Can't retrieve token with code when using one-time code flow.

    var code = req.body.code;
    var oauth2Client = new gapis.OAuth2Client(CLIENT_ID, CLIENT_SECRET, REDIRECT_URL);
    oauth2Client.getToken(code, function(err, tokens) {
        oauth2Client.setCredentials(tokens);
        callback.call();
    });

I’m sure of that all the three parameters of new OAuth2Client() are correct, but still got a redirect_uri_mismatch error.

[mhaagens]

How awesome that this is undocumented.

[jongminjang]

if you want to use one-time code flow, the login button should look like following. <span id="login" class="g-signin" data-height="short" data-callback="loginToGoogle" data-cookiepolicy="single_host_origin" data-scope="https://www.googleapis.com/auth/userinfo.email" data-clientid="this attribute is set by javascript :)" data-accesstype="offline" data-redirecturi="postmessages">

see data-accesstype and data-redirectuir attributes.

and in your node source, you must create oauth2client like this. var oauth2Client = new googleapis.OAuth2Client( gooClientId, gooClientSecret, ‘postmessage’);

redirect uri argument must be ‘postmessage’ which is undocumented.

oauth2client.getToken(token, function(err, token) { oauth2client.setCredentials(token); //now works. });

hope this helpful.