curl -i -X POST 'http://localhost:3080/v2/shutdown' -d '{}'

POST /v2/shutdown HTTP/1.1
{}


HTTP/1.1 201
CONTENT-LENGTH: 0
DATE: Thu, 08 Jan 2015 16:09:15 GMT
SERVER: Python/3.5 GNS3/2.0.0dev1
X-ROUTE: /v2/shutdown