response_type: id_token (required, the tool must use a value of id_token)
redirect_uri:
http://ailanto-dev.intecca.uned.es:9002/lti/launch.php
response_mode: form_post (required, tools and platforms must support a value of form_post)
client_id: 9f80857a23b454866d1e (required, client identifier valid at the Platform)
scope: openid (required, must contain the openid scope value)
state: state-663f8938b4ac58_21649698 (required, opaque value used to maintain state between the request and the callback)
login_hint: 404321 (required, tools and platforms must support a value of form_post)
lti_message_hint: 62041 (required, a platform opaque identifier identifying the user to login)
prompt: none (optional, The tool should use a value of none. In the future a re-launch flow may support additional values being used here)
nonce: nonce-663f8938b4ae41.37695310 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)