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Siomek101
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Program.cs
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343
Program.cs
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using System.IO.Compression;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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namespace myownhttp
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{
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internal class Program
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{
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public enum HTTPMeth
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{
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undefined = -1,
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GET = 0,
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POST = 1 // add more in future
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}
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public class HTTPReq
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{
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public bool valid = false;
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public string Path = "";
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public string HTTPVersion = "";
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public string Content = "";
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public HTTPMeth Method = HTTPMeth.undefined;
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public Dictionary<string,string> Headers = new Dictionary<string,string>();
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public HTTPReq(string request)
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{
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try
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{
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var split = request.ReplaceLineEndings().Split(Environment.NewLine);
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var splitfirst = split[0].Split(" ");
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if (splitfirst[0] == "GET") Method = HTTPMeth.GET;
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else if (splitfirst[0] == "POST") Method = HTTPMeth.POST;
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Path = splitfirst[1]; // check if the path
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HTTPVersion = splitfirst[2];
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// headers
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for (int i = 1; i < split.Length; i++)
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{
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var e = split[i];
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if(e == "")
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{
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if(i+1 < split.Length)
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{
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var arraycontent = split.Skip(i);
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foreach(var item in arraycontent)
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{
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Content += item + "\r\n";
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}
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}
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break;
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}
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var esplit = e.Split(": ");
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Headers.Add(esplit[0], esplit[1]);
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}
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valid = true;
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}
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catch (Exception e)
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{
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valid = false;
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}
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}
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public override string ToString()
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{
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return $"HTTP REQUEST -> {(valid ? "Valid" : "Invalid")}, {(Method switch { HTTPMeth.undefined => "Unset/Undefined", HTTPMeth.GET => "GET", HTTPMeth.POST => "POST", _ => "MError"})} {Path} {HTTPVersion}";
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}
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}
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public class HTTPRes
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{
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byte[] contentBytes = [];
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public byte[] GetBytes() { return contentBytes; }
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public HTTPRes SetBytes(byte[] bytes) { contentBytes = bytes; return this; }
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public HTTPRes SetBytes(string str) { contentBytes = Encoding.UTF8.GetBytes(str); return this; }
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public string ContentType = GetMimeType("txt");
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string Status = GetStatusFromNum(200);
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public string GetStatus() { return Status; }
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public HTTPRes SetStatus(int num) { SetStatus(GetStatusFromNum(num)); return this; }
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public HTTPRes SetStatus(string status) { Status = status; return this; }
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public byte[] Build()
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{
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return Encoding.UTF8.GetBytes(
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$"HTTP/1.1 {Status}\r\n" +
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$"Content-Type: {ContentType}{(ContentType.Contains("text") ? "; charset=utf-8" : "")}\n" +
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$"Content-Length: {contentBytes.Length}" +
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$"\n" +
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$"\n"
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).Concat(contentBytes).ToArray();
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}
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}
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public abstract class HTTPHandler
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{
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public HTTPHandler() { }
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public virtual void Handle(HTTPReq request, HTTPRes response, Action next)
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{
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// this is just a base, do nothing
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next();
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}
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}
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public class HTTPGetHandler : HTTPHandler
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{
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string Path = "";
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Action<HTTPReq, HTTPRes, Action> Action = (HTTPReq req, HTTPRes res, Action next) => { };
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public HTTPGetHandler(string path, Action<HTTPReq, HTTPRes, Action> action) { Path = path; Action = action; }
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public override void Handle(HTTPReq request, HTTPRes response, Action next)
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{
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if (request.Path == Path) Action(request, response, next);
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else next();
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}
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}
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public class HTTPServeFileHandler : HTTPHandler
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{
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HTTPGetHandler replacement;
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public HTTPServeFileHandler(string path, string filepath, string MimeType)
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{
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replacement = new(path, (req, res, next) =>
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{
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if (File.Exists(filepath))
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{
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res.SetBytes(File.ReadAllBytes(filepath)).SetStatus(200).ContentType = MimeType;
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}
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else next();
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});
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}
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public override void Handle(HTTPReq request, HTTPRes response, Action next)
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{
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replacement.Handle(request, response, next);
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}
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}
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public class HTTPStaticFilesHandler : HTTPHandler
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{
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string Files = "";
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public HTTPStaticFilesHandler(string pathWithStatic) { Files = pathWithStatic; }
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public override void Handle(HTTPReq request, HTTPRes response, Action next)
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{
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var pat = request.Path.Replace("..", "");
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if (pat.EndsWith("/")) pat += "index.html";
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if (File.Exists(Files + Path.DirectorySeparatorChar + pat))
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{
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var ex = Path.GetExtension(Files + Path.DirectorySeparatorChar + pat);
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if (ex == string.Empty) ex = ".txt";
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ex = ex.Substring(1);
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response.SetBytes(File.ReadAllBytes(Files + Path.DirectorySeparatorChar + pat)).SetStatus(200).ContentType = GetMimeType(ex);
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}
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else next();
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}
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}
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public class HTTPConditionHandler : HTTPHandler
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{
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HTTPHandler Handler = null;
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Func<HTTPReq, HTTPRes, bool> Condition = (HTTPReq request, HTTPRes response) => { return false; };
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public HTTPConditionHandler(Func<bool> cond, HTTPHandler handler) { Handler = handler; }
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public override void Handle(HTTPReq request, HTTPRes response, Action next)
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{
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if(Handler == null || !Condition(request,response))
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{
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next();
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return;
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}
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Handler.Handle(request, response, next);
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}
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}
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public class HTTPServer
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{
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TcpListener listener;
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public HTTPServer(int port)
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{
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listener = new(IPAddress.Any, 8003);
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}
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public List<HTTPHandler> Handlers = new();
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public void Listen()
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{
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listener.Start();
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while (true)
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{
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try
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{
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var a = listener.AcceptTcpClient();
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var s = a.GetStream();
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byte[] bytes = new byte[2048];
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string data = null;
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int i;
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// Loop to receive all the data sent by the client.
