SSL_write() failed (55: No buffer space available) while proxying upgraded connection

[johan.belin]

Hi Sergey, 

Thanks for your reply!

Unfortunately that is exactly the type of knowledge we lack!
Any idea where we can find someone that can help us with that?
MacMini M1 macOS BigSur 11.6

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,292750,292753#msg-292753