Utf 8 - Text Communication Between Applications With TCP Sockets?

I've got a problem to make two applications to send text-data between themselves.
The message is transmited without any problems, the awnser is received too. But, there is a lot of a "New line" char in the end of the string send/received on each side. I guess it's because of i'm readeing the full buffer; i've tried to remove all Chr(10) and Chr(13); I also tried to trim the string, but it didn't worked.

Here the code I use :

Client Side :
Dim cl As New TcpClient
cl.Connect("127.0.0.1", 2000)
Dim str As NetworkStream = cl.GetStream

[Code]....

UTF8 works on 4 bytes, and when I read the stream and I put it into a buffer, if there is no char, the 4 bytes stay on a 0 value.