openssl s_client -connect 127.0.0.1:9345 -showcerts < /dev/null 2>&1
Certificate chain
0 s:/CN=*.b.ops.x.com
i:/C=CN/O=TrustAsia Technologies, Inc./CN=TrustAsia RSA DV TLS CA G3
1 s:/C=CN/O=TrustAsia Technologies, Inc./CN=TrustAsia RSA DV TLS CA G3
i:/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA Certification Authority
2 s:/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA Certification Authority
i:/C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services
Server certificate
subject=/CN=*.b.ops.x.com
issuer=/C=CN/O=TrustAsia Technologies, Inc./CN=TrustAsia RSA DV TLS CA G3
服务器证书（Server certificate）：
主题（subject）：该证书所属的主体是 *.b.ops.x.com，表示该证书适用于以 *.b.ops.x.com 为域名的服务器。
颁发者（issuer）：该证书由 TrustAsia Technologies, Inc. 颁发，其名称为 TrustAsia RSA DV TLS CA G3。
证书链（Certificate chain）：
第一个证书：
主题：TrustAsia RSA DV TLS CA G3
颁发者：TrustAsia Technologies, Inc.
第二个证书：
主题：USERTrust RSA Certification Authority
颁发者：The USERTRUST Network
第三个证书：
主题：AAA Certificate Services
颁发者：Comodo CA Limited