Simon Willison’s Weblog

What exactly the error meaning client closed prematurely connection while sending to client from upstream in nginx?

27th October 2013

My answer to What exactly the error meaning client closed prematurely connection while sending to client from upstream in nginx? on Quora

I think it means that the connection to the user’s browser was lost before the request had been fully transferred—for example due to the user hitting the stop button in their browser or switching off their wifi connection.