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, 16 Aug 2018 14:23:33 GMT
Server: Python/3.5 GNS3/2.2.0dev2
X-Route: /v2/version

{
    "local": true,
    "version": "2.2.0dev2"
}