sunmeat · May 5, 2025 08:19
diff --git a/different files b/different files
 http://sunmeat.atwebpages.com/js/sharp.html (client side):

 <!DOCTYPE html>
 <html lang="">
 <head>
  <meta charset="UTF-8">
  <title>Отправка числа на сервер</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background-color: #121212;
      color: #ffffff;
      padding: 2rem;
      margin: 0;
    }
    .container {
      max-width: 600px;
      margin: 0 auto;
      background-color: #1e1e1e;
      padding: 20px;
      border-radius: 10px;
    }
    input[type="text"] {
      padding: 8px;
      border-radius: 5px;
      border: none;
      background-color: #2a2a2a;
      color: #ffffff;
      width: 100%;
      box-sizing: border-box;
      margin-bottom: 10px;
    }
    button {
      padding: 0.5rem 1rem;
      margin: 5px;
      border-radius: 5px;
      border: none;
      background-color: #1db954;
      color: #ffffff;
      cursor: pointer;
      font-size: 16px;
    }
    button:hover {
      background-color: #1ed760;
    }
    button:disabled {
      background-color: #555;
      cursor: not-allowed;
    }
    .result-box {
      margin: 20px 0;
      padding: 10px;
      border: 1px solid #444;
      border-radius: 5px;
      text-align: left;
      max-height: 300px;
      overflow-y: auto;
    }
    .success {
      color: #00FF00;
    }
    .error {
      color: #FF5555;
    }
  </style>
 </head>
 <body>
 <div class="container">
  <h2>Отправка числа на сервер</h2>
  <input type="text" id="numberInput" placeholder="Введите число или 'exit'" value="5" />
  <button onclick="sendNumber()" id="sendButton">Отправить</button>
  <button onclick="stopSending()" id="stopButton" disabled>Остановить</button>
  <div id="result" class="result-box"></div>
 </div>

 <script>
  const serverUrl = 'https://netserver-dkf4.onrender.com/send';
  const resultDiv = document.querySelector('#result');
  const numberInput = document.querySelector('#numberInput');
  const sendButton = document.querySelector('#sendButton');
  const stopButton = document.querySelector('#stopButton');
  let isSending = false;

  async function sendNumber() {
    if (isSending) return; // Prevent multiple sends
    const input = numberInput.value.trim();
    if (!input) {
      appendResult('Пожалуйста, введите число или "exit".', 'error');
      return;
    }

    if (input.toLowerCase() === 'exit') {
      stopSending();
      return;
    }

    isSending = true;
    sendButton.disabled = true;
    stopButton.disabled = false;
    appendResult('Отправка...', 'success');

    try {
      const response = await fetch(serverUrl, {
        method: 'POST',
        headers: {
          'Content-Type': 'text/plain',
          'Accept': 'text/plain'
        },
        body: input
      });

      if (!response.ok) {
        const errorText = await response.text();
        throw new Error(`Ошибка ${response.status}: ${errorText}`);
      }

      const result = await response.text();
      document.title = `Сервер ответил: ${result}`;
      appendResult(`Сервер ответил: ${result}`, 'success');
    } catch (error) {
      appendResult(`Ошибка отправки: ${error.message}`, 'error');
    } finally {
      isSending = false;
      sendButton.disabled = false;
      numberInput.value = '';
      numberInput.focus();
    }
  }

  function stopSending() {
    isSending = false;
    sendButton.disabled = false;
    stopButton.disabled = true;
    appendResult('Отправка остановлена.', 'success');
    document.title = 'Отправка числа на сервер';
  }

  function appendResult(message, type) {
    const messageDiv = document.createElement('div');
    messageDiv.className = type;
    messageDiv.textContent = message;
    resultDiv.appendChild(messageDiv);
    resultDiv.scrollTop = resultDiv.scrollHeight;
  }

  numberInput.addEventListener('keypress', (e) => {
    if (e.key === 'Enter') {
      sendNumber();
    }
  });
 </script>
 </body>
 </html>

 =====================================================================================================

 https://github.com/sunmeat/NetServer/blob/master/Program.cs (server side):

 using System;
 using System.Net;
 using System.Text;
 using System.IO;
 using System.Threading.Tasks;

 class Program
 {
    static async Task Main()
    {
        string port = Environment.GetEnvironmentVariable("PORT") ?? "5000";
        string url = $"http://+:{port}/send/";
        
