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»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »DTN Data Feed API

Author	Topic: DTN Data Feed API (14 messages, Page 1 of 1)
tradedyn -Interested User- Posts: 3 Joined: Oct 22, 2004	Posted: Oct 26, 2004 01:45 PM Msg. 1 of 14 I would like to use the DTN 1300 symbol data feed in conjunction with a trading app. If I wanted to "suck in" the DTN stream, would I buy the Specifications on the IQ Feed site and develop using those specs? (My understanding is that the DTN datafeed is the same as the IQFeed data feed). Is there any best practices document for integration of the DTN feed with a Java (J2EE) application or SDK for the DTN product?
DTN_Steve_G -DTN IQFeed- Posts: 28 Joined: Oct 1, 2004	Posted: Oct 26, 2004 01:52 PM Msg. 2 of 14 tradedyn, There is not a best practices document for developing IQFeed in J2EE. We do have a Java Example with source code available to see how one would access our APIs through Java. Steve Grunberg IQFeed Developer Support DTN Market Access
DTN_Jay_Froscheiser -VP, Product Operations- Posts: 1746 Joined: May 3, 2004 DTN IQFeed/DTN.IQ/DTN NxCore	Posted: Oct 26, 2004 02:13 PM Msg. 3 of 14 Yes. The IQFeed API is what you need to develop to the DTN.IQ subscription service of 1300 symbols. Jay Froscheiser DTN Market Access, LLC.
tradedyn -Interested User- Posts: 3 Joined: Oct 22, 2004	Posted: Oct 26, 2004 02:35 PM Msg. 4 of 14 Steve, That information is in the specifications I would buy/download in the IQ Feed site, or available somewhere else? Thanks.
DTN_Steve_G -DTN IQFeed- Posts: 28 Joined: Oct 1, 2004	Posted: Oct 26, 2004 02:53 PM Msg. 5 of 14 tradedyn, The IQFeed site provides you several downloadable examples for you to execute and exam source code to see how the APIs are used in several languages. Also, ample technical details about the APIs and their functionality. Lastly, if you have any development questions, we provide three different channels for developer support. Steve Grunberg IQFeed Developer Support DTN Market Access
dhakme -DTN Evangelist- Posts: 150 Joined: Sep 17, 2004	Posted: Oct 26, 2004 08:19 PM Msg. 6 of 14 tradeyn, Unfortunately, unlike some other data feeds, IQFeed/DTN only supply you with the full API documentation and examples after you pay your developers fee. Java is very much the poor cousin to the other programming languages. We are using java with streaming information only (socket connection) and have overcome a few hurdles but it is now basically working. The problems we are still having would be common to all languages. There are very few java examples provided but these don't cover all DLL calls and, unfortunately some of the references to the DLL objects are incorrect. Clearly no-one at IQFeed has actually tested all calls. We examined the DLLs with depends.exe (provided by microsoft) to determine the correct references. I have no experience in retrieving historical data using Java. Hope this helps. Dennis
DTN_Steve_G -DTN IQFeed- Posts: 28 Joined: Oct 1, 2004	Posted: Oct 27, 2004 08:55 AM Msg. 7 of 14 If anyone sees discrepencies between our API documentation and our software (such as the wrong references noted here), please let us know the specifics. Then we can confirm the discrepency and correct it. We want our documentation to be as accurate as possible. Steve Grunberg IQFeed Developer Support DTN Market Access
skunk -DTN Evangelist- Posts: 249 Joined: May 7, 2004	Posted: Oct 27, 2004 01:37 PM Msg. 8 of 14 "If anyone sees discrepencies between our API documentation and our software (such as the wrong references noted here), please let us know the specifics." I reported one in June last year http://www.iqfeed.net/dev/Index.cfm?CFApp=2&Message_ID=1000 It is still wrong in 2.3.0.1
DTN_Steve_G -DTN IQFeed- Posts: 28 Joined: Oct 1, 2004	Posted: Oct 27, 2004 02:16 PM Msg. 9 of 14 skunk, Could you report it to me one last time. I WILL look into it, and correct it (if its found to be a discrepancy). Steve Grunberg IQFeed Developer Support DTN Market Access
skunk -DTN Evangelist- Posts: 249 Joined: May 7, 2004	Posted: Oct 27, 2004 02:23 PM Msg. 10 of 14 public abstract class IQ_32 { ...... public native void CleartAutoLogin(); ...... } no 't' in the dll thus the dll dont work
skunk -DTN Evangelist- Posts: 249 Joined: May 7, 2004	Posted: May 27, 2005 11:28 AM Msg. 11 of 14 Looks like a fix for this slipped through the cracks when 2.3.0.3 was being released.
DTN_Natalie_H -DTN Evangelist- Posts: 175 Joined: May 10, 2004 DTN Market Access, LLC.	Posted: May 27, 2005 03:08 PM Msg. 12 of 14 Hi skunk, I haven't gotten to the documentation yet, but I didn't see that as a reason to delay posting the 2.3.0.3 BETA. I'll get it done. Thanks! Natalie Hannan DTN Market Access, LLC.
skunk -DTN Evangelist- Posts: 249 Joined: May 7, 2004	Posted: May 27, 2005 03:59 PM Msg. 13 of 14 not to mention the recompile of either the dll or the java file
DTN_Natalie_H -DTN Evangelist- Posts: 175 Joined: May 10, 2004 DTN Market Access, LLC.	Posted: May 27, 2005 04:21 PM Msg. 14 of 14 I don't understand what you mean by that. Natalie Hannan DTN Market Access, LLC.