python-gcm causes MissingRegistration error about python-gcm HOT 9 CLOSED

@bauerj I pressume you are using the pypi version, which is a bit old and will hopefully be updated soon. That version of python-gcm doesn't handle MissingRegistration error received from the GCM server in the raise_error. This problem has been fixed in master branch.
Also in that version there is also a validation made inside the plaintext_request method right at the beginning for the registration_id to be not None, but if your stack trace goes to raise_error it means that the error is coming from the GCM server.

For debugging purposes you can either use a debugger or manually alter the gcm.py file that you have installed on your machine and inside the make_request method add two log statements for the following two things and tell use the output:

1. Print the request data, add a log statement for the data parameter right before the requests.post call is made to see exactly what the HTTP request data looks like
2. Print the response data, add a log statement for the response.content right after the requests.post call is made to see exactly what GCM server sends back.

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Hi,

I already did that: The data variable contains what I posted above and the response only contains Error=MissingRegistration.

And yes, I'm using the latest version from pypi.

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OK. So the above data is what you have right before making the HTTP request.
I'm interested in the exact response from the requests library not what you get back from python-gcm after processing the response, the response content should have more information.

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@bauerj I think one more thing is happening. Double URL encoding.
Even though I'm not authorized to send the request I've tried to debug the HTTP request using Wireshark and I see this when using as id fUxwjeZSVR0%3AAPA91bFfRy0DcYw_gxsMd86FEUdwhR6SrvAV46AHhSeWydnYtLMCvza055jXW-e-j-ETDGGCbVaMBN7TdKR8VvdkqLr_pofWkQcsb1o9FE7kqciPvXxYrxYvp98jZttDZSxe3f8dvuM7

POST /gcm/send HTTP/1.1
Host: gcm-http.googleapis.com
Accept: */*
Authorization: key=123api
Content-Length: 244
User-Agent: python-requests/2.8.0
Accept-Encoding: gzip, deflate
Connection: keep-alive

registration_id=fUxwjeZSVR0%253AAPA91bFfRy0DcYw_gxsMd86FEUdwhR6SrvAV46AHhSeWydnYtLMCvza055jXW-e-j-ETDGGCbVaMBN7TdKR8VvdkqLr_pofWkQcsb1o9FE7kqciPvXxYrxYvp98jZttDZSxe3f8dvuM7&data.address=9GWXR4aD6JSb6DMPxAKH9GeGrBDjhRyxuf&data.amount=36.11628274

%3 = :
%3 = %253
=> Double URL/percent encoding is happening

Can you please manually edit the gcm.py file of your installation and delete the following two lines in the make_request method and retry the request:

 if not is_json:
            data = urlencode_utf8(data)

The requests HTTP client library already does URL encoding so I think this might be the problem, let me know.

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@bauerj Any news?

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Sorry, I was busy earlier today.

Yes, this seems to solve the issue for me.

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In that case it seems like the plaintext_request was not tested enough before changing to requests library.
This problem is fixed in the master branch.

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Okay, when will it be fixed on Pypi?

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@bauerj I will discuss with @geeknam about the next release, we will do it soon.

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