Hi @pj.chan,
There is no specific documentation around this request and the parameters, however, I did refer to the EMA documentation around sending a directory request and determined that the domain is 'Source' and that I needed to apply a 'Filter'. Section 27.2 of the WebSocket Protocol Spec outlines the parameters of a request.
Is it possible to request a list of available services from ADS in an RDTS (TREP) using web socke...
pj.chan
Explorer
...ts API?
I'm developing an application to post to RCRT over RDTS (TREP) using web sockets API. Although I know that I can ask the TREP administrator for details of what services are available, I'd like to do it via program. if not this, is there other info I can request that is NOT a market data instrument request? In other words, I'd like to request something from ADS or RCRT (Contex) (status? version? other attributes?) to verify the connection, not actual instrument data.
0
Best Answer
-
Hi @pj.chan,
You can issue the following request:
{
"Key": {
"Filter": 1
},
"ID": 2,
"Streaming": true,
"Domain": "Source"
}The "Filter" value is a mask that provides different levels of details:
- 1 (SERVICE_INFO_FILTER) - info that identifies a service
- 2 (SERVICE_STATE_FILTER) - info about the current state of a service
- 4 (SERVICE_GROUP_FILTER) - item group status and item group merge info
- 8 (SERVICE_LOAD_FILTER) - info about the service workload
- 24 (SERVICE_DATA_FILTER) - info that should be applied to all items associated
- 32 (SERVICE_LINK_FILTER) - info about the upstream sources
, which will provide more details in the response,
0
Answers
-
Great @nick.zincone, thanks for that! I'll give it a go. Is that documented somewhere?
0 -
Hi @pj.chan,
There is no specific documentation around this request and the parameters, however, I did refer to the EMA documentation around sending a directory request and determined that the domain is 'Source' and that I needed to apply a 'Filter'. Section 27.2 of the WebSocket Protocol Spec outlines the parameters of a request.
0 -
great idea. Thanks
0
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