What is the current Lightstreamer server version in use?

[NovoPDNK]

Hi,

 

I'm try to play with new official LIghtstreamer Python client lib and it fails with "Cause: 65 - Unsupported protocol version". My best guess is that's happening because the SDK requires server version 7.2.0, whilst IG has something older. Could you please confirm what's the current server version, and if it's lower than 7.2.0 is there a plan for upgrade?

 

Cheers,

Novo

Edited August 2, 2022 by NovoPDNK

[Arnaud]

It would make the life of many people much easier if the now standard python ligthstreamer library was properly supported....

https://pypi.org/project/lightstreamer-client-lib/

https://sdk.lightstreamer.com/ls-python-client/1.0.1/api/lightstreamer.html#lightstreamer.client.ls_python_client_wrapper.LightstreamerClient.connectionOptions

[Arnaud]

and I can see:

https://xxxx/lightstreamer/create_session.txt?LS_protocol=TLCP-2.4.0

with the error 65 mentioned above too.

[OfentseIG]

Hi @Arnaud

Did you try the link https://labs.ig.com/lightstreamer-downloads

All the best, 

OfentseIG

[Arnaud]

Hi, @OfentseIG, thanks, I did. 

There are some subtilties and the page require a few update on the Python side.

1 st point, now Lightstreamer does support a python library (yeahhh) but... Ig Lightstreamer server does not support it (looks like licensing version issue - time to update?)

2. Then now the python sample in github is actually leveraging the standard python in the main branch. https://github.com/Lightstreamer/Lightstreamer-example-StockList-client-python/blob/master/src/stock_list_demo.py

and so at the moment, this does not work with IG.

3. BUT, We are not out of luck! If you are looking for the python code which enable txt connection to the lightstreamer server, you can still use the old version of the python sample, just reference the actual old branch:

https://github.com/Lightstreamer/Lightstreamer-example-StockList-client-python/releases/tag/v1.1

 

Cheers,

Arnaud

[Shellman]

Any updates here? Anyone knows which version of Lightstreamer IG is currently using, and what their upgrade cycle is like.

I noticed Lightstreamer released a new sdk library (https://github.com/Lightstreamer/Lightstreamer-lib-client-haxe) for connecting to lightstreamer servers version 7.4.0 and above, seeing as they have issues with their older dotnet versions i'm really looking forward to IG upgrading in the future.

Latest version 5.1.8 of the dotnet client i can get connecting to IG, but it suffers from memory leaks upon connection failures.