curl -i -X POST 'http://localhost:3080/v2/compute/projects/a1e920ca-338a-4e9f-b363-aa607b09dd80/iou/nodes/2c1dfb5a-629f-4f71-a28b-32b5afdda38c/adapters/0/ports/0/start_capture' -d '{"capture_file_name": "test.pcap", "data_link_type": "DLT_EN10MB"}'

POST /v2/compute/projects/a1e920ca-338a-4e9f-b363-aa607b09dd80/iou/nodes/2c1dfb5a-629f-4f71-a28b-32b5afdda38c/adapters/0/ports/0/start_capture HTTP/1.1
{
    "capture_file_name": "test.pcap",
    "data_link_type": "DLT_EN10MB"
}


HTTP/1.1 200
Connection: close
Content-Length: 145
Content-Type: application/json
Date: Mon, 08 Jan 2018 08:15:48 GMT
Server: Python/3.6 GNS3/2.1.2dev1
X-Route: /v2/compute/projects/{project_id}/iou/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/start_capture

{
    "pcap_file_path": "/private/var/folders/qy/g6blgc5n7y93pzg61zyt7cmr0000gn/T/pytest-of-behlers/pytest-0/test_json4/tmp/captures/test.pcap"
}