Read varying data length

[JackH685]

I am looking to use a TCP connection but I have been unable to successfully reproduce a 'bytes at port' reader for the TCP line before a Read function. 

[altenbach]

Conventionally, the sender send 4 bytes first, indicating the size of the following message. Else just keep reading and parse as needed.

Do you have control over the sender code?

[JackH685]

I know that the data i am reading comes in the format * 0,0,0,0 (minimum length) or * -10000,-10000,-10000,-10000 (maximum length)

[crossrulz]

Does the message end with a Carriage Return and/or a Line Feed?  If it ends with the CR LF, you can set the TCP Read to use CRLF mode and it will then read up to that byte combination.