I have a really strange behavior with encoding my request. I tried to follow all steps from Twitter recommendation but for Swedish characters (å, ö, ä, Å, Ä, Ö) I have got question mark in my tweets.
That how it looks my request string:
To send my request string to Twitter side I used conversion to byte array
If I use text without Swedish special characters it works perfect even with spaces, comma etc.
Do you have any ideas?