Hello, I've come across something strange. ?When using openssl s_client and trying to send B (uppercase only) as the first character on any line it causes a heartbeat to be sent. ?Is this a bug or a feature? ?Any way to escape it to send the uppercase B without sending the heartbeat? ThanksRob Sorry for the resend. ?Last one got sent before email was complete. openssl s_client -connect?www.google.com:443 ... BHEARTBEATING140736923497480:error:1413B16D:SSL routines:tls1_heartbeat:peer does not accept heartbeats:t1_lib.c:3974: or? openssl s_client -connect?www.google.com:443 ... BYEHEARTBEATING140736923497480:error:1413B16D:SSL routines:tls1_heartbeat:peer does not accept heartbeats:t1_lib.c:3974: -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20161016/8bd136b1/attachment.html>