Ja, ich habe die delays rausgenommen.
Hab deinen Code kompiliert
und noch " return lastRequest;" eingefügt (war wohl wieder ein Test) 
Jetzt läuft der Code
14:39:15.569 -> Connecting to WiFi..
14:39:17.292 -> Connecting to WiFi..
14:39:18.273 -> Connecting to WiFi..
14:39:18.273 -> 192.168.178.102
14:39:36.169 -> Requesting temperatures...DONE by: 22723
14:40:24.935 -> Requesting temperatures...DONE by: 71502
14:41:10.988 -> Requesting temperatures...DONE by: 117525
14:41:59.012 -> Requesting temperatures...DONE by: 165549
14:42:45.200 -> Requesting temperatures...DONE by: 211768
14:43:31.160 -> Requesting temperatures...DONE by: 257716
14:44:18.173 -> Requesting temperatures...DONE by: 304731
14:45:05.110 -> Requesting temperatures...DONE by: 351642
14:45:53.612 -> Requesting temperatures...DONE by: 400177
14:46:45.504 -> Requesting temperatures...DONE by: 452062
14:47:30.481 -> Requesting temperatures...DONE by: 497039