I have a serious problem with this code. This is how it should work: Client connects to server and choose a file on disk. after that client sends a (byte[] buffer) to the server by this format("File" (4 bytes) + FileNameLength (4 bytes) + FileDataLength (4 bytes)). After that server creates a (byte[] buffer) with this size (new byte[FileNameLength + FileDataLength]).So client sends a data to the server by this format(byte[] buffer = FileName + FileData). And the server gets a file. The problem is here that i have a MessageBox in the Server to see the FileName after receiving that but MessageBox is always blank and it runs times and times and times. what's the solution?
The Server:
private Socket SServer = null;
private Socket SClient = null;
private byte[] buffer = new byte[1024];
private byte[] FileNameLength = null;
private byte[] FileSize = null;
private void Server_Load(object sender, EventArgs e)
{
SServer = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SServer.Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 13000));
SServer.Listen(1);
new Thread(() =>
{
SClient = SServer.Accept();
MessageBox.Show("Connected.");
new Thread(() => Receiver()).Start();
}).Start();
}
private void Receiver()
{
buffer = new byte[1024];
while (true)
{
Int32 AllLength = SClient.Receive(buffer, 0, buffer.Length, SocketFlags.None);
byte[] Devider = new byte[4];
Array.Copy(buffer, 0, Devider, 0, 4);
string Devide = Encoding.ASCII.GetString(Devider);
if (AllLength > 0)
{
if (Devide == "File")
{
FileNameLength = new byte[4];
Array.Copy(buffer, 4, FileNameLength, 0, 4);
FileSize = new byte[4];
Array.Copy(buffer, 8, FileSize, 0, 4);
buffer = null;
buffer = new byte[BitConverter.ToInt32(FileNameLength, 0) + BitConverter.ToInt32(FileSize, 0)];
}
else
{
byte[] FileNameBytes = new byte[BitConverter.ToInt32(FileNameLength, 0)];
Array.Copy(buffer, 0, FileNameBytes, 0, BitConverter.ToInt32(FileNameLength, 0));
byte[] FileBytes = new byte[BitConverter.ToInt32(FileSize, 0)];
Array.Copy(buffer, BitConverter.ToInt32(FileNameLength, 0), FileBytes, 0, BitConverter.ToInt32(FileBytes, 0));
string FileName = Encoding.ASCII.GetString(FileNameBytes);
MessageBox.Show(FileName);
buffer = null;
buffer = new byte[1024];
}
}
}
}
TheClient:
private Socket SClient = null;
string Path, FileName;
private void Client_Load(object sender, EventArgs e)
{
SClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SClient.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 13000));
}
private void BT_SendFile_Click(object sender, EventArgs e)
{
byte[] FileLengthBytes = BitConverter.GetBytes(FileName.Length);
byte[] FileBytes = File.ReadAllBytes(Path + FileName);
byte[] buffer = new byte[FileLengthBytes.Length + FileBytes.Length + 4];
//buffer = Encoding.Unicode.GetBytes("File") + FileLengthBytes + FileBytes;
Array.Copy(Encoding.ASCII.GetBytes("File"), 0, buffer, 0, 4);
Array.Copy(FileLengthBytes, 0, buffer, 4, FileLengthBytes.Length);
Array.Copy(BitConverter.GetBytes(FileBytes.Length), 0, buffer, 8, 4);
SClient.Send(buffer, 0, buffer.Length, SocketFlags.None);
byte[] FileNameBytes = Encoding.ASCII.GetBytes(FileName);
buffer = null;
buffer = new byte[FileNameBytes.Length + FileBytes.Length];
Array.Copy(FileNameBytes, 0, buffer, 0, FileNameBytes.Length);
Array.Copy(FileBytes, 0, buffer, FileNameBytes.Length, FileBytes.Length);
SClient.Send(buffer, 0, buffer.Length, SocketFlags.None);
}
private void BT_Browse_Click(object sender, EventArgs e)
{
OpenFileDialog N = new OpenFileDialog();
if (N.ShowDialog() == DialogResult.OK)
{
TB_Address.Text = N.FileName;
string[] Seperate = N.FileName.Split('\\');
FileName = Seperate[Seperate.Length - 1];
Path = null;
foreach (string str in Seperate)
{
if (str != Seperate[Seperate.Length - 1])
Path += str + "\\";
}
}
}
