Node.js

Hotmail Refresh Access Token (also for Live.com, Outlook.com)

See more OAuth2 Examples

An OAuth2 access token is typically valid for 1 hour. Interaction with the Hotmail account owner via a browser is only needed for getting the initial access token. Once you have it, it can be continually refreshed without user interaction for a long time.

See: How Long can an OAuth2 Access Token be Refreshed?

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  It is assumed we previously obtained an OAuth2 access token.

    //  Note: Refreshing an access token does not require user-interaction.  
    //  Only the act of getting the initial access token requires interactive authorization from the Hotmail account owner 
    //  (i.e. a browser is displayed and the Hotmail account owner authorizes access by the app).

    //  Once you have the initial access token, it can be refreshed for a long time.
    //  A typical strategy is to write your application to automatically refresh the access token 
    //  when authentication fails, and then retry the operation with the new access token.

    var jsonToken = new chilkat.JsonObject();
    success = jsonToken.LoadFile("qa_data/tokens/hotmail.json");
    if (success !== true) {
        console.log("Failed to load office365.json");
        return;
    }

    //  The access token JSON looks like this:

    //  {
    //    "token_type": "Bearer",
    //    "scope": "https://outlook.office.com/SMTP.Send https://outlook.office.com/IMAP.AccessAsUser.All https://outlook.office.com/POP.AccessAsUser.All",
    //    "expires_in": 3600,
    //    "ext_expires_in": 3600,
    //    "access_token": "EwBoA+ ... 7pOYcWr5pFwQgI=",
    //    "refresh_token": "M.C546_BL2.0.U.-CkW ... g5CKSlDBQ$$",
    //    "id_token": "eyJ0e ... 2iiu5iqBK9n7s3A"
    //  }

    var oauth2 = new chilkat.OAuth2();

    //  See Microsoft OAuth2 Authorization Endpoint
    oauth2.TokenEndpoint = "https://login.microsoftonline.com/common/oauth2/v2.0/token";

    //  Replace this with your actual App Registration's Application (client) ID.
    oauth2.ClientId = "CLIENT_ID";

    //  Get the "refresh_token"
    oauth2.RefreshToken = jsonToken.StringOf("refresh_token");

    //  Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success !== true) {
        console.log(oauth2.LastErrorText);
        return;
    }

    console.log(oauth2.LastErrorText);

    console.log("New access token: " + oauth2.AccessToken);
    console.log("New refresh token: " + oauth2.RefreshToken);

    //  Update the JSON with the new tokens.
    jsonToken.UpdateString("access_token",oauth2.AccessToken);
    jsonToken.UpdateString("refresh_token",oauth2.RefreshToken);

    //  Save the new JSON access token response to a file.
    var sbJson = new chilkat.StringBuilder();
    jsonToken.EmitCompact = false;
    jsonToken.EmitSb(sbJson);
    sbJson.WriteFile("qa_data/tokens/hotmail.json","utf-8",false);

    console.log("OAuth2 authorization granted!");
    console.log("New Access Token = " + oauth2.AccessToken);

}

chilkatExample();