private void ConnectCallback(IAsyncResult ar)
{
try
{
state = new ClientSocketObject {
fd = (Socket)ar.AsyncState
};
state.fd.EndConnect(ar);
form1.SetStatusLabelDelegate("Connected to server!");
while (true)
{
if (state.fd.Poll(-1, SelectMode.SelectRead))
{
StartReceiving();
}
}
}
catch (Exception exc)
{
MessageBox.Show("6. Exception:\t\n" + exc.Message.ToString());
form1.SetStatusLabelDelegate("Check \"Server Info\" and try again!");
form1.SetButtonDelegate(true);
}
}
public void ReceiveCallback(IAsyncResult ar)
{
try
{
ClientSocketObject state = (ClientSocketObject)ar.AsyncState;
int size = state.fd.EndReceive(ar);
state.stringBuilder.Append(Encoding.ASCII.GetString(state.buffer, 0, size));
//Console.WriteLine(Encoding.ASCII.GetString(state.buffer, 0, size));
if (!state.stringBuilder.ToString().Contains("<<<!EOF!>>>"))
{
state.fd.BeginReceive(state.buffer, 0, ClientSocketObject.BUF_SIZE, 0, new AsyncCallback(ReceiveCallback), state);
}
else
{
form1.SetStatusLabel("Done.");
form1.SetButtonDelegate(true);
String filesString = state.stringBuilder.ToString();
Char action = filesString[0];
filesString = filesString.Remove(filesString.IndexOf("<<<!EOF!>>>", 0)); // remove EOF character sequence
filesString = filesString.Remove(0, 2); // remove action character
if (action == 'f')
{
form2 = new Form2(filesString, form1, conn);
form1.OpenNextFormDelegate(filesString, form2);
}
else if (action == 'F')
{
form2.UpdateFilesListDelegate(filesString);
}
else if (action == 'o')
{
int index = Int32.Parse(filesString.Substring(0, filesString.IndexOf('#')));
filesString = filesString.Remove(0, filesString.IndexOf('#') + 1);
form3 = new Form3(filesString, form2, conn, index);
form2.OpenNextFormDelegate(filesString, form3);
}
else if (action == 'u')
{
filesString = filesString.Remove(0, filesString.IndexOf('#') + 1);
form3.UpdateFileContentDelegate(filesString);
}
state.stringBuilder = state.stringBuilder.Remove(0, state.stringBuilder.Length);
Array.Clear(state.buffer, 0, state.buffer.Length);
}
}
catch (Exception exc)
{
MessageBox.Show("8. Exception:\t\n" + exc.Message.ToString());
form1.SetStatusLabelDelegate("Check \"Server Info\" and try again!");
form1.SetButtonDelegate(true);
}
}