Hi,
I am new to App Engine and am trying to write an application which will
access Google Calendar to get details of any events for the current time. I
am struggling to see how the authentication should work to permit access to
Calendar. I believe OAuth2 is the preferred authentication option so I have
a client_secrets.json file with the ClientID and Client Secret from an API
Access project I have separately created:
{
"web":{
"auth_uri":"https://accounts.google.com/o/oauth2/auth";,
"client_secret":"xxxxxxx",
"token_uri":"https://accounts.google.com/o/oauth2/token";,
"client_email":"[email protected]",
"redirect_uris":["https://myapp.appspot.com/oauth2callback";],
"client_x509_cert_url":
"https://www.googleapis.com/robot/v1/metadata/x509/[email protected]";
,
"client_id":"123456789.apps.googleusercontent.com",
"auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs";,
"javascript_origins":["https://myapp.appspot.com";]
}
}
This was a direct export from the API Access project using the 'Download
JSON' option. When I deploy my app engine application I get an error:
Error: redirect_uri_mismatch
The redirect URI in the request: http://myapp.appspot.com/oauth2callback
did not match a registered redirect URI
Learn more <http://code.google.com/apis/accounts/docs/OAuth2.html>
Request Details
scope=https://www.googleapis.com/auth/calendar
response_type=code
access_type=offline
redirect_uri=https://myapp.appspot.com/oauth2callback
display=page
client_id=123456789.apps.googleusercontent.com
It all looks fine to me so I am not sure what the error is telling me. Do I
need link the App Engine application to the API Access project in some way.
Am I missing something else fundamental.
If there is any additional information which will help you understand the
set up please let me know. I wanted to keep the post small.
Thanks
James
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