JavaScript

LinkedIn OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to get a LinkedIn OAuth2 access token from a desktop application or script.

Note: This example requires Chilkat v10.1.2 or later.

JavaScript

var success = false;

// To further clarify, see OAuth 2.0 Authorization Flow

var oauth2 = new CkOAuth2();

// The port should match the Authorized Redirect URL in your LinkedIn app, 
// which would look like "http://localhost:3017/"
// See a screenshot below...
oauth2.ListenPort = 3017;

oauth2.AuthorizationEndpoint = "https://www.linkedin.com/oauth/v2/authorization";
oauth2.TokenEndpoint = "https://www.linkedin.com/oauth/v2/accessToken";

// Replace these with actual values.
oauth2.ClientId = "CLIENT_ID";
oauth2.ClientSecret = "CLIENT_SECRET";
oauth2.Scope = "w_member_social";

// Begin the OAuth2 three-legged flow.  This returns a URL that should be loaded in a browser.
var url = oauth2.StartAuth();
if (oauth2.LastMethodSuccess !== true) {
    console.log(oauth2.LastErrorText);
    return;
}

// Launch the default browser on the system and navigate to the url.
// The LaunchBrowser method was added in Chilkat v10.1.2.
success = oauth2.LaunchBrowser(url);
if (success == false) {
    console.log(oauth2.LastErrorText);
    return;
}

// Wait for the interactive user to grant permission in the interactive browser session.
// We'll wait for a max of 90 seconds.
var numMsWaited = 0;
while ((numMsWaited < 90000) && (oauth2.AuthFlowState < 3)) {
    oauth2.SleepMs(100);
    numMsWaited = numMsWaited+100;
}

// If there was no response from the browser within 90 seconds, then 
// the AuthFlowState will be equal to 1 or 2.
// 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.
// 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.
// In that case, cancel the background task started in the call to StartAuth.
if (oauth2.AuthFlowState < 3) {
    oauth2.Cancel();
    console.log("No response from the browser!");
    return;
}

// Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred
// The possible AuthFlowState values are:
// 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.
// 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.
// 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.
if (oauth2.AuthFlowState == 5) {
    console.log("OAuth2 failed to complete.");
    console.log(oauth2.FailureInfo);
    return;
}

if (oauth2.AuthFlowState == 4) {
    console.log("OAuth2 authorization was denied.");
    console.log(oauth2.AccessTokenResponse);
    return;
}

if (oauth2.AuthFlowState !== 3) {
    console.log("Unexpected AuthFlowState:" + oauth2.AuthFlowState);
    return;
}

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

console.log("Full JSON Response = " + oauth2.AccessTokenResponse);

// Example JSON Response:
// 
// {
//   "access_token": "AQU7C5zU8n....ggWyUA",
//   "expires_in": 5183999,
//   "scope": "w_member_social"
// }

// Save the full JSON access token response to a file.
var sbJson = new CkStringBuilder();
sbJson.Append(oauth2.AccessTokenResponse);
sbJson.WriteFile("qa_data/tokens/_linkedIn.json","utf-8",false);

// Here is an example showing how to define your App in the LinkedIn developers console:
//