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while ((i = s.Read(bytes, 0, bytes.Length)) != 0)
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{
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// Translate data bytes to a ASCII string.
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data = Encoding.ASCII.GetString(bytes, 0, i);
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var req = new HTTPReq(data);
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Console.WriteLine(req.ToString());
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if (req.valid)
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{
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HTTPRes res = new HTTPRes();
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int nextAct = 0;
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Action next = () => { };
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next = () => {
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if(nextAct >= Handlers.Count)
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{
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res.SetBytes("404 Not found.").SetStatus(404).ContentType = GetMimeType("txt");
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} else
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{
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Handlers[nextAct].Handle(req, res, () => {
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nextAct++;
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next();
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});
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}
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};
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next();
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s.Write(res.Build());
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}
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else
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{
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// Send back a response.
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var nf = "uuh";
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var nfb = Encoding.UTF8.GetBytes(nf);
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s.Write(
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Encoding.UTF8.GetBytes(
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$"HTTP/1.1 404 Not Found\n" +
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$"Content-Type: text/plain; charset=utf-8\n" +
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$"Content-Length: {nfb.Length}" +
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$"\n" +
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$"\n" +
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$"{nf}"
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)
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);
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}
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex);
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}
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}
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}
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}
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static void Main(string[] args)
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{
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Console.WriteLine("hello");
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HTTPServer http = new(8003);
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http.Handlers.Add(new HTTPStaticFilesHandler("htdocs"));
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/*http.Handlers.Add(new HTTPGetHandler("/", (req, res, next) =>
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{
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res.SetStatus(200).SetBytes("Hello! This is a test");
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}));
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http.Handlers.Add(new HTTPGetHandler("/2", (req, res, next) =>
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{
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res.SetStatus(200).SetBytes("Hello! This is a second test!");
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}));
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http.Handlers.Add(new HTTPServeFileHandler("/favicon.ico", "favicon.ico",GetMimeType("ico")));*/
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http.Listen();
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}
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private static string GetStatusFromNum(int v)
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{
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return v switch
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{
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200 => "200 OK",
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400 => "400 Bad Request",
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401 => "401 Unauthorized",
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403 => "403 Forbidden",
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404 => "404 Not Found",
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_ => "501 Not Implemented"
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};
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}
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private static string GetMimeType(string v)
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{
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/*
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image/apng: Animated Portable Network Graphics (APNG)
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image/avif : AV1 Image File Format (AVIF)
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image/gif: Graphics Interchange Format (GIF)
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image/jpeg: Joint Photographic Expert Group image (JPEG)
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image/png: Portable Network Graphics (PNG)
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image/svg+xml: Scalable Vector Graphics (SVG)
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image/webp: Web Picture format (WEBP)
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*/
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return v switch
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{
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// text
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"txt" => "text/plain",
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"css" => "text/css",
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"js" => "text/javascript",
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"html" => "text/html",
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"json" => "application/json",
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// image
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"webp" => "image/webp",
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"png" => "image/png",
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"jpg" or "jpeg" => "image/jpeg",
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"svg" => "image/svg+xml",
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"gif" => "image/gif",
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"ico" => "image/x-icon",
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// just download it man
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_ => "application/octet-stream"
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};
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}
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}
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}
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10
myownhttp.csproj
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10
myownhttp.csproj
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net9.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>
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25
myownhttp.sln
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25
myownhttp.sln
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.14.36203.30 d17.14
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "myownhttp", "myownhttp.csproj", "{4E977172-6187-481D-B819-982A278D925E}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{4E977172-6187-481D-B819-982A278D925E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{4E977172-6187-481D-B819-982A278D925E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{4E977172-6187-481D-B819-982A278D925E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{4E977172-6187-481D-B819-982A278D925E}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {FB36ECD5-0874-4AB9-A8BB-2AF5DE85A8F9}
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EndGlobalSection
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EndGlobal
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