Kyley,
No program design yet. Questions:
1) Inside the thread - do I have to implement a timer event to periodically
check the buffer (since there's no "data received" event)?
2) What properties do I read to determine if there's received data available?
3) Do I need to use another Indy component in conjunction with the TCPClient
for the buffering etc?
Paul,
I'll take a look at that site. Are you using ICS extensively?
Thanks,
Eric
Date: Thu, 4 Dec 2008 09:21:03 +1300From: [EMAIL PROTECTED]: [EMAIL PROTECTED]:
Re: [DUG] Indy Sockets - How to Receive AsynchronouslyIndy is blocking, so
typically on the client side, you would create a waiting thread that you sit
the TCPClient inside and loop a readtimeout until the resultbuffer has some
data. At that point produce a local event so that your main thread can grab the
TCPClient and read the information.
without knowing your actual program design and how your TCP layer interacts
with your main application its hard to offer any detailed advise, sorry.
On Thu, Dec 4, 2008 at 9:14 AM, Paul <[EMAIL PROTECTED]> wrote:
Indy works blocking only
Use ICS instead, they work blocking or non blocking.
check www.overbyte.be
Paul
----- Original Message -----
From: Eric A
To: Delphi UsersGroup
Sent: Wednesday, December 03, 2008 8:55 PM
Subject: [DUG] Indy Sockets - How to Receive Asynchronously
I have a situation where I need to communicate with a communications server
using Indy TCP sockets. After sending the command the server returns an "OK"
response with a second or two to acknowledge the acceptance of the command,
however the reponse from the end device (returned via the server) may take
several minutes to eventuate (or a else the sever returns a timeout message).
I need to be able to buffer the responses, be aware of when new strings
arrinve, and carry on with other tasks. This threading aspect shouldn't be an
issue as I understand that Indy is naturally multitrheaded by design. I'm not
familiar with using the Indy sockets and since there's no "received data event"
(due to the nature of the design) I'm wondering how I capture the asynchronous
responses sensibly? Does anyone have some code to show me how to use the Indy
10 TCPClient component in this way (for the receive part) ? Its probably
pretty simple but I need to get my head around it quickly. Thanks Eric
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