net.DialTimeout failed with network

[okami-chen]

hotgo/server/internal/library/network/tcp/client.go:166: connect to 127.0.0.1:8099 error: net.DialTimeout failed with network "tcp", address "127.0.0.1:8099", timeout "10s": dial tcp 
127.0.0.1:8099: connectex: No connection could be made because the target machine actively refused it.

[bufanyun]

当tcp服务器没有启动时会出现这个错误，这是正常的。当tcp服务器启动以后，默认的所有tcp客户端都会进行重连

[Arc-zlz]

当tcp服务器没有启动时会出现这个错误，这是正常的。当tcp服务器启动以后，默认的所有tcp客户端都会进行重连

这个服务是什么服务,怎么启动