bind 如何支持 tcp

[m1911]

bind如何支持tcp 要咋修改源码

[nightv2]

socket bind不就是支持么

[m1911]

@nightv2 socket bind 这个是啥 没玩过

[vvvoid]

bind 支持TCP？
问题内容有点少不知道真正要问的是什么……

[m1911]

@vvvoid 就是强制bind 用tcp去上游查询

[nadoo]

http://www.zytrax.com/books/dns/ch7/hkpng.html#tcp-clients

tcp-clients
tcp-clients number ;
tcp-clients 20;

By default DNS uses UDP port 53 for queries but is defined to allow both TCP and UDP. The tcp-clients allows the user to define the maximum number of TCP connections to be supported. The BIND 9 default is 100. This statement may only be used in a global options clause.