        HttpListener listener = new HttpListener();
        listener.Prefixes.Add(url);
        listener.Start();
        Console.WriteLine($"Сервер запущен на {url}");

        while (true)
        {
            var context = await listener.GetContextAsync();
            _ = Task.Run(() => ProcessRequest(context));
        }
    }

    static async Task ProcessRequest(HttpListenerContext context)
    {
        HttpListenerRequest request = context.Request;
        HttpListenerResponse response = context.Response;

        // add CORS headers to all responses (for JavaScript example)
        response.AddHeader("Access-Control-Allow-Origin", "*");
        response.AddHeader("Access-Control-Allow-Methods", "POST, OPTIONS");
        response.AddHeader("Access-Control-Allow-Headers", "Content-Type");

        // handle preflight OPTIONS request (for JavaScript example)
        if (request.HttpMethod == "OPTIONS")
        {
            response.StatusCode = 200;
            response.Close();
            return;
        }

        if (request.HttpMethod != "POST")
        {
            response.StatusCode = 405;
            await response.OutputStream.WriteAsync(Encoding.UTF8.GetBytes("Только POST-запросы"));
            response.Close();
            return;
        }

        using var reader = new StreamReader(request.InputStream, Encoding.UTF8);
        string numberStr = await reader.ReadToEndAsync();

        if (int.TryParse(numberStr, out int number))
        {
            int result = number + 1;
            byte[] buffer = Encoding.UTF8.GetBytes(result.ToString());

            response.ContentType = "text/plain";
            response.ContentLength64 = buffer.Length;
            await response.OutputStream.WriteAsync(buffer, 0, buffer.Length);
            Console.WriteLine($"Получено: {number}, отправлено: {result}");
        }
        else
        {
            response.StatusCode = 400;
            await response.OutputStream.WriteAsync(Encoding.UTF8.GetBytes("Ошибка: ожидалось число."));
        }

        response.Close();
    }
 }
	http://sunmeat.atwebpages.com/js/sharp.html (client side):

	<!DOCTYPE html>
	<html lang="">
	<head>
	<meta charset="UTF-8">
	<title>Отправка числа на сервер</title>
	<style>
	body {
	font-family: Arial, sans-serif;
	background-color: #121212;
	color: #ffffff;
	padding: 2rem;
	margin: 0;
	}
	.container {
	max-width: 600px;
	margin: 0 auto;
	background-color: #1e1e1e;
	padding: 20px;
	border-radius: 10px;
	}
	input[type="text"] {
	padding: 8px;
	border-radius: 5px;
	border: none;
	background-color: #2a2a2a;
	color: #ffffff;
	width: 100%;
	box-sizing: border-box;
	margin-bottom: 10px;
	}
	button {
	padding: 0.5rem 1rem;
	margin: 5px;
	border-radius: 5px;
	border: none;
	background-color: #1db954;
	color: #ffffff;
	cursor: pointer;
	font-size: 16px;
	}
	button:hover {
	background-color: #1ed760;
	}
	button:disabled {
	background-color: #555;
	cursor: not-allowed;
	}
	.result-box {
	margin: 20px 0;
	padding: 10px;
	border: 1px solid #444;
	border-radius: 5px;
	text-align: left;
	max-height: 300px;
	overflow-y: auto;
	}
	.success {
	color: #00FF00;
	}
	.error {
	color: #FF5555;
	}
	</style>
	</head>
	<body>
	<div class="container">
	<h2>Отправка числа на сервер</h2>
	<input type="text" id="numberInput" placeholder="Введите число или 'exit'" value="5" />
	<button onclick="sendNumber()" id="sendButton">Отправить</button>
	<button onclick="stopSending()" id="stopButton" disabled>Остановить</button>
	<div id="result" class="result-box"></div>
	</div>

