wits-fe

Bug: When server has multi IPv6 addresses, only one will work.

1

OS: CentOS 7 There are three IPv6 addresses, for example: ``` A: 2600::1 B: 2600::2 C: 2600::3 ``` server side command: ``` server_linux_amd64 -t "127.0.0.1:4321" -l ":5432" -crypt none -mode...

add ipv6 support

6

若浏览器不支持 dnsResolveEx 方法 会自动回退到使用 dnsResolve 方法 IE11，Win10系统代理，Chrome 测试通过