tlsSocket.getSession() Returns the ASN.1 encoded TLS session or undefined if none was negotiated. Could be used to speed up handshake establishment when reconnecting to the server.

socket.localAddress The string representation of the local IP address the remote client is connecting on. For example, if you are listening on '0.0.0.0' and the client connects on '192.168.1.1', the value would be '192.168.1.1'.

Stability: 2 - Stable The child_process module provides the ability to spawn child processes in a manner that is similar, but not identical, to popen(3). This capability is primarily provided by the child_process.spawn() function: const spawn = require('child_process').spawn; const ls = spawn('ls', ['-lh', '/usr']); ls.stdout.on('data', (data) => { console.log(`stdout: ${data}`); }); ls.stderr.on('data', (data) => { console.log(`stderr: ${data}`); }); ls.on('close', (code) => {

fs.realpathSync(path[, cache]) Synchronous realpath(2). Returns the resolved path. cache is an object literal of mapped paths that can be used to force a specific path resolution or avoid additional fs.stat calls for known real paths.

buf.writeDoubleLE(value, offset[, noAssert]) value <Number> Bytes to be written to Buffer offset <Number> 0 <= offset <= buf.length - 8 noAssert <Boolean> Default: false Return: <Number> The offset plus the number of written bytes Writes value to the Buffer at the specified offset with specified endian format (writeDoubleBE() writes big endian, writeDoubleLE() writes little endian). The value argument should be a valid 64-bit double. Behavior is not defined w

Event: 'line' function (line) {} Emitted whenever the input stream receives an end of line (\n, \r, or \r\n), usually received when the user hits enter, or return. This is a good hook to listen for user input. Example of listening for 'line': rl.on('line', (cmd) => { console.log(`You just typed: ${cmd}`); });

fs.mkdirSync(path[, mode]) Synchronous mkdir(2). Returns undefined.

child.stdio <Array> A sparse array of pipes to the child process, corresponding with positions in the stdio option passed to child_process.spawn() that have been set to the value 'pipe'. Note that child.stdio[0], child.stdio[1], and child.stdio[2] are also available as child.stdin, child.stdout, and child.stderr, respectively. In the following example, only the child's fd 1 (stdout) is configured as a pipe, so only the parent's child.stdio[1] is a stream, all other values in the array

dns.resolveSrv(hostname, callback) Uses the DNS protocol to resolve service records (SRV records) for the hostname. The addresses argument passed to the callback function will be an array of objects with the following properties: priority weight port name { priority: 10, weight: 5, port: 21223, name: 'service.example.com' }

buf.writeIntBE(value, offset, byteLength[, noAssert])