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groupChatClient.js
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groupChatClient.js
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/*
* TCP Client to interact with groupChatServer.js
*
* Usage: node groupChatClient.js [username]
*/
/* group server address, change this as in groupChatServer.js SERVER_HOST */
const SERVER_HOST = "127.0.0.1";
/* group server port number, change this as in groupChatServer.js SERVER_PORT */
const SERVER_PORT = 8765;
/* Prompt on the client side where you type the message */
const PROMT = "me>"
/*
* your name, message will be sent with this name, this will changed to
* username from the command line if given
*/
var userName = "unknown"
var stdin = process.openStdin();
const net = require('net');
if (process.argv[2])
userName = process.argv[2];
const socket = net.createConnection(SERVER_PORT, SERVER_HOST, function() {
socket.on('data', function(message) {
process.stdout.write("\n" + message);
process.stdout.write(PROMT);
});
process.stdout.write(PROMT);
stdin.addListener('data', function(message) {
socket.write(userName + ">" + message);
process.stdout.write(PROMT);
});
});
socket.on('error', function(err) {
if (err.code === 'ECONNREFUSED')
console.log("Error:connection refused, please check the server is running");
else
console.log("\nsocket error:", err.code);
});
socket.on('close', function(err) {
if (err) {
console.log('\nclient closed due to error');
} else {
console.log('\nserver closes the client connection');
}
process.exit(err ? 1 : 0);
});