Hi. I found there is a website which has https support. https://www.ib-channel.net/miegin/web/jsp/B02-01.jsp and browser can show its certificate chain. but when I use openssl to connect website, it returns fail. openssl s_client -connect www.ib-channel.net:443 CONNECTED(00000003) write:errno=104 --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 305 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE --- So what is wrong that openssl can not get website's certificate? Thanks! -- Rejoice,I Desire!