efer-ms

for reference: ` openssl s_client -dtls -cert ecc_cert.crt -key ecc_private.key -connect 127.0.0.1:30000 -mtu 1200 -use_srtp SRTP_AEAD_AES_128_GCM` will complete the handshake. Here is the log from the test server: [test_str0m_dtls_server.log](https://github.com/user-attachments/files/23555809/test_str0m_dtls_server.log) The...

It looks line `-o` on tstclnt did the trick. So with the patched code `./tstclnt.exe -h 127.0.0.1 -P client -p 30000 -I P256,P384 -D -o` .. completes the DTLS handshake,...

@Frosne , it looks like the original issue regarding the Cookie is resolved However, it now appears that the client hello is fragmented. I think SChannel has issues with that....

Confirmed with the Schannel team that they have a bug regarding fragmented client hellos and are wokring on a fix. @algesten , I think we should close out this issue...