Change Details

1. Use `getaddrinfo` to replace `gethostbyname` and use for loop to loop the address list and copy the first meet ipv4 address. 2. Use `getnameinfo` to replace `gethostbyaddr`.

1. Use `getaddrinfo` to replace `gethostbyname`. 2. Use `getnameinfo` with `NI_NAMEREQD` flag to replace `gethostbyaddr`.

1. Use `getaddrinfo` to replace `gethostbyname` and use for loop to. loop the address list and copy the first meet ipv4 address. 2. Use `getnameinfo` with `NI_NAMEREQD` flag to replace `gethostbyaddr`.