Use of C # Httpserver

In many cases, the applications we write need to provide an informational description or a sign function, hoping to use Httpserver to publish a simple website function, but do not want to rack a bloated HTTP server function,

At this point, the Httpserver functionality provided by the standard framework may be our choice.

The introduction of a using System.Net;

Two-start service

1   Public classServerhelper2     {3HttpListener HttpListener =NewHttpListener ();4          Public voidSetup (intport=8080)5         {            6Httplistener.authenticationschemes =authenticationschemes.anonymous;7HTTPLISTENER.PREFIXES.ADD (string. Format ("http://*:{0}/", port)); /if sent to port 8080 is not processed, it is all accepted here, + is all received8 Httplistener.start ();//Open service9 Ten Receive ();//asynchronously receives a request One         } A  -         Private voidReceive () -         { theHttplistener.begingetcontext (NewAsyncCallback (EndReceive),NULL); -         } -  -         voidEndReceive (IAsyncResult ar) +         { -             varContext =httplistener.endgetcontext (AR); + Dispather (context);//Parse Request A Receive (); at         } -  - Requesthelper Requesthelper; - Responsehelper Responsehelper; -         voidDispather (httplistenercontext context) -         { inHttpListenerRequest request=context. Request; -Httplistenerresponse response =context. Response; toRequesthelper =NewRequesthelper (request); +Responsehelper =NewResponsehelper (response); -Requesthelper.dispatchresources (fs = { the responsehelper.writetoclient (fs);//respond to the corresponding request *             }); $         }Panax Notoginseng}

Three-resolution request

1  Public classRequesthelper2     {3         Privatehttplistenerrequest request;4          PublicRequesthelper (httplistenerrequest request)5         {6              This. Request =request;7         }8          PublicStream Requeststream {Get;Set; }9          Public voidExtracheader ()Ten         { Onerequeststream=request. InputStream; A         } -  -          Public Delegate voidExecutingdispatch (FileStream FS); the          Public voiddispatchresources (executingdispatch action) -         { -             varRAWURL =request. The rawurl;//resource is placed by default in the Wwwroot file of the executing program, and the default document is Index.html -             stringFilePath =string. Format (@"{0}/wwwroot{1}", Environment.currentdirectory, RAWURL);//here corresponds to request other types of resources, slices, texts, etc. +             if(rawurl.length==1) -FilePath =string. Format (@"{0}/wwwroot/index.html", environment.currentdirectory);//default access to files +             Try { A             if(File.exists (filePath)) at             { -FileStream fs =NewFileStream (FilePath, FileMode.Open, fileaccess.readwrite); -                  -Action?. Invoke (FS); -                  -             } in             } -             Catch{return; } to         } +          Public voidResponsequerys () -         { the             varQuerys =request. QueryString; *             foreach(stringKeyinchQuerys. AllKeys) $             {Panax Notoginseng Varityquerys (Key,querys[key]); -             } the         } +  A         Private voidVarityquerys (stringKeystringvalue) the         { +             Switch(Key) -             { $                  Case "pic":P ictures (value); Break; $                  Case "text": texts (value); Break; -                 default:D efaults (value); Break; -             } the         } - Wuyi         Private voidPictures (stringID) the         { -  Wu         } -  About         Private voidTexts (stringID) $         { -  -         } -  A         Private voidDefaults (stringID) +         { the  -         } $  the}

Four response requests

 Public classResponsehelper {Privatehttplistenerresponse response;  PublicResponsehelper (httplistenerresponse response) { This. Response =response; OutputStream=Response.                   OutputStream; }         PublicStream OutputStream {Get;Set; }  Public classFileObject { PublicFileStream FS;  Public byte[] buffer; }         Public voidwritetoclient (FileStream FS) {response. StatusCode= $; byte[] buffer =New byte[1024x768]; FileObject obj=NewFileObject () {fs = FS, buffer =buffer}; Fs. BeginRead (Buffer,0, buffer. Length,NewAsyncCallback (EndWrite), obj); }               voidEndWrite (IAsyncResult ar) {varobj = ar. AsyncState asFileObject; varnum=obj.fs.EndRead (AR); Outputstream.write (Obj.buffer,0, num); if(Num <1) {
Obj.fs.Close (); Close file stream
Outputstream.close ();//Turn off the output stream, and if you do not close, the browser will be waiting for the state
  　　　　　　　　　　 return;
} obj.fs.BeginRead (Obj.buffer,0, Obj.buffer.Length,NewAsyncCallback (EndWrite), obj); }    }

Test results:

Prepare the index.html, which contains pictures and plain html

Resource directory:

Browser for access testing:

Summarize:

This article is just a simple test of httpserver, a simple request and response to the comb, for the need for complex browser functions, it is necessary to study the work of other browsers in detail

Use of C # Httpserver