Binary formatter issues with Sockets
hi i have a class which i wish to send over a network using .net sockets.
these are 2 separate proj in one solution, i have a Copy of the class file in each proj directory, with the name space changed in each file to match
here is the code in the Sender.
public Boolean SendCMD(StatusCMD toSend)
{
try
{
BinaryFormatter toBinary = new BinaryFormatter();
MemoryStream memStream = new MemoryStream();
toBinary.Serialize(memStream, toSend);
Byte[] byToSend = new Byte[1024];
memStream.ToArray().CopyTo(byToSend, 0);
memStream.Close();
BitConverter.GetBytes(Convert.ToInt16(memStream.ToArray().Length)).CopyTo(byToSend, 1022);
netStream.Flush();
netStream.Write(byToSend, 0, byToSend.Length);
return true;
}
catch
{
return false;
}
}
this works fine, maybe your asking why i haven't just put the stream directly into the BF, but the size of the Class varies coz of strings in it. it manages to send the byte array with the last 2 byte indicate the point where the class stops.
the server
public StatusCMD[] ReciecveCMD()
{//Recives a Status cammand
try
{
List lstCMD = new List();
BinaryFormatter fromBinary = new BinaryFormatter();
MemoryStream memStream = new MemoryStream();
foreach (Socket currentSocket in Clients)
{
if (currentSocket.Available > 0)
{
Byte[] byRecCMD = new Byte[1024];
currentSocket.Receive(byRecCMD);
Byte[] byTemp = new Byte[2];
byTemp[0] = byRecCMD[1022];
byTemp[1] = byRecCMD[1023];
Byte[] byObject = new Byte[BitConverter.ToInt16(byTemp, 0) + 1];
//byRecCMD.CopyTo(byObject,0);
for (int i = 0; i < byObject.Length; i++)
{
byObject[i] = byRecCMD[i];
}
memStream = new MemoryStream();
memStream.Flush();
memStream.Write(byObject, 0, byObject.Length);
memStream.Position = 0;
object k = fromBinary.Deserialize(memStream) ; //it always fails here
lstCMD.Add(k as StatusCMD);
lstCMD[lstCMD.Count - 1].CompID = currentSocket.RemoteEndPoint;
}
}
memStream.Close();
return lstCMD.ToArray();
}
catch(Exception e)
{
MessageBox.Show(e.ToString());
return null;
}
}
it always fails at the BF'ing, and it just says a whole load of stuff about how the BF version my be different.
when i look at the byte array that is going into the memstream it is the same as that which came out, of the senders.
Please Help Me, i am newish to C# and sockets and binary formatting are new to me too.
thank you for any help.
bitmousePosted Feb 19, 2009, 5:32 PM