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Webserver Class
Author: Guitarman 04/15/2021
Language:
C#
Tags:
Description:
This is a simple http webserver class I found years ago.
Article:
I used this in a small file server I built some years back.
Full Source Code:
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace HS_WebServer
{
public class HS_Web_Server
{
/// <summary>
/// To see a file list with links use /* as the file name
/// </summary>
public bool AllowFileList { get; set; } = false;
/// <summary>
/// Defaults = "index.html, index.htm, default.html, and default.htm
/// </summary>
public string[] _indexFiles = {
"index.html",
"index.htm",
"default.html",
"default.htm"
};
/// <summary>
/// Check if the server has started
/// </summary>
public bool IsServerRunning { get; set; } = false;
//public event CurrentFile_EventHandler CurrentFile;
//public delegate void CurrentFile_EventHandler(string CF);
/// <summary>
/// IDictionary mime types
/// </summary>
public IDictionary<string, string> _mimeTypeMappings = new Dictionary<string, string>(StringComparer.InvariantCultureIgnoreCase) {
#region extension to MIME type list
{".asf", "video/x-ms-asf"},
{".asx", "video/x-ms-asf"},
{".avi", "video/x-msvideo"},
{".bin", "application/octet-stream"},
{".cco", "application/x-cocoa"},
{".crt", "application/x-x509-ca-cert"},
{".css", "text/css"},
{".deb", "application/octet-stream"},
{".der", "application/x-x509-ca-cert"},
{".dll", "application/octet-stream"},
{".dmg", "application/octet-stream"},
{".ear", "application/java-archive"},
{".eot", "application/octet-stream"},
{".exe", "application/octet-stream"},
{".flv", "video/x-flv"},
{".gif", "image/gif"},
{".hqx", "application/mac-binhex40"},
{".htc", "text/x-component"},
{".htm", "text/html"},
{".html", "text/html"},
{".ico", "image/x-icon"},
{".img", "application/octet-stream"},
{".iso", "application/octet-stream"},
{".jar", "application/java-archive"},
{".jardiff", "application/x-java-archive-diff"},
{".jng", "image/x-jng"},
{".jnlp", "application/x-java-jnlp-file"},
{".jpeg", "image/jpeg"},
{".jpg", "image/jpeg"},
{".js", "application/x-javascript"},
{".mml", "text/mathml"},
{".mng", "video/x-mng"},
{".mov", "video/quicktime"},
{".mp3", "audio/mpeg"},
{".mpeg", "video/mpeg"},
{".mpg", "video/mpeg"},
{".mp4", "video/mp4"},
{".msi", "application/octet-stream"},
{".msm", "application/octet-stream"},
{".msp", "application/octet-stream"},
{".pdb", "application/x-pilot"},
{".pdf", "application/pdf"},
{".pem", "application/x-x509-ca-cert"},
{".pl", "application/x-perl"},
{".pm", "application/x-perl"},
{".png", "image/png"},
{".prc", "application/x-pilot"},
{".ra", "audio/x-realaudio"},
{".rar", "application/x-rar-compressed"},
{".rpm", "application/x-redhat-package-manager"},
{".rss", "text/xml"},
{".run", "application/x-makeself"},
{".sea", "application/x-sea"},
{".shtml", "text/html"},
{".sit", "application/x-stuffit"},
{".swf", "application/x-shockwave-flash"},
{".tcl", "application/x-tcl"},
{".tk", "application/x-tcl"},
{".txt", "text/plain"},
{".war", "application/java-archive"},
{".wbmp", "image/vnd.wap.wbmp"},
{".wmv", "video/x-ms-wmv"},
{".xml", "text/xml"},
{".xpi", "application/x-xpinstall"},
{".zip", "application/zip"},
#endregion
};
private Thread _serverThread;
private string _rootDirectory;
private HttpListener _listener;
private int _port;
public int Port
{
get { return _port; }
private set { }
}
/// <summary>
/// Construct server with given port.
/// </summary>
/// <param name="RootFolder">Directory path to serve.</param>
/// <param name="port">Server port number.</param>
public HS_Web_Server(string RootFolder, int port)
{
this.Initialize(RootFolder, port);
IsServerRunning = true;
}
/// <summary>
/// Construct server with suitable port.
