Fix path security bug and added features

RouteServer now returns NotFoundServer or another server
MountableServer now can implicitly support NotFoundServer

LICENSE.md

@@ -1,24 +1,620 @@
-The MIT License (MIT)
+### GNU GENERAL PUBLIC LICENSE
 
-Copyright (c) Darko Jurić
+Version 3, 29 June 2007
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of
+Copyright (C) 2007 Free Software Foundation, Inc.
-this software and associated documentation files (the "Software"), to deal in
+<https://fsf.org/>
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+license document, but changing it is not allowed.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+### Preamble
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+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+#### 16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+#### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
 Licensing for JSON.NET dependency also applies: https://www.newtonsoft.com/json
 Licensing for SimpleHttp also applies: https://github.com/dajuric/simple-http

README.md

@@ -1,27 +1,52 @@
 # Tesses.WebServer
 [![Tesses.WebServer Nuget](https://badgen.net/nuget/v/Tesses.WebServer)](https://www.nuget.org/packages/Tesses.WebServer/)
-<br>
-<br>
 ![Tesses.WebServer Downloads](https://badgen.net/nuget/dt/Tesses.WebServer)
-<br>
+
+# License
+Starting with 1.0.3.9 this library will use GPL-3.0
+If you can not use GPL either use 1.0.3.8 or use another library
+
 A TcpListener HTTP Server
 
-Currently Supports
+WARNING: use at least version 1.0.4.2 because of security issue with paths
+
+To make your life easier, install [Tesses.WebServer.EasyServer](https://www.nuget.org/packages/Tesses.WebServer.EasyServer) alongside [Tesses.WebServer](https://www.nuget.org/packages/Tesses.WebServer) and use this code:
+
+```csharp
+using Tesses.WebServer;
+using Tesses.WebServer.EasyServer;
+
+...
+
+StaticServer server=new StaticServer(""); //or any server
+
+...
+
+server.StartServer(9500); //or any port number 
+//and it will print your ips to console with 
+//the message Almost ready to Listen
+```
+
+# Currently Supports
 - GET+HEAD+POST Requests
-- Seekable Video Files (Using Range)
+- Seekable Video Files (or any file) (Using Range)
-- Can Send Json To Client with helper function (uses Newtonsoft.Json)
+- Can Send/Receive Json To/From Client with helper functions (uses Newtonsoft.Json)
 - Cors Header
-- HTTPS Support (At least I think It will work)
+- Chunked encoding
+- Tesses.IVirtualFileSystem support (Work in progress and buggy)
+- wii-linux-ngx using this copy of [mono](https://tesses.net/apps/tytd/2022/wii.php)
 
 # Classes To Make It Easier
 - Static Website Class (Can pass in other class (instead of 404 when file doesnt exist) can choose other names other than index.html, index.htm, default.html, default.htm)
 - 404 Not Found Class
 - Mount class (So you could use Multiple Apis, And Static Sites If you want)
 - Basic Auth Class
-- Route Class (Just like dajuric/simple-http)
+- Route Class (Just like dajuric/simple-http, except it uses query parameters)
-- Host Name Class (like Mount Class but is used for hostnames/ip addresses like tesses.cf, 192.168.0.142, demilovato.com, ebay.com)
+- Host Name Class (like Mount Class but is used for hostnames/ip addresses like tesses.net, 192.168.0.142, demilovato.com, ebay.com, tessesstudios.com, godworldwide.org)
+- Path Value Class (can handle paths like this /user/Jehovah/files where Jehovah is the path element)
 
 # Might Happen But not sure
-- WebDav Class
+- WebDav Class (and may be used in a seperate library)
+- Reverse Proxy (in a seperate library)
 
 > Note: Range code, POST code and Route Class is not mine its a modified version of the code from ( [dajuric/simple-http](https://github.com/dajuric/simple-http/blob/master/Source/SimpleHTTP/Extensions/Response/ResponseExtensions.PartialStream.cs "dajuric/simple-http"))

