receive data without stream connection

rperseguini

Hello, we have implemented lightstreamer on our server and now our C++ application receives realtime data from LS via http streaming.

We have some scenarios where keep-alive connections are not allowed (corporate & firewall policies, among others) and so we must have a "pooling mode", that might work like this:

1. create a session, without keeping connection alive (no stream)
2. subscribe some stocks to receive data
3. make a request (once a second, for instance) to get available data

So, is there any approach to get things working this way ?

Alessandro.Carioni

Hello,

Lightstreamer server specifically supports the so called long-polling mode for use-cases like yours. In this mode the connection is released as soon as the real-time notifications are sent.
You can find more information on the guide Generic Clients: Network Protocol (TLCP) Specification in Docs page of Lightstreamer web site.
Especially read the sections:
- Session Life Cycle (p. 6)
- the syntax of the client-server protocol (chapter 3, p. 22)
- the discussion about parameters LS_polling, LS_polling_millis and LS_idle_millis in Session Binding Request (p. 24)
- the Hands On examples (chapter 6, p. 64)

rperseguini

I'd make this way, after reading the docs and it's working very well.

Thanks.