Exchange Stream API Release - 19th Nov 2019 - SUB_IMAGE change

[BetfairDeveloperProgram]

Thanks LiamP!!

Neil

[LiamP]

No issues for betfairlightweight, it just replaces the cache with the new image, see attached for an example market with a sub image in the middle that others may find useful.

[LiamP]

Excellent, thanks Neil.

[LetsGo]

Good sense and sound judgement in practical matters as always from the BDP team.

[BetfairDeveloperProgram]

The above release has now been delayed until the 19th November and new testing times have been added from Monday - Friday next week.

Kind Regards

Neil

[BetfairDeveloperProgram]

Morning Liam.

Yes, can add an additional test period on on Monday moring at 10am. I'll update the schedule accordingly.

I'll know whether or not the release on Tuesday will go ahead as planned before the of the day and will provide an update regarding this then,

Kind Regards

Neil

[LiamP]

Today's test on the stream-api-integration.betfair.com endpoint worked for some connections but the image executor got overloaded and had to disconnect the remaining ones.

We are preparing a fix for the next test which will now take place on Friday at 10:00 GMT.

Kind Regards

Neil

Hi Neil,

I am not going to be available on Friday, is it possible to add a test next week as well? Seem to be cutting it very fine with it being released on Tuesday, will this be pushed back due to today’s problems?

[BetfairDeveloperProgram]

Today's test on the stream-api-integration.betfair.com endpoint worked for some connections but the image executor got overloaded and had to disconnect the remaining ones.

We are preparing a fix for the next test which will now take place on Friday at 10:00 GMT.

Kind Regards

Neil

[WTPooh]

It looks like no changes are needed for the sample C# client.
Here is how it works now:
MarketCache.cs

public void OnMarketChange(ChangeMessage<MarketChange> changeMessage)
{
if (changeMessage.IsStartOfNewSubscription)
{
//clear cache
_markets.Clear();
}
//...
}

ChangeMessage.cs

public bool IsStartOfNewSubscription
{
get
{
return ChangeType == ChangeType.SUB_IMAGE &&
(SegmentType == SegmentType.NONE || SegmentType == SegmentType.SEG_START);
}
}

[bfexplorer]

Do you really simulate this new behaviour because I just switched to stream-api-integration.betfair.com, and I did not notice SUB_IMAGE.

I have done test on my desktop app, and as well prepared simple code for testing, so the question is how we should write our unit test code for this new feature?

Well yes, all seems to be working as before for me.

Here is video from my test:

https://youtu.be/oNnA1NI_Xps

[LiamP]

Anyone have a connection that got data? Mine failed...

betfairlightweight.exceptions.ListenerError: 
connection_id: 100-061119095447-34, 
data: {"op":"status","statusCode":"FAILURE","errorCode":"UNEXPECTED_ERROR","errorMessage":"Unable to provide initial image due to capacity limitations, please try again","connectionClosed":true,"connectionId":"100-0611134395937-3434"}

[LetsGo]

Hi Neil,

What are the consequence of not making this change to my code?
For example, will I be unsubscribed to the market or just lose a streaming market change?

Thanks

[geoffw123]

Hi Neil

Presumbably this change means a code change is required in your Streaming example code ? If so can you confirm if and when you will be updating the github client example code ?

Thanks

Geoff

[BetfairDeveloperProgram]

Hi LiamP.

i've now added details of when and how this can be tested in the announcement above.

Thanks

Neil

[BetfairDeveloperProgram]

Hi LiamP

Yes, we'll add this capability and will let you know as soon as this is available.

Kind Regards

Neil