GSLink is a GainSpan patented feature. GSLink is all about passing on URI requests to the HOST in specific ESC formats. Once HOST receives the registered URI in ESC format and respond the query by formulating the response either in XML format or RAW HTTP format depending on which option is selected. AT+XMLPARSE=1 is for XML format otherwise RAW HTTP format. AT+URIRECV AT command is used for registering the URI for data transmission to/from HOST MCU. Refer to the GainSpan Serial-to-WiFi GSLink Examples Application Note AN022 for more information.
The below flow diagram will help you in understanding GSLINK better