Truncated messages

[aditya-achmad]

Hello, Sometimes I receive truncated message. {"position":{"latitude":0.0,"longitude":0.0,"altitude":0.0},"device":{"id":1,"name":"1111","phone":nu It supposed to be like this: {"position":{"latitude":0.0,"longitude":0.0,"altitude":0.0},"device":{"id":1,"name":"1111","phone":null}}

And sometimes I receive message with extra string too. {"position":{"latitude":0.0,"longitude":0.0,"altitude":0.0},"device":{"id":1,"name":"1111","phone":null}}1111","phone":null}}

How to solve this issue?