我的 Ubuntu (Ubuntu 16.04.5 LTS) 服务器有问题。这很奇怪。当我尝试使用任何工具通过 ssl 获取特定 URL 时，它失败了。例子：
卷曲
curl -v https://www.netonnet.se/
* Trying 91.198.164.24...
* Connected to www.netonnet.se (91.198.164.24) port 443 (#0)
* found 148 certificates in /etc/ssl/certs/ca-certificates.crt
* found 596 certificates in /etc/ssl/certs
* ALPN, offering http/1.1
* gnutls_handshake() failed: Error in the pull function.
* Closing connection 0
curl: (35) gnutls_handshake() failed: Error in the pull function.
工作组
wget -v https://www.netonnet.se/
--2018-12-29 12:00:42-- https://www.netonnet.se/
Resolving www.netonnet.se (www.netonnet.se)... 91.198.164.24
Connecting to www.netonnet.se (www.netonnet.se)|91.198.164.24|:443... connected.
Unable to …