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Nodeクックブック
book

Nodeクックブック

by David Mark Clements, 和田 祐一郎
February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
O'Reilly Japan, Inc.
Content preview from Nodeクックブック
279
レシピ 8.3 TCP 通信を行う
forwarder.js
var net = require('net');
var fromPort = process.argv[2] || 9000;
var toPort = process.argv[3] || 22;
デフォルトでは
9000
番ポートで受信したデータを
22
番(
SSH
)ポートに転送するよう定義さ
れていますが、コマンド実行時に引数を指定することで、受信・転送ポート番号を設定することも
できます。
次に、
fromPort
で指定されたポートで待機する
TCP
サーバを設定します。この
TCP
サーバに
クライアントが接続すると自らがクライアントとなり
toPort
に接続し、クライアントから受け
取ったデータをすべて
toPort
に転送します。
forwarder.js
net.createServer(function (socket) {
var client;
socket.on('connect', function () {
client = net.connect(toPort);
client.on('data', function (data) {
socket.write(data);
});
}).on('data', function (data) {
client.write(data);
}).on('end', function (data) {
client.end();
});
}).listen(fromPort, function ...
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Publisher Resources

ISBN: 9784873116068Other