Forum OpenACS Development: Re: Naviserver File download cancelled around 500k

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7: Re: Naviserver File download cancelled around 500k (response to 6)
Posted by Dave Bauer on 03/22/15 09:56 PM
Thanks Gustaf,

It does appear the proxy is expecting a complete response within about 15 seconds and if the reply is not completed it responds with 504 to the client. I am trying to get the administrator of the proxy to give me information about what happens there.

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8: Re: Naviserver File download cancelled around 500k (response to 7)
Posted by Gustaf Neumann on 03/24/15 12:04 PM
It seems, that there are more things to know to address the problem. If the result is sent via ns_return, then the problem will only appear when it takes the program more than 15 secs to generate the output. In this case, this has nothing to do with NaviServer.

Maybe it is an option for you to produce streaming output (via ns_write) as soon as you have partial results available. Most proxies send the "backend unresponsive" only when they receive no upstream output after the timeout.