A client is sending the server a file.
The server needs to know the name of the file before saving it that was sent.
How can I do this?
Sendnetworkfile/receivenetworkfile
Well, most of the timeOkay, it works I guess

But networks are sometimes tricky and in very rare cases it will happen, that one telegram overhauls the other.
In other words, the SendNetworkFile() could be faster than the SendNetworkString().
Thus, to be on the safe side, the sender must wait for an acknowledge of the filename from the receiver. Afterwards the filetransfer can start.
Let's say the SendNetworkFile() command is a little bit incomplete
