I'm confused by your use of 'real-time' in this context. Are you using Lispwork's realtime implementation? Are you running under an RTOS? _______________________________________________ Lisp Hug - the mailing list for LispWorks users lisp-hug@lispworks.com http://www.lispworks.com/support/lisp-hug.html
Hi Miller, Thank you for your reply. ‘real-time’ in this context is real-time updating content for client. Actually, I am building a financial application, and quote updates ideally need to be in real-time not polling basis. Yoshi On 5 Nov, 2013, at 5:27 am, Miller, Bradford W (GE Global Research) <millerb@ge.com> wrote: > I'm confused by your use of 'real-time' in this context. Are you using Lispwork's realtime implementation? Are you running under an RTOS? _______________________________________________ Lisp Hug - the mailing list for LispWorks users lisp-hug@lispworks.com http://www.lispworks.com/support/lisp-hug.html
Yoshiharu Iguchi <minisoba@gmail.com> writes: > Hi Miller, > > Thank you for your reply. ‘real-time’ in this context is real-time > updating content for client. Actually, I am building a financial > application, and quote updates ideally need to be in real-time not > polling basis. I've written (and am actively maintaining) PrimeTrader (see http://www.lispworks.com/success-stories/netfonds-primetrader.html) which uses polling over http, but with an in-house special-purpose http server which responds by feeding quotes over HTTP. Per default, it feeds for 4 minutes before finishing the http request, and the client then polls again. The only slight problem with this approach occurs with today's intrusive "man in the middle" personal firewall and virus software which has a habit of caching whole http requests (and then timing out because of the long duration!), but most such software (e.g. Microsoft's own) is well behaved. For those that can't avoid the intrusive software or are on expensive (e.g. mobile) networks, I've included an option to do regular polling with a chosen frequency. -- (espen) _______________________________________________ Lisp Hug - the mailing list for LispWorks users lisp-hug@lispworks.com http://www.lispworks.com/support/lisp-hug.html