We have integrated with Contacts API for two-way synchronization between our website and Yahoo Contacts.
The sync was working fine for the last year (except when we had to switch from http to https before), but about two weeks ago we started to experience problem when doing PUT request to Yahoo API. GET requests are working fine.
Curl error #56: Received problem 2 in the chunky parser
This error indicates that the server forcing Transfer-Encoding: chunked, but encodes data incorrectly, so it cannot be decoded. According to HTTP protocol, the only way to "disable" chunked encoding of the request is to use HTTP 1.0. Now, unsurprisingly, the same request over HTTP 1.0 does not work, it returns status 401, most likely it fails to parse "Authorization" header that I send.
I tried to replace my GUID with string "me", to the following result: now API returns html instead of json with following body:
Will be right back...
Thank you for your patience.
Our engineers are working quickly to resolve the issue.
There is obviously a problem with Yahoo API and it's not fixed after a couple of weeks. Is it possible to get some feedback from Yahoo? Is there any way to get some kind of "premium" support for this API?
Our website heavily depends on Yahoo Contacts synchronization and we want to minimize the downtime because of such issues.