Tesses.WebServer.ClientTest/Program.cs

@@ -0,0 +1,19 @@
+
+using System.Net.Http.Json;
+using System.Text;
+
+HttpClient client = new HttpClient();
+
+HttpRequestMessage requestMessage=new HttpRequestMessage(HttpMethod.Get,"http://localhost:24240/api/route/jsonEndpoint");
+requestMessage.Headers.Add("Authorization",$"Basic {Convert.ToBase64String(Encoding.UTF8.GetBytes("demi:password123"))}");
+requestMessage.Content = JsonContent.Create(new Obj());
+var resp=await client.SendAsync(requestMessage);
+Console.WriteLine(await resp.Content.ReadAsStringAsync());
+
+
+public class Obj
+{
+    public string Name {get;set;}="Demetria Devonne Lovato";
+
+    public DateTime Birthday {get;set;}=new DateTime(1992,8,20);
+}

Tesses.WebServer.ClientTest/Tesses.WebServer.ClientTest.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Tesses.WebServer.Console/Program.cs

@@ -2,7 +2,12 @@
 using Tesses.WebServer;
 namespace Tesses.WebServer.ConsoleApp
 {
+    class JsonObj
+    {
+        public string Name {get;set;}="";
 
+        public DateTime Birthday {get;set;}=DateTime.Now;
+    }
     class MainClass
     {
         public static void Main(string[] args)
@@ -16,6 +21,27 @@ namespace Tesses.WebServer.ConsoleApp
                 await ctx.SendTextAsync("Demetria Devonne Lovato 8/20/1992");
             });
 
+            rserver.Add("/jsonEndpoint",async(ctx)=>{
+                var res=await ctx.ReadJsonAsync<JsonObj>();
+                if(res !=null)
+                {
+                    Console.WriteLine($"Name: {res.Name}");
+                    Console.WriteLine($"Birthday: {res.Birthday.ToShortDateString()}");
+                    await ctx.SendTextAsync("The meaning of life is 42","text/plain");
+                }
+            });
+            rserver.Add("/typewriter",(ctx)=>{
+                using(var sw=ctx.GetResponseStreamWriter("text/plain"))
+                {
+                    foreach(var c in "This is a typewriter\nwell this is cool\nThis is thanks to the chunked stream.")
+                    {
+                        sw.Write(c);
+                        sw.Flush();
+                        System.Threading.Thread.Sleep(50);
+                    }
+                }
+            });
+
             var ip=System.Net.IPAddress.Any;
             StaticServer static_server = new StaticServer(System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyVideos));
             MountableServer mountable = new MountableServer(static_server);

Tesses.WebServer.Console/Tesses.WebServer.Console.csproj

@@ -6,7 +6,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>

Tesses.WebServer.FileServer/Program.cs

@@ -0,0 +1,29 @@
+using Tesses;
+using Tesses.WebServer;
+using Tesses.VirtualFilesystem;
+using Tesses.VirtualFilesystem.Filesystems;
+namespace Tesses.WebServer.ConsoleApp
+{
+
+    class MainClass
+    {
+        public static void Main(string[] args)
+        {
+            
+            var ip=System.Net.IPAddress.Any;
+            var lfs=new LocalFileSystem().GetSubdirFilesystem(Special.CurDir / "files");
+            
+            StaticServer static_server = new StaticServer(lfs,true);
+            static_server.AllowUpload=true;
+            static_server.RedirectToRootInsteadOfNotFound = true;
+            
+            HttpServerListener s = new HttpServerListener(new System.Net.IPEndPoint(ip, 24240),static_server);
+
+            
+
+            s.ListenAsync(System.Threading.CancellationToken.None).Wait();
+        }
+
+       
+    }
+}

Tesses.WebServer.FileServer/Tesses.WebServer.FileServer.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\Tesses.WebServer.NetStandard\Tesses.WebServer.NetStandard.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Tesses.VirtualFilesystem.Local" Version="1.0.0" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Tesses.WebServer.FileServer/files/apple/demi-lovato/file.txt

@@ -0,0 +1 @@
+Hi

Tesses.WebServer.FileServer/files/index.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    <h1>Hello</h1>
+</body>
+</html>

