"unauthorized_client" is returning zero search results in this forum;
that's hard to believe, maybe it's a temporary problem with the search
engine. My apologies if there's already a thread for it.
I'm using the .Net library, and calling get() on
Google.Api.Ads.AdWords.v201306.CampaignService. This is failing; here's
the error:
Google.Api.Ads.Common.Lib.AdsOAuthException: Failed to refresh access token.
{
"error" : "unauthorized_client"
}
...and the stack trace:
at
Google.Api.Ads.Common.Lib.OAuth2ProviderForApplications.RefreshAccessTokenInOfflineMode()
at
Google.Api.Ads.Common.Lib.OAuth2ProviderForApplications.RefreshAccessToken()
at
Google.Api.Ads.Common.Lib.OAuth2ProviderBase.RefreshAccessTokenIfExpiring()
at Google.Api.Ads.Common.Lib.OAuth2ProviderBase.GetAuthHeader()
at Google.Api.Ads.AdWords.Lib.AdWordsSoapClient.InitForCall(String
methodName, Object[] parameters)
at Google.Api.Ads.Common.Lib.AdsSoapClient.MakeApiCall(String methodName,
Object[] parameters)
at Google.Api.Ads.Common.Lib.AdsSoapClient.Invoke(String methodName,
Object[] parameters)
at Google.Api.Ads.AdWords.v201306.CampaignService.get(Selector
serviceSelector)
<my code...>
I can only assume that I'm not giving the library enough data; here's where
I initialize my user info:
_oAuth2User = new AdWordsUser();
AdWordsAppConfig apiConfig = (AdWordsAppConfig)_oAuth2User.Config;
apiConfig.AuthorizationMethod = AdWordsAuthorizationMethod.OAuth2;
apiConfig.DeveloperToken = _developerToken;
OAuth2ProviderForApplications oAuthProvider = new
OAuth2ProviderForApplications(apiConfig);
oAuthProvider.Config.OAuth2Mode = OAuth2Flow.APPLICATION;
oAuthProvider.ClientId = _clientId;
oAuthProvider.ClientSecret = _clientSecret;
oAuthProvider.RefreshToken = _refreshToken;
_oAuth2User.OAuthProvider = oAuthProvider;
I've collected my client ID, client secret, developer token, auth token,
and refresh token (with the AdWords scope) from Google. A client ID,
client secret, and refresh token are enough to generate new access tokens
at will (I've done it, for other Google APIs), so I'm not sure what's
causing the error.
If there is another field I need to specify, the library should flag that
specifically rather than giving a generic error message. Making an OAuth
subclass of AdWordsUser with parameters for the required fields, rather
than making us guess about what's needed and populate several different
objects, would really help move this library into "ready for prime time."
I can connect to AdWords just fine for ad hoc reports when I bypass the
.Net library and simply POST to
https://adwords.google.com/api/adwords/reportdownload/v201306. I haven't
seen a similar mechanism for campaigns and ad groups, but that would be my
preference if anyone can point me in the right direction.
- J
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