Multipath TCP enables iOS to use both wifi and data connection simultaneously which increases the user experience and works around common problem network latency,network connection drop out,etc.
It was introduced in iOS 7 itself and it was used by only Siri but it is released for developers.
since iOS 11.
This can be lot more useful when it comes to streaming of audio and video.
One can opt multipath tcp in NSURLSession
var multipathserviceType:URLSessionConfiguration.MultipathServiceType
none =0
handover = 1
interactive=2
None:
It never used multipath acts as usual
Handover:
acts more like how wifi assit works i.e only when wifi is weak it uses data and if wifi signal gets stronger then it uses wifi
Interactive:
It uses both wifi and data at a same time but it will not be very aggressive on data network.
Siri uses interactive mode
Aggregate:
Same as interactive but it'll use data network aggressively
