Israel Brewster <isr...@ravnalaska.net> writes: > I have a Flask/UWSGI web app that serves up web socket connections. When a > web socket connection is created, I want to store a reference to said web > socket so I can do things like write messages to every connected > socket/disconnect various sockets/etc. UWSGI, however, launches multiple > child processes which handle incoming connections, so the data structure that > stores the socket connections needs to be shared across all said processes. > How can I do this?
At low (= Posix) level, socket objects are represented as ints, representing an "open communication object". Usually, a child process shares the parent's "open communication object"s *AT THE TINE OF THE CHILD CREATION*. However, often, this sharing is broken very quickly: the parent may have set up those objects to close automatically in the child; the parent may close its "open communication object" after the spawning of the child. If two processes have not inherited the same "open communication object" from a common ancestor, there is no way that they can share the communication object. I am quite convinced that UWSGI will be set up to close "open communication object"s passed on to child processes. Thus, I see little chance that your current approach can succeed. -- https://mail.python.org/mailman/listinfo/python-list
