, // plate
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U32, // timestamp
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];
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interface TicketMessage {
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}
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type Message = ErrorMessage | PlateMessage;
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async function serve(conn: Deno.Conn) {
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const reader = new BufReader(conn);
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const type = await reader.peek(1);
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if (!type) throw new Error("failed to peek start of packet");
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console.log({ type }, 0x64);
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// TODO: loop...
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}
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for await (const conn of Deno.listen({ port: PORT })) {
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console.log("Connection established:", conn.remoteAddr);
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chatSession(conn);
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console.log("Connection closed:", conn.remoteAddr);
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}
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