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"IQ feed works very well, does not have all of the normal interruptions I have grown used to on *******" - Comment from Mark
"I had always used ******* but for the past 2 weeks have been trying DTN IQFeed. Customer support has been extraordinary. They call just to make sure your problem hasn't recurred." - Comment from Public Forum
"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
"I have been using IQFeed now for a few years in MultiCharts and I have zero complaints. Very, very rare to have any data hiccups or anything at all go wrong." - Comment from Public Forum
"You have an excellent product !!!!!!" - Comment from Arely
"DTN has never given me problems. It is incredibly stable. In fact I've occasionally lost the data feed from Interactive Brokers, but still been able to trade because I'm getting good data from DTN." - Comment from Leighton
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"After all the anxiety I had with my previous data provider it is a relief not to have to worry about data speed and integrity." - Comment from Eamonn
"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
"Just a quick one to say I'm very impressed so far :) The documentation for developers is excellent and I've quickly managed to get an app written to do historical downloads. The system is very robust and pretty quick considering the extent of data that's available. The support guys have been very helpful too, in combination with the forums it's been plain sailing so far!" - Comment from Adam
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Viewing User Profile for: alexfe
About Contact
Joined: May 24, 2022 02:02 PM
Last Post: May 24, 2022 03:06 PM
Last Visit: May 24, 2022 03:06 PM
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Location: Brooklyn, New York
Occupation: Senior Software Developer
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Email: alex.feldman@cutlergrouplp.com
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Post Statistics
alexfe has contributed to 2 posts out of 21191 total posts (0.01%) in 713 days (0.00 posts per day).

20 Most recent posts:
IQFeed API Questions » HTTP 1.1/ 400 Bad request response upon request May 24, 2022 03:06 PM (Total replies: 3)

Yair, thank you! that was it! logitech mouse driver!

IQFeed API Questions » HTTP 1.1/ 400 Bad request response upon request May 24, 2022 02:10 PM (Total replies: 3)

I am supporting application using iqfeed, establishing 3 socket connections: Admin, Level1, Lookup.
It works on most of the workstations. However for the one specific workstation I am receiving the following bad request response on Lookup socket:

Normal:
-> S,SET PROTOCOL,5.2
<- S,CURRENT PROTOCOL,5.2

Exception:
-> S,SET PROTOCOL,5.2
<- HTTP/1.1 400
Server: WebSocket++/0.8.2

Actual software installed 6.1.0.20
Any ideas how should I troubleshot this issue?

fwiw, on that specific workstation IQFeed own sample application doesn't show Option Chains.
Thank you.


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