Request: Statuses Update Request - Pastebin.com
Response: Statuses Update Response - Pastebin.com
Tried with both API 1 and 1.1.
API 1 produces a different error message: Statuses Update Response API 1 - Pastebin.com
It worked yesterday, I was able to post the same tweet. The only thing that was different yesterday: I initially sent the update without the cookies that I received from request_token (by mistake), and got a 401 (forgot exact response). I then reissued the request using Fiddler by manually adding in the cookies from request_token.
This morning I corrected the problem in my software which prevented sending the cookies, but no matter what I try, it still fails with subject error.
I tried apigee.com and the only meaningful difference I can see is apigee.com sends the status parameters in the query string, even though update is a POST.
Figured it out… was sending UTF8 BOM, and Fiddler doesn’t do it. Cookies are irrelevant.