update readme

README.md

@@ -19,16 +19,59 @@ php -S localhost:8080
 
 ## Usage
 
+### Socket
+
+Check socket
+
+#### Usage
+
+* `port` required
+* `host` optional, name, IPv4 or IPv6 (`REMOTE_ADDR` by default)
+
+```
+GET socket.php?port=80&host=php.net
+```
+
+##### Response
+
+```
+JSON
+{
+  status: bool
+}
+```
+
 ### Dig
 
-#### Single record
+Show host records
+
+#### Usage
+
+* `name` required host name, IPv4 or IPv6
+* `record` required if `records` not provided
+* `records` required if `record` not provided
+  + [x] A
+  + [x] AAAA
+  + [ ] SRV #1
+
+##### Single record
 
 ```
-dig.php?name=php.net&record=A
+GET dig.php?name=php.net&record=A
 ```
 
-#### Multiple records
+##### Multiple records
 
 ```
-dig.php?name=php.net&records[]=A&records[]=AAAA
+GET dig.php?name=php.net&records[]=A&records[]=AAAA
+```
+
+##### Response
+
+```
+JSON
+{
+  status: bool
+  records: array
+}
 ```