Update infrastructure.go

rpcclient/infrastructure.go

@@ -1726,6 +1726,10 @@ func (c *Client) Send() error {
 	return nil
 }
 
+// ParseAddressString converts an address in string format to a net.Addr that is
+// compatible with lnd. UDP is not supported because lnd needs reliable
+// connections. We accept a custom function to resolve any TCP addresses so
+// that caller is able control exactly how resolution is performed.
 func ParseAddressString(strAddress string, defaultPort string) (net.Addr, error) {
     var parsedNetwork, parsedAddr string
 
@@ -1766,6 +1770,10 @@ func ParseAddressString(strAddress string, defaultPort string) (net.Addr, error)
     }
 }
 
+// verifyPort makes sure that an address string has both a host and a port. If
+// there is no port found, the default port is appended. If the address is just
+// a port, then we'll assume that the user is using the short cut to specify a
+// localhost:port address.
 func verifyPort(address string, defaultPort string) string {
     host, port, err := net.SplitHostPort(address)
     if err != nil {