/// </summary>
/// <param name="path">Directory path to serve.</param>
public HS_Web_Server(string RootFolder)
{
//get an empty port
TcpListener l = new TcpListener(IPAddress.Loopback, 0);
l.Start();
int port = ((IPEndPoint)l.LocalEndpoint).Port;
l.Stop();
this.Initialize(RootFolder, port);
IsServerRunning = true;
}
/// <summary>
/// Stop server and dispose all functions.
/// </summary>
public void Stop()
{
_serverThread.Abort();
_listener.Stop();
IsServerRunning = false;
}
private void Listen()
{
_listener = new HttpListener();
//_listener.Prefixes.Add("http://127.0.0.1:" + _port.ToString() + "/");
_listener.Prefixes.Add("http://localhost:" + _port.ToString() + "/");
//_listener.Prefixes.Add("http://+:" + _port.ToString() + "/");
//_listener.IgnoreWriteExceptions = true;
_listener.Start();
while (true)
{
try
{
HttpListenerContext context = _listener.GetContext();
Process(context);
}
catch (Exception)
{
}
}
}
private void Process(HttpListenerContext context)
{
string filename = context.Request.Url.AbsolutePath;
//Console.WriteLine(filename);
//CurrentFile.Invoke(filename);
filename = filename.Substring(1);
//file list
if (filename == "*" && AllowFileList == true)
{
try
{
int FileCount = 0;
string FileList = null;
FileList += "<strong>File List</strong>";
FileList += "<hr/>";
DirectoryInfo di = new DirectoryInfo(_rootDirectory);
foreach (var item in di.GetFiles(@"*.*", SearchOption.AllDirectories))
{
string vPath = item.FullName.Replace(_rootDirectory, "").Replace(@"\", "/");
FileCount += 1;
FileList += "<strong>" + FileCount + ": " + "</strong>" + "<a href='" + vPath + "'>" + item.Name + "</a>" + "<br/>";
}
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(FileList);
context.Response.ContentLength64 = buffer.Length;
Stream output = context.Response.OutputStream;
output.Write(buffer, 0, buffer.Length);
context.Response.StatusCode = (int)HttpStatusCode.OK;
context.Response.OutputStream.Flush();
}
catch
{
context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
}
}
//Json file list
//if (filename == "json*" && AllowJsonFileList == true)
//{
// try
// {
// string responseString = JsonConvert.SerializeObject(Directory.GetFiles(_rootDirectory, @"*.*", SearchOption.AllDirectories));
// byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
// context.Response.ContentLength64 = buffer.Length;
// Stream output = context.Response.OutputStream;
// output.Write(buffer, 0, buffer.Length);
// context.Response.StatusCode = (int)HttpStatusCode.OK;
// context.Response.OutputStream.Flush();
// }
// catch
// {
// context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
// }
//}
if (string.IsNullOrEmpty(filename))
{
foreach (string indexFile in _indexFiles)
{
if (File.Exists(Path.Combine(_rootDirectory, indexFile)))
{
filename = indexFile;
break;
}
}
}
filename = Path.Combine(_rootDirectory, filename);
if (File.Exists(filename))
{
try
{
using (Stream input = new FileStream(filename, FileMode.Open)) //Stream input = new FileStream(filename, FileMode.Open);
{
//Adding permanent http response headers
string mime;
context.Response.ContentType = _mimeTypeMappings.TryGetValue(Path.GetExtension(filename), out mime) ? mime : "application/octet-stream";
context.Response.ContentLength64 = input.Length;
context.Response.AddHeader("Date", DateTime.Now.ToString("r"));
context.Response.AddHeader("Last-Modified", System.IO.File.GetLastWriteTime(filename).ToString("r"));
if (context.Request.HttpMethod != "HEAD")
{
byte[] buffer = new byte[1024 * 16];
int nbytes;
while ((nbytes = input.Read(buffer, 0, buffer.Length)) > 0)
context.Response.OutputStream.Write(buffer, 0, nbytes);
}
input.Close();
}
context.Response.StatusCode = (int)HttpStatusCode.OK;
context.Response.OutputStream.Flush();
}
catch (Exception)
{
context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
}
}
else
{
context.Response.StatusCode = (int)HttpStatusCode.NotFound;
}
context.Response.OutputStream.Close();
}
private void Initialize(string path, int port)
{
this._rootDirectory = path;
this._port = port;
_serverThread = new Thread(this.Listen)
{
IsBackground = true
};
_serverThread.Start();
}
}
}Back
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