The Goto method to fetch a frame from the server returns None

I am creating a python application which requests for frames from the server via soap requests. This is my xml request

<?xml version="1.0" encoding="utf-8"?>1goto1548052874000no\\r\\n\\r\\n'

But i get None in response. But when i use the live method i get the frames

<?xml version="1.0" encoding="utf-8"?>1liveno\\r\\n\\r\\n'

Please try the TCP Video Viewer sample. Do you see the same issue? If not, try to see what is done differently.

This reminds me, there is a new improved version of the sample.. http://download.milestonesys.com/MIPSDK/Samples/protocol_MIPSDK2019R1_BetaSamples.zip