Interface SignInManager

To sign in via the basic auth, specify the user name and password in plain text:

sm.signIn({
    username: 'user1@company.com',
    password: 'password1'
}).then(() => {
    console.log('Signed in as ' +
         client.personsAndGroupsManager.mePerson.name());
});

To sign in via IWA and make the browser show a credentials popup specify the domain FQDN:

sm.signIn({
    domain: 'company.com'
}).then(() => {
    console.log('Signed in as ' +
         client.personsAndGroupsManager.mePerson.name());
});

To join an online meeting anonymously specify the meeting URI:

sm.signIn({
    meeting: "sip:user5@contoso.com;gruu;opaque=app:conf:focus:id:QHJ72TKK"
}).then(() => {
    console.log("Signed in as " +
         client.personsAndGroupsManager.mePerson.uri());
});

To sign in via the implicit OAuth2 flow specify the client_id:

sm.signIn({
    client_id: '123-456',
    oauth_uri: 'https://login.windows-ppe.net/common/oauth2/authorize',
    cors: true,
    redirect_uri: '/an/empty/page.html',
    origins: [
        'https://webdir.tip.lync.com/AutoDiscover/AutoDiscoverservice.svc/root?originalDomain=contoso.com',
        'https://webdir.online.lync.com/AutoDiscover/AutoDiscoverservice.svc/root?originalDomain=contoso.com',
    ]
});

To connect to an existing app's event channel, specify id of that app:

sm.signIn({
    username: "user1@company.com",
    password: "password1",
    id: "273867-234235-45346345634-345"
});

To sign in to Skype for Business Online using OAuth while handling the logic of retrieving OAuth tokens yourself:

 sm.signIn({
     client_id: '123-456',
     origins: [ 'https://webdir.online.lync.com/AutoDiscover/AutoDiscoverservice.svc/root' ],
     cors: true,
     get_oauth_token: function(resource) {
         // Return a valid unexpired token for the specified resource if you already have one.
         // Else, return a promise and resolve it once you have obtained a token.
         return 'Bearer eyJ0e...';
     }
 });

 client.signOut().then(() => {
     console.log('Signed out');
 });

client.signInManager.state.when("SignedIn", () => {
    console.log("The client has signed in");
});

To determine the reason of being signed out, check Property#reason:

client.signInManager.state.when("SignedOut", reason => {
    console.log("Client signed out because " + reason);
    console.log("Client signed out because " + sm.state.reason);
});

Typically state.reason.code = "ConnectionLost" which indicates that the client has lost the event channel connection with UCWA.