	<script>
	const serverUrl = 'https://netserver-dkf4.onrender.com/send';
	const resultDiv = document.querySelector('#result');
	const numberInput = document.querySelector('#numberInput');
	const sendButton = document.querySelector('#sendButton');
	const stopButton = document.querySelector('#stopButton');
	let isSending = false;

	async function sendNumber() {
	if (isSending) return; // Prevent multiple sends
	const input = numberInput.value.trim();
	if (!input) {
	appendResult('Пожалуйста, введите число или "exit".', 'error');
	return;
	}

	if (input.toLowerCase() === 'exit') {
	stopSending();
	return;
	}

	isSending = true;
	sendButton.disabled = true;
	stopButton.disabled = false;
	appendResult('Отправка...', 'success');

	try {
	const response = await fetch(serverUrl, {
	method: 'POST',
	headers: {
	'Content-Type': 'text/plain',
	'Accept': 'text/plain'
	},
	body: input
	});

	if (!response.ok) {
	const errorText = await response.text();
	throw new Error(`Ошибка ${response.status}: ${errorText}`);
	}

	const result = await response.text();
	document.title = `Сервер ответил: ${result}`;
	appendResult(`Сервер ответил: ${result}`, 'success');
	} catch (error) {
	appendResult(`Ошибка отправки: ${error.message}`, 'error');
	} finally {
	isSending = false;
	sendButton.disabled = false;
	numberInput.value = '';
	numberInput.focus();
	}
	}

	function stopSending() {
	isSending = false;
	sendButton.disabled = false;
	stopButton.disabled = true;
	appendResult('Отправка остановлена.', 'success');
	document.title = 'Отправка числа на сервер';
	}

	function appendResult(message, type) {
	const messageDiv = document.createElement('div');
	messageDiv.className = type;
	messageDiv.textContent = message;
	resultDiv.appendChild(messageDiv);
	resultDiv.scrollTop = resultDiv.scrollHeight;
	}

	numberInput.addEventListener('keypress', (e) => {
	if (e.key === 'Enter') {
	sendNumber();
	}
	});
	</script>
	</body>
	</html>

	=====================================================================================================

	https://github.com/sunmeat/NetServer/blob/master/Program.cs (server side):

	using System;
	using System.Net;
	using System.Text;
	using System.IO;
	using System.Threading.Tasks;

	class Program
	{
	static async Task Main()
	{
	string port = Environment.GetEnvironmentVariable("PORT") ?? "5000";
	string url = $"http://+:{port}/send/";

	HttpListener listener = new HttpListener();
	listener.Prefixes.Add(url);
	listener.Start();
	Console.WriteLine($"Сервер запущен на {url}");

	while (true)
	{
	var context = await listener.GetContextAsync();
	_ = Task.Run(() => ProcessRequest(context));
	}
	}

	static async Task ProcessRequest(HttpListenerContext context)
	{
	HttpListenerRequest request = context.Request;
	HttpListenerResponse response = context.Response;

	// add CORS headers to all responses (for JavaScript example)
	response.AddHeader("Access-Control-Allow-Origin", "*");
	response.AddHeader("Access-Control-Allow-Methods", "POST, OPTIONS");
	response.AddHeader("Access-Control-Allow-Headers", "Content-Type");

	// handle preflight OPTIONS request (for JavaScript example)
	if (request.HttpMethod == "OPTIONS")
	{
	response.StatusCode = 200;
	response.Close();
	return;
	}

	if (request.HttpMethod != "POST")
	{
	response.StatusCode = 405;
	await response.OutputStream.WriteAsync(Encoding.UTF8.GetBytes("Только POST-запросы"));
	response.Close();
	return;
	}

	using var reader = new StreamReader(request.InputStream, Encoding.UTF8);
	string numberStr = await reader.ReadToEndAsync();

	if (int.TryParse(numberStr, out int number))
	{
	int result = number + 1;
	byte[] buffer = Encoding.UTF8.GetBytes(result.ToString());

	response.ContentType = "text/plain";
	response.ContentLength64 = buffer.Length;
	await response.OutputStream.WriteAsync(buffer, 0, buffer.Length);
	Console.WriteLine($"Получено: {number}, отправлено: {result}");
	}
	else
	{
	response.StatusCode = 400;
	await response.OutputStream.WriteAsync(Encoding.UTF8.GetBytes("Ошибка: ожидалось число."));
	}

	response.Close();
	}
	}