Tesses.WebServer.NetStandard/ServerContext.cs

@@ -2,6 +2,7 @@
 using System.IO;
 using System;
 using System.Net;
+using System.Text;
 
 namespace Tesses.WebServer
 {
@@ -70,6 +71,20 @@ internal class SizedStream : Stream
 }
     public class ServerContext
     {
+        const string bad_chars = "<>?/\\\"*|:";
+        public static string FixFileName(string filename,bool requireAscii=false)
+        {
+            StringBuilder builder=new StringBuilder();
+            foreach(var c in filename)
+            {
+                if(char.IsControl(c)) continue;
+                if(requireAscii && c > 127) continue;
+                if(bad_chars.Contains(c.ToString())) continue;
+                builder.Append(c);
+            }
+
+            return builder.ToString();
+        }
         /// <summary>
         /// Some user data
         /// </summary>
@@ -79,6 +94,53 @@ internal class SizedStream : Stream
         /// Method (ex GET, POST, HEAD)
         /// </summary>
         public string Method { get; set; }
+        
+        Func<bool> isConnected;
+
+        public bool Connected {
+            get{
+                if(isConnected != null)
+                {
+                    return isConnected();
+                }
+                return true;
+            }
+        }
+        public ServerContext(string method,Stream strm,string path,Dictionary<string,List<string>> headers,Func<bool> isConnected)
+        {
+                Method = method;
+            NetworkStream = strm;
+            RequestHeaders = headers;
+            ResponseHeaders = new Dictionary<string, List<string>>();
+            QueryParams = new Dictionary<string, List<string>>();
+            ResponseHeaders.Add("Server","Tesses.WebServer");
+            ResponseHeaders.Add("Connection","close");
+            RawUrl=path;
+            StatusCode = 200;
+
+            // /joel/path/luigi?local=jim&john_surname=connor&demi_surname=lovato&local=tim
+
+            string[] splitUrl = path.Split(new char[] { '?' }, 2);
+
+            if (splitUrl.Length > 0)
+            {
+                UrlPath = splitUrl[0];
+                OriginalUrlPath=splitUrl[0];
+                if (splitUrl.Length == 2)
+                {
+                    //local=jim&john_surname=connor&demi_surname=lovato&local=tim
+                    //we want to split on &
+                    q_parm = splitUrl[1];
+                }
+                else
+                {
+                    q_parm = "";
+                }
+                ResetQueryParms();
+            }
+           
+            this.isConnected=isConnected;
+        }
         public ServerContext(string method,Stream strm,string path,Dictionary<string,List<string>> headers)
         {
             Method = method;
@@ -111,7 +173,7 @@ internal class SizedStream : Stream
                 }
                 ResetQueryParms();
             }
-           
+            isConnected=null;
         }
         /// <summary>
         /// Reset query parms (If api sets them)
@@ -230,6 +292,10 @@ internal class SizedStream : Stream
                      return new SizedStream(NetworkStream,len);
                 }
             }
+            else if(RequestHeaders.TryGetFirst("Transfer-Encoding",out var res) && res == "chunked")
+            {
+                return new ChunkedStream(NetworkStream,true);
+            }
             //DajuricSimpleHttpExtensions.Print("Returns NetworkStream");
             return NetworkStream;
         }   

Tesses.WebServer.NetStandard/SimpleHttpCode.cs

@@ -7,6 +7,7 @@ using System.Runtime.CompilerServices;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
+using HeyRed.Mime;
 
