elm327/dist/wifi-connection.js

Node.js/TypeScript library for ELM327 OBD2 adapters over USB, Bluetooth and WiFi

"use strict";
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    var desc = Object.getOwnPropertyDescriptor(m, k);
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}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
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        __setModuleDefault(result, mod);
        return result;
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})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.WifiConnection = void 0;
const net = __importStar(require("node:net"));
const connection_1 = require("./connection");
const errors_1 = require("./errors");
/**
 * WiFi (TCP/IP) connection to an ELM327 adapter.
 * WiFi adapters connect over TCP, typically at 192.168.0.10:35000.
 *
 * Updated to use ResponseMatcher for better request/response matching.
 */
class WifiConnection extends connection_1.OBD2Connection {
    client = null;
    host;
    port;
    lineEnding;
    buffer = '';
    constructor(config) {
        super(config);
        this.host = config.host || '192.168.0.10';
        this.port = config.port
            ? typeof config.port === 'string'
                ? parseInt(config.port, 10)
                : config.port
            : 35000;
        this.lineEnding = config.lineEnding || '\r';
    }
    async connect() {
        return new Promise((resolve, reject) => {
            this.client = new net.Socket();
            this.client.setTimeout(this.timeout);
            let settled = false;
            this.client.connect(this.port, this.host, () => {
                settled = true;
                this.isConnected = true;
                // Disable the default timeout after successful connect
                this.client.setTimeout(0);
                this.emit('connected');
                resolve();
            });
            this.client.on('data', (data) => {
                this.buffer += data.toString();
                let idx;
                while ((idx = this.buffer.indexOf('>')) !== -1) {
                    // Include the '>' prompt in the data passed to handleIncomingData
                    const raw = this.buffer.slice(0, idx + 1);
                    this.buffer = this.buffer.slice(idx + 1);
                    if (raw.trim().length > 0) {
                        // Send to ResponseMatcher for request matching (with '>' included)
                        this.handleIncomingData(raw);
                        // Also emit raw data event (without '>' for compatibility)
                        this.emit('data', raw.replace('>', '').trim());
                    }
                }
            });
            this.client.on('error', (err) => {
                const error = new errors_1.ConnectionError(`WiFi error: ${err.message}`);
                this.rejectAllPending(error);
                this.emit('error', err);
                if (!settled) {
                    settled = true;
                    reject(new errors_1.ConnectionError(`Failed to connect: ${err.message}`));
                }
            });
            this.client.on('timeout', () => {
                const err = new errors_1.ConnectionError('Connection timeout');
                this.rejectAllPending(err);
                this.client?.destroy();
                this.emit('error', err);
            });
            this.client.on('close', () => {
                this.isConnected = false;
                this.rejectAllPending(new errors_1.ConnectionError('Connection closed'));
                this.emit('disconnected');
            });
        });
    }
    async sendRaw(data) {
        if (!this.isConnected || !this.client) {
            throw new errors_1.ConnectionError('Not connected to WiFi adapter');
        }
        return new Promise((resolve, reject) => {
            this.client.write(`${data}${this.lineEnding}`, (err) => {
                if (err) {
                    reject(new errors_1.ConnectionError(`Failed to send data: ${err.message}`));
                }
                else {
                    resolve();
                }
            });
        });
    }
    async disconnect() {
        this.rejectAllPending(new errors_1.ConnectionError('Disconnected manually'));
        if (this.client) {
            this.client.destroy();
            this.client = null;
        }
        this.isConnected = false;
        this.emit('disconnected');
    }
    isConnectionOpen() {
        return this.isConnected && this.client !== null && !this.client.destroyed;
    }
    clearBuffer() {
        this.buffer = '';
    }
}
exports.WifiConnection = WifiConnection;
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