Zabbix server uses a JSON- based communication protocol for receiving data from Zabbix sender with the help of trapper item.
Request and response messages must begin with header and data length.
{
"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
}