#!/usr/bin/env fun /* * This file is part of the Fun programming language. * https://fun-lang.xyz/ * * Copyright 2026 Johannes Findeisen * Licensed under the terms of the Apache-2.0 license. * https://opensource.org/license/apache-2-0 * * Added: 2026-03-26 */ #include #include // Simple multi-threaded HTTP server (thread-per-connection) // // Features: // - Blocking accept() in the main thread // - Each client is handled by a separate Fun thread // - Sends a minimal HTTP 200 response with a small HTML body // // Usage: // ./examples/net/http_mt_server.fun // Open http://127.0.0.1:8089/ in the browser PORT = 8080 BACKLOG = 128 srv = TcpServer(PORT, BACKLOG) if (srv.listen() <= 0) print("HTTP MT server: listen failed on :" + to_string(PORT)) return 0 print("HTTP MT server on :" + to_string(PORT)) fun handle_client(fd) req = sock_recv(fd, 8192) if (len(req) == 0) sock_close(fd) return 0 body = "

Hello from Fun multi-threaded server

" b = to_string(body) resp = "HTTP/1.1 200 OK\r\n" resp = resp + "Content-Type: text/html; charset=utf-8\r\n" resp = resp + "Content-Length: " + to_string(len(b)) + "\r\n" resp = resp + "Connection: close\r\n\r\n" + b sock_send(fd, resp) sock_close(fd) return 1 th = Thread() // Accept loop: spawn a thread per client while true fd = srv.accept() if (fd > 0) _ = th.spawn(handle_client, fd) /* Expected output (on start): HTTP MT server on :8080 Then open http://127.0.0.1:8089/ in a browser; it will render:

Hello from Fun multi-threaded server