Describe the bug
A clear and concise description of what the bug is.
用ktctl preview 把本地服务映射到环境的时候，ktctl 运行一段时候后会报socket: too many open files；
分析发现 kt-connect-shadow容器中产生了很多CLOSE_WAIT 的tcp连接无法释放。
Log
please add -d to debug log
Environment (please complete the following information):
OS: MacOS
Kubernetes [e.g. 1.10.1]
KT Version ： 0.3.6
Additional context
Add any other context about the problem here.
Describe the bug A clear and concise description of what the bug is. 用ktctl preview 把本地服务映射到环境的时候，ktctl 运行一段时候后会报socket: too many open files； 分析发现 kt-connect-shadow容器中产生了很多CLOSE_WAIT 的tcp连接无法释放。
Log please add -d to debug log
Environment (please complete the following information):
Additional context Add any other context about the problem here.