Hi
all.
I think I have
worked myself into a corner and I am missing an obvious answer here that I cant
see because I am thinking about it too much...if you know what I
mean.
Heres the senario
:-
I have an
application that is connected to a comport. (the server)
I then have another
application that needs to output the data to a comport...the same comport (the
client).
This situation has
come about after the intial design of the "server" app....its not really a
server but the analogy fits.
The "client" needs
to pass some info to the "server" because its connected to the comport, and 2
apps. cant share the same comport.
So, I have tired
using TCP/IP with INDY controls to pass data to the "server", and that works
fine, BUT then the server needs to pass back data to the client, i.e. the data
back form the comport is parsed and a result generated, which is then passed
back to the client.
The problem here is,
this might take a few seconds, and in that time, maybe another request has been
sent to the server to do something else, and because INDY uses threads you loose
the reference to the first thread that data was received on, so you cant pass
data back on that thread...etc.
So, I used
MailSlots, and I did have to deal with a message being sent to every installed
network protocal, but thats ok, it sometimes was a wee bit unreliable, or would
hand the server app. when it tried to close....for what ever
reason.
This app. would be
installed on win98 machines and up, and both client and server are on the same
machine.
So, why not make teh
client and server ONE app? because the server is pretty much only got a very
simple interface and is really only designed for logging some data, and I was
trying to keep the 2 apps. seperate.
So, I hope this is
enough info for someone to either say...hey persist with "this" line of
development, or hey, try "this" line of development.
Like I say, I think
I have got to that point where i cant think about it clearly anymore because I
am getting a bit too anxious about it.
Any help
appreciated.
Cheers,
Jeremy
Coulter
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