/// <summary>
/// Uploads a file that is passed as a stream.
/// </summary>
/// <param name="request">Stream of file for upload.</param>
public void UploadFile(RemoteFileInfo request)
{
// report start
Console.WriteLine("Start uploading " + request.FileName);
Console.WriteLine("Size " + request.Length);
// create output folder, if does not exist
if (!Directory.Exists("Upload"))Directory.CreateDirectory("Upload");
// kill target file, if already exists
string filePath = Path.Combine("Upload", request.FileName);
if (File.Exists(filePath)) File.Delete(filePath);
int chunkSize = 2048;
byte[] buffer = new byte[chunkSize];
using (FileStream writeStream = new FileStream(filePath, FileMode.CreateNew, FileAccess.Write))
{
do
{
// read bytes from input stream
int bytesRead = request.FileByteStream.Read(buffer, 0, chunkSize);
if (bytesRead == 0) break;
// write bytes to output stream
writeStream.Write(buffer, 0, bytesRead);
} while (true);
// report end
Console.WriteLine("Done!");
// close stream at the end of reading
writeStream.Close();
}
}
/// <summary>
/// Sends a stream for given requested file.
/// </summary>
/// <param name="request">File that will be downloaded from the service.</param>
/// <returns></returns>
public RemoteFileInfo DownloadFile(DownloadRequest request)
{
// get some info about the input file
string filePath = Path.Combine("Upload", request.FileName);
FileInfo fileInfo = new FileInfo(filePath);
// report start
Console.WriteLine("Sending stream " + request.FileName + " to client");
Console.WriteLine("Size " + fileInfo.Length);
// check if exists
if (!fileInfo.Exists) throw new FileNotFoundException("File not found", request.FileName);
// open stream
FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
// return result
RemoteFileInfo result = new RemoteFileInfo
{
FileName = request.FileName,
Length = fileInfo.Length,
FileByteStream = stream
};
// return file stream
return result;
// after returning to the client download starts. Stream remains open and on server and the client reads it, although the execution of this method is completed.
}
