Already i built chatting application in(Android, iOS & windows phone) & established in asp.net WebAPI, Now performance is very poor.
After googling i found, XMPP is the best & free(I am planning to use free open source tool, don't suggest paid lib)
Instead of XMPP, why we can't try with signalR?
Suggest me, which one should I go & start establishing the API.
I know compared to SignalR, XMPP have lot of features.