Stops printing, in buffering state

[peteruithoven]

The two times I attempted to print the gear bearing (using the new Cura plugin) it stopped printing. There was no kernel error in the logread. It stopped at different layers. I rebooted the box in between these prints. Example status when it stopped:

{

    "data": 

    {
        "bed": ​0,
        "bed_target": ​0,
        "buffered_lines": ​43692,
        "current_line": ​0,
        "has_control": true,
        "hotend": ​210,
        "hotend_target": ​210,
        "state": "buffering",
        "total_lines": ​465353
    },
    "status": "success"

}

Hypothesis: It ran out of gcode to print, switched to idle state, received more gcode, switched to buffering. Because only the first print request makes it start printing it only buffers. Let's figure out if is does run out of gcode to print and if so, why.
It stopping at a different layer might indicate network connectivity issues.