private async void sendFileNameAndPart(NetworkStream ns, string fileName, long fromByte, long toByte)
{
ClientUploadDownload cup = new ClientUploadDownload(fileName, fromByte, toByte);
string jasonStriing = JsonConvert.SerializeObject(cup);
byte[] jsonFile = ASCIIEncoding.ASCII.GetBytes(jasonStriing);
byte[] jsonFileLength = BitConverter.GetBytes(jsonFile.Length);
await ns.WriteAsync(jsonFileLength, 0, jsonFileLength.Length);
await ns.WriteAsync(jsonFile, 0, jsonFile.Length);
}
public async void getFileToDownload(NetworkStream ns)
{
string jsonFile;
byte[] jsonBytes;
byte[] jsonLengthBytes = new byte[4]; //int32
await ns.ReadAsync(jsonLengthBytes, 0, 4); // int32
jsonBytes = new byte[BitConverter.ToInt32(jsonLengthBytes, 0)];
await ns.ReadAsync(jsonBytes, 0, jsonBytes.Length);
jsonFile = ASCIIEncoding.ASCII.GetString(jsonBytes);
ClientUploadDownload cup = JsonConvert.DeserializeObject <ClientUploadDownload>(jsonFile);
startSendFile(cup, ns);
}
private async void startSendFile(ClientUploadDownload cup, NetworkStream ns)
{
FileStream fileStream = null;
FilesAndStatus fas = null;
foreach (FilesAndStatus tempFas in uploadFiles)
{
if (tempFas.FileName.Equals(cup.FileName))
{
fas = tempFas;
}
}
try
{
string path = currentUser.UpLoc + "\\" + cup.FileName;
FileInfo file = new FileInfo(path);
fileStream = new FileStream(file.FullName, FileMode.Open, FileAccess.Read);
long total = cup.ToByte - cup.FromByte;
long ToatlSent = 0;
long totalLeft = total;
int len = 0;
byte[] buffer = new byte[50000];
fileStream.Seek(cup.FromByte, 0);
while (ToatlSent < total && ns.CanWrite && activeFlag)
{
//Read from the File (len contains the number of bytes read)
if (totalLeft > 50000)
{
len = fileStream.Read(buffer, 0, buffer.Length);
}
else
{
len = fileStream.Read(buffer, 0, (int)totalLeft);
}
//Write the Bytes on the Socket
await ns.WriteAsync(buffer, 0, len);
//Increase the bytes Read counter
ToatlSent += len;
double pctread = ((double)ToatlSent / total) * 100;
fas.PbValue = Convert.ToInt32(pctread);
fas.Status = "Uploading";
while (bw.IsBusy)
{
;
}
bw.RunWorkerAsync();
}
}
catch (Exception e)
{
Console.WriteLine("A Exception occured in transfer" + e.ToString());
fas.Status = "Error";
while (bw.IsBusy)
{
;
}
bw.RunWorkerAsync();
MessageBoxResult result = MessageBox.Show("There was a problem with " + cup.FileName + "transfer");
}
finally
{
fas.Status = "Completed";
while (bw.IsBusy)
{
;
}
bw.RunWorkerAsync();
ns.Close();
if (fileStream != null)
{
fileStream.Dispose();
fileStream.Close();
}
}
}