Hello, when I run the./dtls/client_dtls_ipv6.c and server_dtls_ipv6.c programs, an error occurs on the wolfSSL_connect interface with error code -308 and error state on socket. How to deal with it?

[qikailiang]

No description provided.

[kareem-wolfssl]

Hi @qikailiang ,

I was able to reproduce a -308 error when building without --enable-ipv6, after adding this flag I see that the connection is working. You will need to build with: --enable-dtls --enable-dtls13 --enable-ipv6.
I am still seeing a -308 error from the server but it is raised after the connection is complete and the socket is closed. The server outputs Client left cont to idle state after this indicating it is still working fine.

Please confirm your build settings and wolfSSL version (I tested with 5.7.2) and if you continue to run into issues, please generate a debug log by building with --enable-debug, uncommenting the wolfSSL_Debugging_ON() line in the client/server and attach the logs here.