On 24 Jan 2022, at 15:52, Yann Ylavic <ylavic....@gmail.com> wrote: >> SUSPENDED already has the opposite meaning, in that a suspended connection >> will be excluded from run_process_connection() until such time as some other >> event has occurred (response on DNS, a proxy connection received something, >> etc) and the connection resumed. > > Hm, where is that? (All the uses of SUSPENDED I see in httpd seem to > be "defer to the MPM".)
It does defer to the MPM, which then makes sure that connection stays out of the queues until some other out-of-band process is triggered for the connection to put back in the queue using ap_mpm_resume_suspended(). In other words “don’t call me ever, even if data is available, as I’m waiting for something else to happen, like say the result of a DNS lookup or a response from a backend connection”. In the case of AGAIN, it means “call me again when you have more data, serve other connections while we wait”. Regards, Graham —
