### GET /api/sessions?code=123
GET http://localhost:3000/api/sessions?code=123
Accept: application/json

### GET /api/sessions?code=FDZD3N
GET http://localhost:3000/api/sessions?code=FDZD3N
Content-Type: application/json

### GET /api/ws/new
GET http://localhost:3000/api/ws/new
Accept: application/json

### GET /api/ws/start_server
GET http://localhost:3000/api/ws/start_server
Accept: application/json