Timeout @ APNS Sandbox URL

I can connect via terminal but when i send request i get
  • Connection state changed (MAX_CONCURRENT_STREAMS == 1)!

  • We are completely uploaded and fine

  • TLSv1.2 (IN), TLS alert, close notify (256):

  • Empty reply from server

  • Connection #0 to host api.sandbox.push.apple.com left intact

curl: (52) Empty reply from server

and it times out.

i can connect openssl s_client -connect api.sandbox.push.apple.com:2197
CONNECTED(00000006) but it randomly stopped working I am using a valid JWT token.