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 used to have *******, but they are way more money for the same thing. I have had no probs with data from DTN since switching over." - Comment from Public Forum Post
"If someone needs the best quality data and backfill beyond what their broker provides at a rate that is the best in the industry, I highly recommend IQFeed." - Comment from Josh via Public Forum
"Thanks for following up with me. You guys do a great job in tech support." - Comment from Phelps
"I'm satisfied with IQFeed. It's the most reliable and fastest quote feed I have ever used. Although I'm a resident in China, it's still very fast!" - Comment from Xiaofei
"You are either overstaffed or people just don't have problems with your feed because customer support always answers the phone quickly." - Comment from Jay via Email
"Very impressed with the quality of your feed - ******* is a real donkey in comparison." - Comment from A.C. via Email
"My broker in Davenport suggested I give you a try as he uses your service and says its the best." - Comment from Bill via RT Chat
"There is no doubt that IQFeed is the best data provider. I am very satisfied with your services. And IQFeed is the only one that I would recommend to my friends. Now, most of them are using your product in China." - Comment from Zhezhe
"You have an excellent feed. Very few spikes for Spot Forex." - 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
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: 25
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: 2087
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: 25
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: Fri April 19, 2019 6:04 PM CFBB v1.2.0 16 ms.
© AderSoftware 2002-2003