Zabbix server uses a JSON- based communication protocol for receiving data from Zabbix sender with the help of trapper item.
For definition of header and data length please refer to protocol details section.
{ "request":"sender data", "data":[ { "host":"<hostname>", "key":"trap", "value":"test value", "clock":1516710794 }, { "host":"<hostname>", "key":"trap", "value":"test value", "clock":1516710795 } ], "clock":1516712029, "ns":873386094 }