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"I've been using IQFeed 4 in a multi-threaded situation for the last week or two on 2600 symbols or so with 100 simultaneous daily charts, and I have had 100% responsiveness." - Comment from Scott
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"I just wanted to say how happy I am with your service. I was able to download the API docs last week and I was able to replicate Interactive Brokers historical bar queries and realtime bar queries over the weekend. That was about one of the fastest integrations that I've ever done and it works perfectly!!!!" - Comment from Jason via Email
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"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
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Viewing User Profile for: freemind
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Joined: Jun 27, 2017 06:09 PM
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freemind has contributed to 7 posts out of 21184 total posts (0.03%) in 2,485 days (0.00 posts per day).

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That's strange. I believe your limit is a little bit behind 50 requests per second. I mean it should be less than 50 not equal to 50. My code has been well tested and I'm using high precision timers in order to throttle the output and using 50 triggers the exception. Received confirmation from others that adjusting it a little below fixed the issue.

I'll let you know once I have more info.
Thanks,
Mathieu


My changes with 2.6.0 works well but you need to limit to 8 concurrent clients. For some reasons, passed this limit, even with the throttler in place, I'm getting ErrorMessage: Too many simultaneous history requests., MessageTrace: E,Too many simultaneous history requests.,

Hope this helps.
Mathieu
Edited by freemind on Jan 16, 2021 at 09:38 AM

IQFeed Developer Support » C# sample using sockets? Jun 2, 2018 02:07 PM (Total replies: 8)

Hello @stargrazer,

Please have a look at this project. This library supports IQFeed 5.2. Fully written in C# in a highly efficient way. The code is production ready with unit and integration tests.

Feedbacks are welcome.

https://github.com/mathpaquette/IQFeed.CSharpApiClient

Thank you,
Mathieu

IQFeed Developer Support » Simple C# Example, Anyone? Jun 1, 2018 03:02 PM (Total replies: 4)

Hello squirlhntr,

you could check out my project.... https://github.com/mathpaquette/IQFeed.CSharpApiClient
I handle almost all features from the IQFeed Api in native c# code....

Thank you.


Hey Tim, thanks for your reply.

Since you dont really offer any support yet, is it possible to download archived version of mktsymbols_v2.zip for every week? This way I will be able to build my chains...

Thanks

IQFeed Developer Support » Expired Equity/Index Options Jun 27, 2017 06:13 PM (Total replies: 8)

Any updates regarding this issue?

Thanks,
Mathieu


any updates?

Looking for a solution for this as well.

Thanks,
Mathieu


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