curl -i -X GET 'http://localhost:3080/v2/version'

GET /v2/version HTTP/1.1



HTTP/1.1 200
Connection: close
Content-Length: 49
Content-Type: application/json
Date: Thu, 14 Jun 2018 08:35:21 GMT
Server: Python/3.5 GNS3/2.1.8dev1
X-Route: /v2/version

{
    "local": true,
    "version": "2.1.8dev1"
}