///<summary>Called when we send TYPE command.</summary>
///<param name="ar">The result of the asynchronous operation.</param>
private void OnPasvConnected(IAsyncResult ar)
{
try
{
DestinationSocket.EndConnect(ar);
string rq = "TYPE I\r\n";
DestinationFtpSocket.BeginSend(Encoding.ASCII.GetBytes(rq), 0, rq.Length, SocketFlags.None, new AsyncCallback(this.OnTypeQuerySent), DestinationFtpSocket);
}
catch
{
Dispose();
}
}
///<summary>Called when we received the REST response.</summary>
///<param name="ar">The result of the asynchronous operation.</param>
private void OnRestQuerySent(IAsyncResult ar)
{
try
{
if (DestinationFtpSocket.EndSend(ar) == -1)
{
Dispose();
return;
}
DestinationFtpSocket.BeginReceive(Buffer, 0, Buffer.Length, SocketFlags.None, new AsyncCallback(this.OnRestQueryRecv), DestinationFtpSocket);
}
catch
{
Dispose();
}
}
///<summary>Called when we begin receive the data.</summary>
///<param name="ar">The result of the asynchronous operation.</param>
private void OnFtpQuerySent(IAsyncResult ar)
{
try
{
if (DestinationFtpSocket.EndSend(ar) == -1)
{
Dispose();
return;
}
StartRelay();
}
catch
{
Dispose();
}
}
///<summary>Called when we send the REST command.</summary>
///<param name="ar">The result of the asynchronous operation.</param>
private void OnTypeQueryRecv(IAsyncResult ar)
{
try
{
int ret = DestinationFtpSocket.EndReceive(ar);
if (ret == -1)
{
Dispose();
return;
}
string rq = "REST 0\r\n";
DestinationFtpSocket.BeginSend(Encoding.ASCII.GetBytes(rq), 0, rq.Length, SocketFlags.None, new AsyncCallback(this.OnRestQuerySent), DestinationFtpSocket);
}
catch
{
Dispose();
}
}
///<summary>Called when we receive the download port.</summary>
///<param name="ar">The result of the asynchronous operation.</param>
private void OnFtpPasvQueryRecv(IAsyncResult ar)
{
try
{
int ret = DestinationFtpSocket.EndReceive(ar);
if (ret == -1)
{
Dispose();
return;
}
IPEndPoint ConnectTo = ParsePasvIP(Encoding.ASCII.GetString(Buffer, 0, ret));
DestinationSocket = new Socket(ConnectTo.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
DestinationSocket.BeginConnect(ConnectTo, new AsyncCallback(this.OnPasvConnected), DestinationSocket);
}
catch
{
Dispose();
}
}
