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/////////////////////////////////////////////////////////////////////
// Identify the Physical Directory
/////////////////////////////////////////////////////////////////////
if ( sDirName == "/")
sLocalDir = sMyWebServerRoot;
else
{
//Get the Virtual Directory
sLocalDir = GetLocalPath(sMyWebServerRoot, sDirName);
}
Console.WriteLine("Directory Requested : " + sLocalDir);
//If the physical directory does not exists then
// dispaly the error message
if (sLocalDir.Length == 0 )
{
sErrorMessage = "<H2>Error!! Requested Directory
does not exists</H2><Br>";
//sErrorMessage = sErrorMessage + "Please check data\\Vdirs.Dat";
//Format The Message
SendHeader(sHttpVersion, "", sErrorMessage.Length,
" 404 Not Found", ref mySocket);
//Send to the browser
SendToBrowser(sErrorMessage, ref mySocket);
mySocket.Close();
continue;
}
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Note: Microsoft Internet Explorer usually displays a 'friendy' HTTP
Error Page if you want to display our error message then you need to disable
the 'Show friendly HTTP error messages' option under the 'Advanced' tab in Tools->Internet
Options. Next we look if the directory name is supplied, we call GetLocalPath
function to get the physical directory information, if the directory not found
(or does not mapped with entry in Vdir.Dat) error message is sent to the browser..
Next we will identify the file name, if the filename is not supplied by the user
we will call the GetTheDefaultFileName function to retrieve the filename, if
error occurred it is thrown to browser.
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/////////////////////////////////////////////////////////////////////
// Identify the File Name
/////////////////////////////////////////////////////////////////////
//If The file name is not supplied then look in the default file list
if (sRequestedFile.Length == 0 )
{
// Get the default filename
sRequestedFile = GetTheDefaultFileName(sLocalDir);
if (sRequestedFile == "")
{
sErrorMessage = "<H2>Error!!
No Default File Name Specified</H2>";
SendHeader(sHttpVersion,
"", sErrorMessage.Length, " 404 Not Found",
ref mySocket);
SendToBrowser ( sErrorMessage,
ref mySocket);
mySocket.Close();
return;
}
}
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Then we need to identify the Mime type:
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/////////////////////////////////////////////////////////////////////
// Get TheMime Type
/////////////////////////////////////////////////////////////////////
String sMimeType = GetMimeType(sRequestedFile);
//Build the physical path
sPhysicalFilePath = sLocalDir + sRequestedFile;
Console.WriteLine("File Requested : " + sPhysicalFilePath);
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Now the final steps of opening the requested file and sending it to the browser..
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if (File.Exists(sPhysicalFilePath) == false)
{
sErrorMessage = "<H2>404 Error! File Does Not
Exists...</H2>";
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);
// Create a reader that can read bytes from the FileStream.
BinaryReader reader = new BinaryReader(fs);
byte[] bytes = new byte[fs.Length];
int read;
while((read = reader.Read(bytes, 0, bytes.Length)) != 0)
{
// Read from the file and write
the data to the network
sResponse = sResponse + Encoding.ASCII.GetString(bytes,0,read);
iTotBytes = iTotBytes + read;
}
reader.Close();
fs.Close();
SendHeader(sHttpVersion, sMimeType, iTotBytes, "
200 OK", ref mySocket);
SendToBrowser(bytes, ref mySocket);
//mySocket.Send(bytes, bytes.Length,0);
}
mySocket.Close();
}
}
}
}
}
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