SequenceDiagram [frame=true framecolor=steelblue label="Connexion nominale"] {
  actor User
  lifeline "OnlineBet" as web
  lifeline "Bob : Personne" as person
 
  User --> web "connecte(bobleparieur@gmail.com,1234)"
  activate web
  web --> person "connecte(bobleparieur)"
  person -r-> web "ok"
  User <-r- web "connecté"
}
SequenceDiagram [frame=true framecolor=steelblue label="Connexion erronée"] {
  actor User
  lifeline "OnlineBet" as web
  lifeline "Bob : Personne" as person
 
  User --> web "connecte(bobleparieur@gmail.com,1234)"
  activate web
  web --> person "connecte(bobleparieur)"
  person -r-> web "erreur(informations_incorrectes)"
  User <-r- web "erreur(informations_incorrectes)"
}
SequenceDiagram [frame=true framecolor=steelblue label="Connexion nouvelle"] {
  actor User
  lifeline "OnlineBet" as web
  lifeline "Bob : Personne" as person
 
  User --> web "connecte(bobleparieur@gmail.com,1234)"
  activate web
  web --> person "connecte(bobleparieur)"
  person -r-> web "ok"
  User <-r- web "connecte(bobleparieur)"
}