Tcip/ip is a transport layer. It is a way for the client to shovel data bits into a pipe and for the server to read those bits. This lower level protocol ensures that the bits that I send is what you get.

The next level higher is like: how many bits from you constitutes "one thing"? Maybe a fixed 256 bytes constitutes one "message". Maybe some string of characters which end in "\n" constitutes one "message". Maybe some number of lines that end in "\n" and a null line "\n" after all of the relevant lines constitutes collectively one "message". This is part of how the client "talks" to the server.

This is client<->server message protocol specific. Perl is great at "\n" terminated messages! I print one line to you and then I receive one line back. Perl can also deal with fixed byte length message packets.

Anyway all of this is related to the application I/F between client and server.

In reply to Re^3: How to build a tcp session with a remote server? by Marshall
in thread How to build a tcp session with a remote server? by wildnature

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