ssh-tunneling
Version:
a ssh-tunneling client for nodejs
57 lines (56 loc) • 1.94 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.padLeft = exports.padRight = exports.getAvailablePort = exports.checkPortAvailable = void 0;
const net_1 = __importDefault(require("net"));
const checkPortAvailable = (port, host) => {
return new Promise((resolve) => {
const server = net_1.default.createServer()
.listen(port, host)
.on('listening', () => {
resolve(true);
server.close();
})
.on('error', (err) => {
if ((err === null || err === void 0 ? void 0 : err.code) === 'EADDRINUSE') {
resolve(false);
}
});
});
};
exports.checkPortAvailable = checkPortAvailable;
/**
* @description check whether port is idle and then return another idle port if the port pass in is unavailable
*/
const getAvailablePort = async (port) => {
if (port > 65535) {
throw new Error('There is no available port');
}
// check the *
let isAvailable = await (0, exports.checkPortAvailable)(port);
if (isAvailable) {
// check the localhost
isAvailable = await (0, exports.checkPortAvailable)(port, '127.0.0.1');
}
if (!isAvailable) {
return (0, exports.getAvailablePort)(port + 1);
}
return port;
};
exports.getAvailablePort = getAvailablePort;
function padRight(str, length, padStr) {
if (isNaN(str.length) || length - str.length < 0) {
return str;
}
return `${str}${(padStr || ' ').repeat(length - str.length)}`;
}
exports.padRight = padRight;
function padLeft(str, length, padStr) {
if (isNaN(str.length) || length - str.length < 0) {
return str;
}
return `${(padStr || ' ').repeat(length - str.length)}${str}`;
}
exports.padLeft = padLeft;