Hi Reza,
You get the data handed down to the next observable as a parameter. Also,
there is the .do operator that let you do side-effects.
it would look something like this:
let config;
loadConfig
.do( config => this.config = config) // side effect, do doesn't change
the the observable, it just passes it along
.switchMap( config => $http.get(config.url)
.switchmap( r => {
const addres .= r.toJson().webscocketAddres
return setupWSobservable(addres)
})
.subscribe(msg => handleWsdata(msg))
Typically, you only subscribe once, when you have set up the entire flow.
Regards
Sander
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