[root@vagrant-centos65 you-get]# curl -v https://api.xxx.cn
* About to connect() to api.xxx.cn port 443 (#0)
*   Trying 123.xxx.xx.xx... connected
* Connected to api.xxx.cn (123.xxx.xx.xx) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* NSS error -12286
* Closing connection #0
* SSL connect error
curl: (35) SSL connect error

[root@vagrant-centos65 you-get]# curl --version
curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.19.1 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2
Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp
Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz