The servers sits on port 5000. You need to send 'g' to get responce. Response from server
{
"aruco": [
{
"ID": 2,
"center": {
"x": 266,
"y": 259
},
"heading": -3.1150837133093243,
"markerCorners": [
{
"x": 129,
"y": 125
},
{
"x": 396,
"y": 129
},
{
"x": 402,
"y": 381
},
{
"x": 137,
"y": 401
}
],
"size": 267
}
]
}