 namespace Tesses.WebServer
 {
@@ -78,8 +79,100 @@ namespace Tesses.WebServer
 
             return str;
         }
+        public static void SendNonSeekableStream(this ServerContext ctx,Stream strm,long readFor=-1,string contentType = "application/octet-stream")
+        {
+            try
+            {
+                var strm2=new ChunkedStream(ctx.NetworkStream,false);
+            long tread=0;
+            byte[] buffer=new byte[8*1024*1024];
+            int read=0;
+            do
+            {  
+                if(readFor > -1){
+                    read=(int)Math.Min(buffer.Length,readFor-tread);
+                }else{
+                    read=buffer.Length;
+                }
+                if(read == 0) break;
+                read = strm.Read(buffer,0,read);
+                strm2.Write(buffer,0,read);
+            }while(read > 0);
+            } finally {
+            strm.Close();
+            ctx.NetworkStream.Close();
+            }
+        }
+        public static async Task SendNonSeekableStreamAsync(this ServerContext ctx,Stream strm,long readFor=-1,string contentType="application/octet-stream")
+        {
+            try
+            {
+                 var strm2=new ChunkedStream(ctx.NetworkStream,false);
+            long tread=0;
+            byte[] buffer=new byte[8*1024*1024];
+            int read=0;
+            do
+            {  
+                if(readFor > -1){
+                    read=(int)Math.Min(buffer.Length,readFor-tread);
+                }else{
+                    read=buffer.Length;
+                }
+                if(read == 0) break;
+                read = await strm.ReadAsync(buffer,0,read);
+                await strm2.WriteAsync(buffer,0,read);
+            }while(read > 0);
+            } finally {
+            strm.Close();
+            ctx.NetworkStream.Close();
+            }
+        }
+        public static void SendStream(this ServerContext ctx,Stream strm,string contentType="application/octet-stream")
+        {
+               //ctx.StatusCode = 200;
+            int start = 0, end = (int)strm.Length - 1;
+            if (ctx.RequestHeaders.ContainsKey(BYTES_RANGE_HEADER) && strm.CanSeek)
+            {
+                if (ctx.RequestHeaders[BYTES_RANGE_HEADER].Count > 1)
+                {
+                    throw new NotSupportedException("Multiple 'Range' headers are not supported.");
+                }
+                var range = ctx.RequestHeaders[BYTES_RANGE_HEADER][0].Replace("bytes=", String.Empty)
+                                   .Split(new string[] { "-" }, StringSplitOptions.RemoveEmptyEntries)
+                                   .Select(x => Int32.Parse(x))
+                                   .ToArray();
+
+                start = (range.Length > 0) ? range[0] : 0;
+                end = (range.Length > 1) ? range[1] : (int)(strm.Length - 1);
 
 
+                var hdrs = ctx.ResponseHeaders;
+                hdrs.Add("Accept-Ranges", "bytes");
+                hdrs.Add("Content-Range", "bytes " + start + "-" + end + "/" + strm.Length);
+                ctx.StatusCode = 206;
+
+
+            }
+            ctx.ResponseHeaders.Add("Content-Length", (end - start + 1).ToString());
+            
+            ctx.WithMimeType(contentType);
+
+            ctx.WriteHeaders();
+            if (!ctx.Method.Equals("HEAD", StringComparison.Ordinal))
+            {
+                try
+                {
+                    if(strm.CanSeek)
+                    strm.Position = start;
+                    strm.CopyTo(ctx.NetworkStream, Math.Min(8 * 1024 * 1024, end - start + 1));
+                }
+                finally
+                {
+                    strm.Close();
+                    ctx.NetworkStream.Close();
+                }
+            }
+        }
         public static async Task SendStreamAsync(this ServerContext ctx, Stream strm, string contentType = "application/octet-stream")
         {
             //ctx.StatusCode = 200;
@@ -116,7 +209,7 @@ namespace Tesses.WebServer
                 {
                     if(strm.CanSeek)
                     strm.Position = start;
-                    strm.CopyTo(ctx.NetworkStream, Math.Min(8 * 1024 * 1024, end - start + 1));
+                    await strm.CopyToAsync(ctx.NetworkStream, Math.Min(8 * 1024 * 1024, end - start + 1));
                 }
                 finally
                 {
@@ -125,8 +218,118 @@ namespace Tesses.WebServer
                 }
             }
         }
+         /// <summary>
+        /// Send file to client (supports range partial content)
+        /// </summary>
+        /// <param name="ctx">ServerContext</param>
+        /// <param name="file">the file to serve</param>
         
