Nomadix Access Gateway User Manual page 314

The packet after the HTTP headers added looks like this:
XML to Access Gateway
The Access Gateway accepts a single line of XML text in the specified format. The XML
string is a command sent by the External Server to the Access Gateway product. In this case,
the acknowledgement received from the External Server forms the command. The Access
Gateway expects the acknowledgement in the following format:
External Server to Access Gateway:
<USG COMMAND="RMTLOG_ACK">
<ACK_VALUE>RESULT_VALUE</ACK_VALUE>
<IP_ADDR>Server IP</IP_ADDR>
<ERROR_CODE>ERROR_CODE</ERROR_CODE>
</USG>
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