Hi Gianluca, thanks for your advises. My name Is Ivanhoe.

Could I give you more information about this;.

I have tried with the second option that you gave me, before that you wrote it. But unfortunately it doesn't stop the connection, when i use
[_my@class unsubscribeItems]; it keeps running. I guess this is my best option for the future, because if i want to show another view i need to stop the connection.

The first point depends of the second, I guess that I made a terrible mistake when we start to program the app, we use a lot of view controllers in just one class which is not a view controller. I mean in my main class we call all of view and present it. this make hard to solve the problem (stop the connection).

the last point, could you give an example about how use maxBandwidth, because i seen it, but i couldn't make it works. i just did this;

[LSConnectionConstraints constraintsWithMaxBandwidth:100.0];


It is probably that you need more information about my class. I really need help with this.
I really appreciate if you lend my a hand, you are too kind!!