-        static Dictionary<string, HttpFile> ParseMultipartForm(ServerContext serverCtx, OnFile onFile)
+        public static async Task SendFileAsync(this ServerContext ctx, string file)
+        {
+            if(!File.Exists(file))
+            {
+                await ctx.SendNotFoundAsync();
+                return;
+            }
+            if(!ctx.RequestHeaders.ContainsKey(BYTES_RANGE_HEADER) && handleIfCached())
+                return;
+            
+            using(var f = File.OpenRead(file))
+            {
+                await ctx.SendStreamAsync(f,MimeTypesMap.GetMimeType(file));
+            }
+
+            bool handleIfCached()
+            {
+                var lastModified = File.GetLastWriteTimeUtc(file);
+                string etag=lastModified.Ticks.ToString("x");
+                ctx.ResponseHeaders.Add("ETag",etag);
+                ctx.ResponseHeaders.Add("Last-Modified",lastModified.ToString("R"));
+
+                if(ctx.RequestHeaders.TryGetFirst("If-None-Match",out var ifNoneMatch))
+                {
+                     var eTags = ifNoneMatch.Split(',').Select(x => x.Trim()).ToArray();
+                    if (eTags.Contains(etag))
+                    {
+                        ctx.StatusCode = 304;
+                        ctx.WriteHeaders();
+                        
+                        return true;
+                    }
+                }
+
+               
+                if(ctx.RequestHeaders.TryGetFirst("If-Modified-Since",out var iMs) && DateTime.TryParse(iMs,out DateTime ifModifiedSince))
+                {
+                    if (lastModified <= ifModifiedSince)
+                    {
+                        ctx.StatusCode = 304;
+                        ctx.WriteHeaders();
+                        
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+        }
+         /// <summary>
+        /// Send file to client (supports range partial content)
+        /// </summary>
+        /// <param name="ctx">ServerContext</param>
+        /// <param name="file">the file to serve</param>
+        
+        public static void SendFile(this ServerContext ctx, string file)
+        {
+            if(!File.Exists(file))
+            {
+                ctx.SendNotFound();
+                return;
+            }
+            if(!ctx.RequestHeaders.ContainsKey(BYTES_RANGE_HEADER) && handleIfCached())
+                return;
+            
+            using(var f = File.OpenRead(file))
+            {
+                ctx.SendStream(f,MimeTypesMap.GetMimeType(file));
+            }
+
+            bool handleIfCached()
+            {
+                var lastModified = File.GetLastWriteTimeUtc(file);
+                string etag=lastModified.Ticks.ToString("x");
+                ctx.ResponseHeaders.Add("ETag",etag);
+                ctx.ResponseHeaders.Add("Last-Modified",lastModified.ToString("R"));
+
+                if(ctx.RequestHeaders.TryGetFirst("If-None-Match",out var ifNoneMatch))
+                {
+                     var eTags = ifNoneMatch.Split(',').Select(x => x.Trim()).ToArray();
+                    if (eTags.Contains(etag))
+                    {
+                        ctx.StatusCode = 304;
+                        ctx.WriteHeaders();
+                        
+                        return true;
+                    }
+                }
+
+               
+                if(ctx.RequestHeaders.TryGetFirst("If-Modified-Since",out var iMs) && DateTime.TryParse(iMs,out DateTime ifModifiedSince))
+                {
+                    if (lastModified <= ifModifiedSince)
+                    {
+                        ctx.StatusCode = 304;
+                        ctx.WriteHeaders();
+                        
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+        }
+
+        static Dictionary<string, List<HttpFile>> ParseMultipartForm(ServerContext serverCtx, OnFile onFile)
         {
             var args = serverCtx.QueryParams;
             string content_type=serverCtx.RequestHeaders.GetFirst("Content-Type");
@@ -137,7 +340,7 @@ namespace Tesses.WebServer
             boundary = "--" + boundary;
 
 
-            var files = new Dictionary<string, HttpFile>();
+            var files = new Dictionary<string, List<HttpFile>>();
             var inputStream = new BufferedStream(serverCtx.GetRequestStream());
              //Print("Before ParseUntillBoundaryEnd");
               
@@ -273,7 +476,7 @@ namespace Tesses.WebServer
         }
 
         /// <summary>
-        /// Parses body of the request including form and multi-part form data.
+        /// Parses body of the request including form and multi-part form data, allowing multiple file with same key.
         /// </summary>
         /// <param name="request">HTTP request.</param>
         /// <param name="args">Key-value pairs populated by the form data by this function.</param>
@@ -282,7 +485,7 @@ namespace Tesses.WebServer
         /// <para>By default, <see cref="MemoryStream"/> is used, but for large files, it is recommended to open <see cref="FileStream"/> directly.</para>
         /// </param>
         /// <returns>Name-file pair collection.</returns>
-        public static Dictionary<string, HttpFile> ParseBody(this ServerContext request, OnFile onFile)
+        public static Dictionary<string, List<HttpFile>> ParseBodyMultiple(this ServerContext request, OnFile onFile)
         {
             if (request == null)
                 throw new ArgumentNullException(nameof(request));
@@ -294,21 +497,119 @@ namespace Tesses.WebServer
                 throw new ArgumentNullException(nameof(onFile));
 
