void SFtpBrowser::Transfer(int opcode, const String src, const String& dest)
{
	SFtp worker(session);
	Progress pi(this, src);

	worker.WhenProgress = [&pi](int64 done, int64 total) {
		pi.SetText(Format(t_("%1:s of %2:s is transferred"), FormatFileSize(done),
		                  FormatFileSize(total)));
		return pi.SetCanceled(int(done), int(total));
	};
	pi.Create();
	switch(opcode) {
	case GET: {
		pi.Title(t_("Downloading ") << GetFileName(src));
		FileOut fout(dest);
		if(fout && !worker.LoadFile(fout, src))
			ErrorOK(DeQtf(worker.GetErrorDesc()));
		break;
	}
	case PUT: {
		pi.Title(t_("Uploading ") << GetFileName(src)); // Not for use, only for testing
		String s = LoadFile(src);

		if(auto h = worker.OpenWrite(dest); h) {

			/*			int n = worker.Put(h, ~s, s.GetLength());
			            RLOG(String() << "Uploaded: " << n << ", filesize: " << s.GetLength());
			            RDUMP(worker.IsError());
			            if(worker.IsError())
			                ErrorOK(DeQtf(worker.GetErrorDesc()));
			            worker.Close(h);*/

			int64 size = s.GetLength(), count = 0;
			if(settings.log)
				RLOG(Format("File size %d", size));
			int chunkSize = 1024 * 64, thisTimeSize = 0;
			worker.WhenProgress(0, size);
			while(!(count >= size)) {
				thisTimeSize = (int)min<int64>(size - count, chunkSize);
				if(settings.log)
					RLOG(Format("======= size %d, count %d, chunkSize %d, min %d", size, count,
					            chunkSize, thisTimeSize));
				int x = worker.Put(h, (~s) + count, thisTimeSize);
				count += x;
				if(settings.log)
					RLOG(String() << "This time should be uploaded: " << thisTimeSize
					              << ", Real uploaded: " << x << ", Current Accumulated Count:"
					              << count << ", total filesize: " << size);
				// RDUMP(worker.IsError());
				if(worker.WhenProgress(count, size)) {
					break;
				}

				if(worker.IsError()) {
					ErrorOK("Upload failed : " + DeQtf(worker.GetErrorDesc()));
					break;
				}
			}

			worker.Close(h);
			break;
		}
		else if(settings.log)
			RLOG("Couldn't open file: " << src << ", error: " << worker.GetErrorDesc());

		break;
	}
	}
	LoadDir();
}