Requesting data from PIXHAWK with ardupilot

Im working in an APP made in python, these app need some information about an ardupilot drone, like:
the mission loaded, and the mission progress of the drone.
My GroundStation is QGC. I have a pytohn script that allow me to get the mission progress accesing the forwarded telemetry given by qgound.
The problem is that i can´t send messages through that port, so i can´t access data that qgroundcontrol does not redirect to the port.
If i want to send a request to the dron i have no response at all.


This is my script, the localhost:14550 is the port where the telemetry is redirected.

When i made a request an wait a response i have no response at all.
Any ideas of how to solve this problem?