I have very simillar situation, my clients (embedded units connected
through GPRS) expect some sequence of bytes from server after
connecting. Clients are able to send their data after they receive this
starting sequence. I just send sequence of bytes in OnClientConnect
events of server socket - it seems to work fine without any problem.
Lukas
I'm using TWSocketServer to handle multiple incoming connections from
a client's embedded unit.
Unfortunately the remote unit has a few limitations; the main one
being that it can establish
an IP connection to a server but cannot send data until the server
requests it.
This means that although the OnClientConnect function gets called,
the OnDataAvailable does not.
I had put a line of code in the OnClientConnect to trigger the
OnDataAvailable function
but this seems to be blocking other connections.
You should not do that. OnDataAvailable is triggered when the other
side has sent data.
My questions are:-
i) Is there a way to trigger the OnDataAvailable
function by post a message on the socket.
No way. Well, no way that has real meaning.
ii) Is there a better way to do this without going
to a threaded model.
No need to go multithreaded. You said: "cannot send data until the
server requests it". This is the solution: once the embedded unit is
connected send the request it waits. Probably the banner property is
the place where you could place you request because banner is what the
server component sent immediately when a client connect.
BTW and for my information, what kind of unit is this and what kind of
request does it needs ?
--
francois.pie...@overbyte.be
The author of the freeware multi-tier middleware MidWare
The author of the freeware Internet Component Suite (ICS)
http://www.overbyte.be
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