For any one that may have same issue:
After some test I found out that it was because of ssl certificate. When I changed camera alarm server setting to HTTP it worked as expected. I think default certificate has expired.
Thanks forreplaying,
My main problem right now is that I am not able to get data from byte array, I tried with different encoding but the answer is unreadable on every encoding. because of that ı am not able to read boundary and ....
Thank you