ubuntu 16 32位 拉取github失败

报错：

fatal: unable to access 'https://github.com/eclipse/paho.mqtt.c.git/': gnutls_handshake() failed: Error in the pull function.

fatal: unable to access 'https://github.com/eclipse/paho.mqtt.c.git/': Failed to connect to github.com port 443: Connection refused

 

解决方法：

apt-get -y install build-essential nghttp2 libnghttp2-dev libssl-dev

参考自：https://stackoverflow.com/questions/52379234/git-gnutls-handshake-failed-error-in-the-pull-function/54178424