This morning I'm seeing sporadic failures across the board for our various integrations in production. In the logs they are being thrown as System.CalloutExceptions.
First error: IO Exception: Unable to tunnel through proxy. Proxy returns "HTTP/1.0 500 Internal Server Error"
And this error less frequently:
This is popping up on webservice callouts that have been working without issue anywhere from a month to 2 years. We are not making any of these requests through a proxy. Some requests to an endpoint fail with this error, and I see several seconds later another request that succeeds. I have opened an urgent ticket with Salesforce, although they have yet to respond.We are on NA18, which upgraded to Winter '16 this past weekend.Are we running into some new limit with concurrent requests that I'm unaware of?First error: IO Exception: Connection reset
2 answers
Update: Salesforce support says others are reporting this as well, and R&D is looking into the issue.
