教程链接：https://www.yuque.com/wangdd/opensips/sngrep#gbX9j
1、centos安装sngrep
编辑yum源
vim /etc/yum.repos.d/irontec.repo
[irontec]
name=Irontec RPMs repository
baseurl=http://packages.irontec.com/centos/$releasever/$basearch/ 安装
rpm --import http://packages.irontec.com/public.key
yum install -y sngrep