Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)




"I would just like to say that IQFeed version 4 is running very well and I am very happy with its performance. I would also like to extend a big thanks for the fast and efficient help that I always receive. My questions and concerns are always addressed promptly. Way to go!" - Comment from Josh in CO.
"This beats the pants off CQG, I am definitely switching to the ProphetX 3.0!" - Comment from Stephen
"If you are serious about your trading I would not rely on IB data for serious daytrading. Took me a while to justify the cost of IQ Feed and in the end, it's just a 2 point stop on ES. Better safe than sorry" - Comment from Public Forum
"I ran your IQFeed DDE vs. my broker vs. a level II window for some slow-moving options. I would see the level II quote change, then your feed update instantaneously. My broker's DDE, however, would take as much as 30 seconds to update. I am not chasing milliseconds, but half a minute is unacceptable." - Comment from Rob
"Thanks for the great product and support. During this week of high volume trading, my QuoteTracker + IQ Feed setup never missed a beat. Also, thanks for your swiftness in responding to data issues. I was on ******* for a few years before I made the switch over early this year, and wish I had done it a long time ago." - Comment from Ken
"Everything is working amazing now. I'm already impressed with the true-tick feed of IQFeed and it's ability to support my 480 symbol layout." - Comment from Tyler via Email
"I "bracket trade" all major news releases and I have not found one lag or glitch with DTN.IQ feed. I am very comfortable with their feed under all typical news conditions (Fed releases, employment numbers, etc)." - Comment from Public Forum
"Everything is working great ! Very impressive client. The news refreshes better and is more pertinent than the ******* feed I paid $ 100/month for. I Also like the charts a lot." - Comment from Leon
"Interactive Brokers tick data was inconsistent, so I have switched to using DTN exclusively. It is great to no longer have to worry about my datafeed all day long." - Comment from Philippe
"This is an excellent value, the system is generous (allowing for 500 stocks) and stable (and really is tick-by-tick), and the support is fantastic." - Comment from Shirin via Email
Home  Search  Register  Login  Recent Posts
Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTNMarkets on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
»Forums Index »IQFeed Developer »IQFeed Developer Support »IQFeed client update backwards compatibility
Author Topic: IQFeed client update backwards compatibility (3 messages, Page 1 of 1)

sevteen
-Interested User-
Posts: 4
Joined: Oct 11, 2017
Posted: Oct 24, 2017 10:35 AM          Msg. 1 of 3
Hello,

We're using client version 5.2.5.0 and it's asking to upgrade to 5.2.6.0. We're also using protocol v5.1. Will new IQFeed Client still work for protocol v5.1? In general how does IQFeed Client and protocol versioning relate to each other (if any) and how should we know if there are breaking changes in the release?

DTN_Tim Walter
-DTN Guru-
Posts: 1238
Joined: Apr 25, 2006
Posted: Oct 24, 2017 01:15 PM          Msg. 2 of 3
The upgrades should be seamless as long as the same protocol is used, regardless of upgrading. (Only true for versions 4.9 or greater.) We would alert all registered developers long ahead of any breaking changes multiple times before making a release of such a client.

Tim

sevteen
-Interested User-
Posts: 4
Joined: Oct 11, 2017
Posted: Oct 24, 2017 02:44 PM          Msg. 3 of 3
Hi Tim,

makes sense, just wanted to verify as I could not find it in written form in the docs, maybe I overlooked though.

Anyway, this is great and thanks!
 

 

Time: Mon March 30, 2020 12:41 PM CFBB v1.2.0 31 ms.
© AderSoftware 2002-2003