Re: TCP packet - are separate packets collected into one?

[Norman Palardy <npalardy@great-white-software.com>]

On 26-Feb-09, at 1:01 PM, Thomas Tempelmann wrote:

> I've never been clear on this one, and I wonder if someone KNOWS how
> this works with REALbasic's sockets:
>
> If I make two separate Write() calls to a socket, will the receiving
> side receive two Strings when calling ReadAll in a loop, or might it
> get one String containing both packets concatenated?
depending on how big the strings are they might read a part of one  
with each call
or two concatentated together if they are small

> Or is that actually a property of the TCP transport itself, that it
> may choose to collect several small data segments and send them all at
> once?
yes

> Hmm, probably, for optimization reasons.
yes

> Meaning I can see a TCP socket only as a stream transport, not as a
> packet transport as it is with UDP, right?
it's a stream

this is one reason you need some kind of framing in your protocol

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