Hi, thanks for the answer. free Let's don't work 1 years without renew and my service official and works for hospitals. I don't want to use self cert. Ok I will try to update to 8.66. Now I add logger to demo project and now I got all logs. Maybe these lines?
16:25:09:465 AlpnCB> Protocols: h2,http/1.1
16:25:09:465 ProtoMsg: None, State: SSLv3/TLS read client hello, Send, DataLen: 5, Data= 1503030002
16:25:09:465 ProtoMsg: TLS 1.2 Alert, Fatal: , State: SSLv3/TLS read client hello, Send, DataLen: 2, Data= 0278
16:25:09:465 007428D8 ICB> SSL3 alert write fatal no application protocol
16:25:09:465 007428D8 ICB> SSL_accept: error 1 in error
16:25:09:465 007428D8 BIO_read(sslbio, 0x18FCF3, 0) = -1 [20]
16:25:09:465 007428D8 BIO_should_retry(sslbio) = 0 [21]
16:25:09:465 007428D8 HandleSslError handle=284 [22] error:1417A0E2:SSL routines:tls_post_process_client_hello:clienthello tlsext
16:25:09:465 007428D8 TriggerEvent handle=sslFdClose 284
16:25:09:465 007428D8 NetworkError #10053
It's from any computers, from any browsers. I add full log file
1.log