 
-            var files = new Dictionary<string, HttpFile>();
+            
             string content_type = request.RequestHeaders.GetFirst("Content-Type");
             if (content_type.StartsWith("application/x-www-form-urlencoded",StringComparison.Ordinal))
             {
                 ParseForm(request);
+                var files = new Dictionary<string, List<HttpFile>>();
+                return files;
             }
             else if (content_type.StartsWith("multipart/form-data",StringComparison.Ordinal))
             {
-                files = ParseMultipartForm(request, onFile);
+                return ParseMultipartForm(request, onFile);
             }
             else
                 throw new NotSupportedException("The body content-type is not supported.");
 
+            
+        }
+        /// <summary>
+        /// Parses body of the request including form and multi-part form data.
+        /// </summary>
+        /// <param name="request">HTTP request.</param>
+        /// <param name="args">Key-value pairs populated by the form data by this function.</param>
+        /// <param name="onFile">
+        /// Function called if a file is about to be parsed. The stream is attached to a corresponding <see cref="HttpFile"/>.
+        /// <para>By default, <see cref="MemoryStream"/> is used, but for large files, it is recommended to open <see cref="FileStream"/> directly.</para>
+        /// </param>
+        /// <returns>Name-file pair collection.</returns>
+        public static Dictionary<string, HttpFile> ParseBody(this ServerContext request, OnFile onFile)
+        {
+            var res=ParseBodyMultiple(request,onFile);    
+            Dictionary<string,HttpFile> files = new Dictionary<string, HttpFile>();
+            foreach(var item in res)
+            {
+                if(item.Value.Count > 0)
+                {
+                    files.Add(item.Key,item.Value[0]);
+                }
+            }
             return files;
         }
+        /// <summary>
+        /// Parses body of the request including form and multi-part form data, allowing multiple file with same key and storing the files in a temp directory specified by the user.
+        /// </summary>
+        /// <param name="request">HTTP request.</param>
+        /// <param name="tempDir">The root directory to store all the uploads in</param>
+        /// <returns>A HttpFileResponse Containing Paths to files, Dispose only deletes the files, so if you want to keep the files don't dispose it.</returns>
+        public static HttpFileResponse ParseBodyWithTempDirectory(this ServerContext request, string tempDir)
+        {
+            Directory.CreateDirectory(tempDir);
+            
+
+            Stream Open(string field, string filename, string contentType) 
+            {
+                string dir=Path.Combine(tempDir,ServerContext.FixFileName(field));
+                Directory.CreateDirectory(dir);
+                string filename2 = Path.Combine(dir,ServerContext.FixFileName(filename));
+                return File.Create(filename2);
+            }
+            List<HttpFileResponseEntry> responseEntries=new List<HttpFileResponseEntry>();
+            foreach(var item in ParseBodyMultiple(request,Open))
+            {
+                foreach(var i2 in item.Value)
+                {
+                    responseEntries.Add(new HttpFileResponseEntry(Path.Combine(tempDir,ServerContext.FixFileName(item.Key),ServerContext.FixFileName(i2.FileName)),i2.FileName,item.Key,i2.ContentType));
+                    i2.Dispose();
+                }
+            }
+            return new HttpFileResponse(tempDir,responseEntries);
+        }
+    }
+
+    public sealed class HttpFileResponseEntry
+    {
+        public HttpFileResponseEntry(string path, string filename, string fieldname, string contype)
+        {
+            Path = path;
+            FileName = filename;
+            ContentType = contype;
+            FieldName = fieldname;
+        }
+        public string FileName {get;}
+
+        public string ContentType {get;}
+
+        public string Path {get;}
+
+        public string FieldName {get;}
+
+        public FileInfo FileInfo => new FileInfo(Path);
+
+        public Stream OpenRead()
+        {
+            return File.OpenRead(Path);
+        }
+        public void MoveTo(string dest)
+        {
+            File.Move(Path,dest);
+        }
+    }
+    public sealed class HttpFileResponse : IDisposable
+    {
+        public HttpFileResponse(string dir, IReadOnlyList<HttpFileResponseEntry> entries)
+        {
+            Directory = dir;
+            Files = entries;
+        }
+        public IReadOnlyList<HttpFileResponseEntry> Files {get;}
+        public string Directory {get;}
+
+        public void Dispose()
+        {
+           System.IO.Directory.Delete(Directory,true);
+        }
     }
 
