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)




"DTN feed was the only feed that consistently matched Bloomberg feed for BID/ASK data verification work these past years......DTN feed is a must for my supply & demand based trading using Cumulative Delta" - Comment from Public Forum Post
"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 am a hedge fund manager here. It’s funny, I have a Bloomberg terminal and a Bridge feed, but I still like having my DTN feed!" - Comment from Feras
"Awesome response, as usual. It is a sincere and refreshing pleasure to do business with DTN, compared to your competition." - Comment from Ryan
"For anyone considering using DTN.IQ for a data feed, my experience with the quality of data and the tech support has been very positive." - Comment from Public Forum
"This beats the pants off CQG, I am definitely switching to the ProphetX 3.0!" - Comment from Stephen
"Boy, probably spent a thousand hours trying to get ******* API to work right. And now two hours to have something running with IQFeed. Hmmm, guess I was pretty stupid to fight rather than switch all this time. And have gotten more customer service from you guys already than total from them… in five years." - Comment from Jim
"IQ feed is brilliant. The support is mind-bending. What service!" - Comment from Public Forum Post
"Thanks for all of your help. Great customer service deserves to be recognized which one the reasons I've been a customer of DTN for over 10 years!" - Comment from Stuart
"Just a thank you for the very helpful and prompt assistance and services. You provided me with noticeably superior service in my setup compared to a couple of other options I had looked at." - Comment from John
Home  Search  Register  Login  Blogs 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 »History LookupError
Author Topic: History LookupError (3 messages, Page 1 of 1)

opttrade
-Interested User-
Posts: 23
Joined: Nov 7, 2016


Posted: Nov 13, 2018 08:16 AM          Msg. 1 of 3
Hi,
everyday I'm requesting historical minute data for the last trading day for about 3000 stocks and everyday I get somtimes connection errors for some symbols in the middle of the task. When I re-run the task then there are other symbols affected.

The logfile shows an error connecting the history socket

STATUS LookupError 3220 21 2018-11-13 12:17:19 History Connect Error SendIntervalRequest (66.112.156.215:60050). Error:10060.
TO CLIENT LookupError 3220 21 2018-11-13 12:17:19 REQ_HST_INT25,E,Could not connect to History socket.,


As I've no glue how the client internally is communicating with the Servers but it seem's the IQFeedClient having troubles sending the request. The socket connection from my app to the iqClient is still alive and not broken.
The errors (about 10-30 symbols out of 3000) appears never in a row - they are absolutly randomly.

I'm using IQFeed Version 6.0.0.5

Any ideas?

br
Erich

DTN_Steve_S
-DTN Guru-
Posts: 2080
Joined: Nov 21, 2005


Posted: Nov 13, 2018 11:02 AM          Msg. 2 of 3
Socket error 10060 is a timeout error on the connection from your machine to our servers.

Each request you make to the feed is handled in it's own connection to the server (Create -> Connect -> Request -> Receive -> Close).

As a result, if you're spinning through 3000 stocks, that is 3000 different socket connections to the server over the course of however long it takes you to make those requests.

We have investigated these sorts of reports a few different times over the years and we've never been able to replicate this reliably or identify a specific cause (all of our tests from both internal and external to our network have not been able to replicate).

If it's something that just recently started, you might try resetting your router/modem (most non-enterprise class hardware will occasionally hiccup under heavy connection load). Of course we are happy to help troubleshoot this with you but most of the time, since a simple re-request usually succeeds, most developers choose to simply implement that (as you have) and not worry about it anymore unless the problem gets worse.

opttrade
-Interested User-
Posts: 23
Joined: Nov 7, 2016


Posted: Nov 13, 2018 12:04 PM          Msg. 3 of 3
Hi Steve,
thanks for prompt reply.
The problem seems to exist for a longer time, but we started just now to analyze the logs...
As we use business connection and enterprise equipment for routing and firewall (Cisco) I personally would exclude problems with it. Maybe the line is to Long between Europe and US
So the simpliest way will be to requery that symbols.

Many thanks and br

Erich
 

 

Time: Mon March 18, 2019 8:54 AM CFBB v1.2.0 15 ms.
© AderSoftware 2002-2003