The wolfssl ssl_helper doesn't seem to work at all. After uncommenting the error messages: $ ./busybox wget https://www.google.com Connecting to www.google.com (216.58.214.4:443) err = -313, revcd alert fatal error SSL_connect failed wget: error getting response: Connection reset by peer Same result for multiple HTTPS servers. Using busybox 1.25.0, my config is defconfig with only CONFIG_FEATURE_WGET_OPENSSL disabled for testing ssl_helper. I've tested wolfssl v3.6.8 and v3.9.8, configured with the options specified with ssl_helper.
Evidently, configure now also needs C_EXTRA_FLAGS="-DWOLFSSL_STATIC_RSA" Fixed in busybox git, see networking/ssl_helper-wolfssl/00cfg-wolfssl-3.9.8 Thanks!