     /// <summary>
@@ -396,25 +697,47 @@ namespace Tesses.WebServer
     public delegate void HttpAction(ServerContext ctx);
     public class RouteServer : Server
     {
+        public RouteServer() : this(new NotFoundServer())
+        {
+
+        }
+        public RouteServer(IServer otherServer)
+        {
+            this.otherServer=otherServer;
+        }
         public List<(ShouldProcessFunc ShouldProcessFunc, HttpActionAsync Action)> Methods = new List<(ShouldProcessFunc ShouldProcessFunc, HttpActionAsync Action)>();
+        private IServer otherServer;
+
         public override async Task GetAsync(ServerContext ctx)
         {
-            await Process(ctx);
+            if(!await Process(ctx))
+            {
+                await Guaranteed(otherServer).GetAsync(ctx);
+            }
         }
         public override async Task PostAsync(ServerContext ctx)
         {
-            await Process(ctx);
+            if(!await Process(ctx))
+            {
+                await Guaranteed(otherServer).PostAsync(ctx);
+            }
         }
         public override async Task OtherAsync(ServerContext ctx)
         { 
-            await Process(ctx);
+            if(!await Process(ctx))
+            {
+                await Guaranteed(otherServer).OtherAsync(ctx);
+            }
         }
 
         public override async Task OptionsAsync(ServerContext ctx)
         {
-            await Process(ctx);
+            if(!await Process(ctx))
+            {
+                await Guaranteed(otherServer).OptionsAsync(ctx);
+            }
         }
-        private async Task Process(ServerContext ctx)
+        private async Task<bool> Process(ServerContext ctx)
         {
             foreach(var (shouldProcessFunc,action) in Methods)
             {
@@ -425,8 +748,9 @@ namespace Tesses.WebServer
                 }
 
                 await action(ctx);
-                return;
+                return true;
             }
+            return false;
         }
         /// <summary>
         /// Adds the specified action to the route collection.

Tesses.WebServer.NetStandard/Tesses.WebServer.NetStandard.csproj

@@ -5,18 +5,20 @@
     <PackageId>Tesses.WebServer</PackageId>
     <Author>Mike Nolan</Author>
     <Company>Tesses</Company>
-     <Version>1.0.3.7</Version>
+     <Version>1.0.4.2</Version>
-    <AssemblyVersion>1.0.3.7</AssemblyVersion>
+    <AssemblyVersion>1.0.4.2</AssemblyVersion>
-    <FileVersion>1.0.3.7</FileVersion>
+    <FileVersion>1.0.4.2</FileVersion>
     <Description>A TCP Listener HTTP(s) Server</Description>
-    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+     <PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
+     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <PackageTags>HTTP, WebServer, Website</PackageTags>
-    <RepositoryUrl>https://gitlab.tesses.cf/tesses50/tesses.webserver</RepositoryUrl>
+    <RepositoryUrl>https://gitlab.tesses.net/tesses50/tesses.webserver</RepositoryUrl>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="MimeTypesMap" Version="1.0.8" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+    <PackageReference Include="Tesses.VirtualFileSystem.Base" Version="1.0.0" />
   </ItemGroup>
 
 </Project>

Tesses.WebServer.sln

@@ -7,6 +7,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tesses.WebServer.Console",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tesses.WebServer.NetStandard", "Tesses.WebServer.NetStandard\Tesses.WebServer.NetStandard.csproj", "{C76507C5-D30C-46CB-A527-5CF7090CAED6}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tesses.WebServer.FileServer", "Tesses.WebServer.FileServer\Tesses.WebServer.FileServer.csproj", "{50A4EEEE-1ACD-48C2-B454-77B7E1B6620A}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -24,5 +26,9 @@ Global
 		{C76507C5-D30C-46CB-A527-5CF7090CAED6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C76507C5-D30C-46CB-A527-5CF7090CAED6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C76507C5-D30C-46CB-A527-5CF7090CAED6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{50A4EEEE-1ACD-48C2-B454-77B7E1B6620A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{50A4EEEE-1ACD-48C2-B454-77B7E1B6620A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{50A4EEEE-1ACD-48C2-B454-77B7E1B6620A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{50A4EEEE-1ACD-48C2-B454-77B7E1B6620A}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal