Sets @uri's host to @host.
If @host is an IPv6 IP address, it should not include the brackets required by the URI syntax; they will be added automatically when converting @uri to a string.
http and https URIs should not have a %NULL @host.
the hostname or IP address, or %NULL
See Implementation
Sets @uri's host to @host.
If @host is an IPv6 IP address, it should not include the brackets required by the URI syntax; they will be added automatically when converting @uri to a string.
http and https URIs should not have a %NULL @host.