Build your own Web server in C #

Web|web Service |web The personal collection of the server, only for archiving. Today, the disk is sorted, no place to put. Throw a blog.

Do not understand, don't ask me. Study for yourself.

Webserver.cs

Namespace Cnnbsun.webserver
{
Using System;
Using System.IO;
Using System.Net;
Using System.Net.Sockets;
Using System.Text;
Using System.Threading;


Class MyWebServer
{

Private TcpListener MyListener;
private int port = 8080; Select any idle port

Start and listen to the port
Start a concurrent listening process at the same time
Public MyWebServer ()
{
Try
{
Start and listen to the port
MyListener = new TcpListener (port);
Mylistener.start ();
Console.WriteLine ("Web Server Running ... Press ^c to Stop ... ");
Start a simultaneous listening process ' startlisten '
Thread th = new Thread (new ThreadStart (Startlisten));
Th. Start ();

}
catch (Exception e)
{
Console.WriteLine ("Error while listening to port:" +e.tostring ());
}
}
public void Sendheader (string shttpversion, string smimeheader, int itotbytes, string sstatuscode, ref Socket Mysocket)
{

String sbuffer = "";

if (smimeheader.length = 0)
{
Smimeheader = "text/html"; Default text/html
}

Sbuffer = sbuffer + shttpversion + sstatuscode + "\ r \ n";
Sbuffer = Sbuffer + "server:cx1193719-b\r\n";
Sbuffer = Sbuffer + "Content-type:" + Smimeheader + "\ r \ n";
Sbuffer = Sbuffer + "accept-ranges:bytes\r\n";
Sbuffer = Sbuffer + "Content-length:" + itotbytes + "\r\n\r\n";

byte[] Bsenddata = Encoding.ASCII.GetBytes (sbuffer);

Sendtobrowser (Bsenddata, ref mysocket);

Console.WriteLine ("Total Bytes:" + itotbytes.tostring ());

}

public void Sendtobrowser (String sData, ref Socket Mysocket)
{
Sendtobrowser (Encoding.ASCII.GetBytes (sData), ref mysocket);
}

public void Sendtobrowser (byte[] bsenddata, ref Socket Mysocket)
{
int numbytes = 0;

Try
{
if (mysocket.connected)
{
if ((numbytes = Mysocket.send (Bsenddata, bsenddata.length,0)) = = 1)
Console.WriteLine ("Socket Error cannot Send Packet");
Else
{
Console.WriteLine ("No.") of bytes Send {0} ", numbytes);
}
}
Else
Console.WriteLine ("Connection Failed ...");
}
catch (Exception e)
{
Console.WriteLine ("Error occurred: {0}", e);

}
}
public static void Main ()
{
MyWebServer MWS = new MyWebServer ();
}
public void Startlisten ()
{

int istartpos = 0;
String srequest;
String Sdirname;
String Srequestedfile;
String Serrormessage;
String Slocaldir;
Be aware of setting your own virtual directory/////////////////////////////////////
String smywebserverroot = "e:\\mywebserverroot\\"; Set up your virtual directory
//////////////////////////////////////////////////////////////////////////////////////////////////
String Sphysicalfilepath = "";
String sformattedmessage = "";
String sresponse = "";


while (true)
{
Accept New Connection
Socket mysocket = Mylistener.acceptsocket ();

Console.WriteLine ("Socket Type" +mysocket.sockettype);
if (mysocket.connected)
{
Console.WriteLine ("\nclient connected!! \n==================\nclient IP {0}\n ", mysocket.remoteendpoint);

byte[] breceive = new byte[1024];
int i = mysocket.receive (breceive,breceive.length,0);


Convert to String type
String sbuffer = Encoding.ASCII.GetString (breceive);


Process only "get" request type
if (sbuffer.substring (0,3)!= "get")
{
Console.WriteLine ("Process only GET request type ...");
Mysocket.close ();
Return
}

Find locations for "HTTP"
Istartpos = Sbuffer.indexof ("HTTP", 1);


String shttpversion = Sbuffer.substring (istartpos,8);


Get request type and file directory file name
Srequest = sbuffer.substring (0,istartpos-1);

Srequest.replace ("\", "/");


If the end is not a filename or ends with a "/"
if ((Srequest.indexof (".") <1) && (!srequest.endswith ("/"))
{
Srequest = srequest + "/";
}


Have to bring the request file name
Istartpos = Srequest.lastindexof ("/") + 1;
Srequestedfile = srequest.substring (Istartpos);


Get request File Directory
Sdirname = srequest.substring (Srequest.indexof ("/"), Srequest.lastindexof ("/")-3);


To get the virtual directory physical path
Slocaldir = Smywebserverroot;

Console.WriteLine ("Request file directory:" + Slocaldir);

if (slocaldir.length = 0)
{
Serrormessage = "Sendheader (Shttpversion, "", serrormessage.length, "404 Not Found", ref mysocket);
Sendtobrowser (Serrormessage, ref mysocket);
Mysocket.close ();
Continue
}


if (srequestedfile.length = 0)
{
Get request File name
Srequestedfile = "index.html";
}


/////////////////////////////////////////////////////////////////////
Get request file type (set to text/html)
/////////////////////////////////////////////////////////////////////

String Smimetype = "text/html";

Sphysicalfilepath = Slocaldir + srequestedfile;
Console.WriteLine ("Request file:" + Sphysicalfilepath);


if (file.exists (sphysicalfilepath) = = False)
{

Serrormessage = "Sendheader (Shttpversion, "", serrormessage.length, "404 Not Found", ref mysocket);
Sendtobrowser (Serrormessage, ref mysocket);

Console.WriteLine (Sformattedmessage);
}

Else
{
int itotbytes=0;

Sresponse = "";

FileStream fs = new FileStream (Sphysicalfilepath, FileMode.Open, FileAccess.Read, FileShare.Read);

BinaryReader reader = new BinaryReader (FS);
byte[] bytes = new Byte[fs. Length];
int read;
while (read = reader. Read (bytes, 0, bytes. Length))!= 0)
{
Sresponse = Sresponse + Encoding.ASCII.GetString (bytes,0,read);

Itotbytes = itotbytes + read;

}
Reader. Close ();
Fs. Close ();

Sendheader (Shttpversion, Smimetype, itotbytes, "OK", ref mysocket);
Sendtobrowser (bytes, ref mysocket);
Mysocket.send (bytes, bytes. length,0);

}
Mysocket.close ();
}
}
}


}

}