See bug-report: https://core.tcl-lang.org/tcltls/tktview/88c0c84969 --- tls.c 2020-10-12 16:39:22.000000000 -0400 +++ tls.c 2023-11-19 21:44:39.676318000 -0500 @@ -1215,4 +1214,7 @@ SSL_CTX_set_options( ctx, SSL_OP_ALL); /* all SSL bug workarounds */ SSL_CTX_set_options( ctx, off); /* all SSL bug workarounds */ +#ifdef SSL_OP_IGNORE_UNEXPECTED_EOF + SSL_CTX_set_options( ctx, SSL_OP_IGNORE_UNEXPECTED_EOF); +#endif SSL_CTX_sess_set_cache_size( ctx, 128);