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»Forums Index »IQFeed Developer »IQFeed Developer Support »What does this error mean?
Author Topic: What does this error mean? (4 messages, Page 1 of 1)

bards
-Interested User-
Posts: 32
Joined: May 7, 2011


Posted: Oct 3, 2019 11:24 PM          Msg. 1 of 4
Hi,

I have a program that runs daily, and gathers Level1 Data.
What is happening is that the program encounters
errors and then shuts down prematurely.

(I turned on Logging to see what is going on).
This is the last bit of the file:

TO CLIENT L1Error 768 1 2019-10-03 19:00:00 Encountered WSAEWOULDBLOCK while sending to client java.exe. Queuing 44646737 bytes. First 6
4 bytes of data Q,MSFT1918V137,3.10,264,2.98,19,18,15:59:07.464559,2.94,12,88,15
STATUS Information 768 1 2019-10-03 19:00:00 LEVEL1 SOCKET CLOSED - java.exe
STATUS Information 768 0 2019-10-03 19:00:00 LAST CLIENT DISCONNECTED. SHUTTING DOWN IN 5 SEC.
...
STATUS Information 768 0 2019-10-03 19:00:05 Ping Results: Round Trip Time: 22ms
STATUS Connectivity 2288 0 2019-10-03 19:00:05 Authorizations Thread shutting down (156384765) - Context was terminated
STATUS Information 768 0 2019-10-03 19:00:05 IQConnect Exit

What is going on? And how can I avoid this error?

Thanks for any help.

DTN_Gary_Stephen
-Interested User-
Posts: 52
Joined: Jul 3, 2019


Posted: Oct 7, 2019 03:44 PM          Msg. 2 of 4
I will review this log and let you know my findings. We may want to get a more complete log from you as well.

Sincerely,
Gary Stephen
DTN IQFeed Implementation Support Specialist

DTN_Gary_Stephen
-Interested User-
Posts: 52
Joined: Jul 3, 2019


Posted: Oct 10, 2019 08:49 AM          Msg. 3 of 4
WSAEWOULDBLOCK is a windows socket error code. It means that IQConnect tried to send data to your application, but there was no space left on the socket buffer to receive it. When this happens, IQFeed queues any further data until that data can be delivered, or the app disconnects. The next two lines indicate that this happened (the socket closed and the app disconnected). The remaining lines describe IQConnect/IQFeed shutting down. This is all normal behavior.

So the underlying problem is that the socket buffer is filling, meaning that data is coming in faster than the program is processing it.

Sincerely,
Gary Stephen
DTN IQFeed Implementation Support Specialist

bards
-Interested User-
Posts: 32
Joined: May 7, 2011


Posted: Oct 10, 2019 09:09 AM          Msg. 4 of 4
Thanks Gary for inspecting the log file, and determining
the cause of the error. I will have to rewrite
the program to prevent that.

Thanks again for your response.
bards
 

 

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