@app.route('/auth', methods=['POST'])
def index():
    body = request.json
    headers = request.headers

    if body is None:
        abort(400)

    '''
    Si le header vernemq-hook est un auth_on_register
    '''
    if "auth_on_register" == (headers['vernemq-hook']
                              if 'vernemq-hook' in headers else None):

        username = body['username'].split(':') if "username" in (body if isinstance(body, Iterable) else {}) else "anonymous"

        if len(username) == 1:
            print("login")
        elif len(username) == 3:
            if username[0] == "ident":
                print("ident")
            if username[0] == "auth":
                print("token")
        else:
            print("anonymous")

    # Autres cas (header not match)
    else:
        abort(400)