Basically my implementation already works. I have made my own "custom" PSKTlsServer class and handshake works well.
However, I did notice that my ServerHello message does not contain a session ID and the session ID length is also 00.
Looking at the source code, a comment block says: "The server may return an empty session_id to indicate that the session will not be cached and therefore cannot be resumed"
Note: I am using the BouncyCastle API.
Expected Results:
16 03 03 00 55 02 00 00 4D 03 03 5C 49 DE 78 70 07 89
8D 0A 97 31 D3 41 50 2B 90 8F 9E 3F 0A 15 46 56
9D 73 7E 12 6F 5C B1 C8 15 20 EE 4B A6 F2 01 C3
C1 44 23 78 6E B6 9B 6E DA 0E 50 39 CF CD 5C 08
FA E9 ED 7C AF D0 01 8B FD E3 00 8C 00 00 05 00
01 00 01 01 0E 00 00 00 37 01 00
Actual Results:
16 03 03 00 31 02 00 00 2D 03 03 07 C3 AE 45 DD F4 26
6C 47 B4 B6 A5 E1 AB DC BD B5 18 B8 BD 76 84 98
9E 7D 18 D7 10 FB 45 4D 3C 00 00 8C 00 00 05 00
01 00 01 01 37 01 00
Actual results are noticeably shorter since session ID is missing.