Keepalive And Date

http.createServer response fidelity: every response is stamped with an RFC 7231 `Date` header, and HTTP/1.1 connections are persistent by default. A `curl -D - http://127.0.0.1:18641/` against this server shows:

HTTP/1.1 200 OK Date: Thu, 04 Sep 2026 23:19:21 GMT Content-Length: 2 Connection: keep-alive Keep-Alive: timeout=5

and `curl -v` two-URL run reports "Re-using existing connection" — the socket is reused for the second request. A client that sends `Connection: close` (or a handler that sets it) gets `Connection: close` and the socket closes after one exchange.

This example serves one in-process request to prove the server is up, then exits (a real server omits the self-request and the shutdown timer).

import http from 'http';

http.createServer((req: http.IncomingMessage, res: http.ServerResponse) => {
  res.end("ok");
}).listen(18641, () => {
  http.get("http://127.0.0.1:18641/", (res) => {
    let body = "";
    res.on('data', (chunk: string) => { body = body + chunk; });
    res.on('end', () => {
      console.log("status:", res.statusCode);
      console.log("body:", body);
      process.exit(0);
    });
  });
});

View source on GitHubexamples/http/keepalive_and_date.ts

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