Last active
April 9, 2024 08:38
-
-
Save define-private-public/d05bc52dd0bed1c4699d49e2737e80e7 to your computer and use it in GitHub Desktop.
A Simple HTTP server in C#
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// Filename: HttpServer.cs | |
// Author: Benjamin N. Summerton <define-private-public> | |
// License: Unlicense (http://unlicense.org/) | |
using System; | |
using System.IO; | |
using System.Text; | |
using System.Net; | |
using System.Threading.Tasks; | |
namespace HttpListenerExample | |
{ | |
class HttpServer | |
{ | |
public static HttpListener listener; | |
public static string url = "http://localhost:8000/"; | |
public static int pageViews = 0; | |
public static int requestCount = 0; | |
public static string pageData = | |
"<!DOCTYPE>" + | |
"<html>" + | |
" <head>" + | |
" <title>HttpListener Example</title>" + | |
" </head>" + | |
" <body>" + | |
" <p>Page Views: {0}</p>" + | |
" <form method=\"post\" action=\"shutdown\">" + | |
" <input type=\"submit\" value=\"Shutdown\" {1}>" + | |
" </form>" + | |
" </body>" + | |
"</html>"; | |
public static async Task HandleIncomingConnections() | |
{ | |
bool runServer = true; | |
// While a user hasn't visited the `shutdown` url, keep on handling requests | |
while (runServer) | |
{ | |
// Will wait here until we hear from a connection | |
HttpListenerContext ctx = await listener.GetContextAsync(); | |
// Peel out the requests and response objects | |
HttpListenerRequest req = ctx.Request; | |
HttpListenerResponse resp = ctx.Response; | |
// Print out some info about the request | |
Console.WriteLine("Request #: {0}", ++requestCount); | |
Console.WriteLine(req.Url.ToString()); | |
Console.WriteLine(req.HttpMethod); | |
Console.WriteLine(req.UserHostName); | |
Console.WriteLine(req.UserAgent); | |
Console.WriteLine(); | |
// If `shutdown` url requested w/ POST, then shutdown the server after serving the page | |
if ((req.HttpMethod == "POST") && (req.Url.AbsolutePath == "/shutdown")) | |
{ | |
Console.WriteLine("Shutdown requested"); | |
runServer = false; | |
} | |
// Make sure we don't increment the page views counter if `favicon.ico` is requested | |
if (req.Url.AbsolutePath != "/favicon.ico") | |
pageViews += 1; | |
// Write the response info | |
string disableSubmit = !runServer ? "disabled" : ""; | |
byte[] data = Encoding.UTF8.GetBytes(String.Format(pageData, pageViews, disableSubmit)); | |
resp.ContentType = "text/html"; | |
resp.ContentEncoding = Encoding.UTF8; | |
resp.ContentLength64 = data.LongLength; | |
// Write out to the response stream (asynchronously), then close it | |
await resp.OutputStream.WriteAsync(data, 0, data.Length); | |
resp.Close(); | |
} | |
} | |
public static void Main(string[] args) | |
{ | |
// Create a Http server and start listening for incoming connections | |
listener = new HttpListener(); | |
listener.Prefixes.Add(url); | |
listener.Start(); | |
Console.WriteLine("Listening for connections on {0}", url); | |
// Handle requests | |
Task listenTask = HandleIncomingConnections(); | |
listenTask.GetAwaiter().GetResult(); | |
// Close the listener | |
listener.Close(); | |
} | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Been fooling around with this and noticed some unanswered questions above. Can only tell you what worked for me.
I went with something like:
string payload = GetRequestPostData(ctx.Request);
Where you define that function like:
change localhost to something like + or *
e.g.
string url = $"http://+:8000/";
Your OS might complain about permissions though.
If so you can try something like: "netsh http add urlacl url=http://+:8000/ user=your_username_here"