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When I use Python to generate a base64 string that will be used in the raw key { 'raw': value } GMAIL API, sending the email occurs perfectly.
But when I use Dart to generate the same base64 string, the string is not the same as python and because of that I can not send the email because the GMAIL API tells me message: Invalid value for ByteString
The string that will be converted to base64 is:
var message = '''<html><meta http-equiv="content-type" content="text/html; charset=utf-8"/><head></head><body>Test</body></html>'''
Python code:
import base64
e = base64.urlsafe_b64encode('''<html><meta http-equiv="content-type" content="text/html; charset=utf-8"/><head></head><body>Test</body></html>''')
print(e)
result:
PGh0bWw-PG1ldGEgaHR0cC1lcXVpdj0iY29udGVudC10eXBlIiBjb250ZW50PSJ0ZXh0L2h0bWw7IGNoYXJzZXQ9dXRmLTgiLz48aGVhZD48L2hlYWQ-PGJvZHk-VGVzdDwvYm9keT48L2h0bWw-
Dart code:
import 'dart:convert';
var _bytes = utf8.encode('''<html><meta http-equiv="content-type" content="text/html; charset=utf-8"/><head></head><body>Test</body></html>''');
var _base64 = base64Encode(_bytes);
print(_base64);
result:
PGh0bWw+PG1ldGEgaHR0cC1lcXVpdj0iY29udGVudC10eXBlIiBjb250ZW50PSJ0ZXh0L2h0bWw7IGNoYXJzZXQ9dXRmLTgiLz48aGVhZD48L2hlYWQ+PGJvZHk+VGVzdDwvYm9keT48L2h0bWw+
Note that the only difference is the + sign in the base64 string of the Dart, and the - sign in the base64 string of Python
How can I generate the same base64 python code, so I can send the email in the GMAIL API
323
You explicit asked Python for replacing all + characters with - in the base64 encoded string, because you have used the urlsafe_b64encode variant! The documentation says:
base64.urlsafe_b64encode(s)
Encode bytes-like object s using the URL- and filesystem-safe alphabet, which substitutes - instead of + and _ instead of / in the standard Base64 alphabet, and return the encoded bytes. The result can still contain =.
If you want the same string as Dart produces, just use simply encodebytes for Python3 or encode for Python 2.
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