I'm struggling to understand if I'm able to do something.
In my very odd use case we are writing a websever that handles connections
via a forked process.
I have a listener process that listens for TCP connections.
So each net.Conn that comes in we pull off its file descriptor:
*fd, err := conn.(*net.TCPConn).File()*
duplicate that file descriptor and then fork off a process passing in that
file descriptor.
In my forked handler I'll reconstruct the HTTP connection and "do stuff".
The concern I'm having is that it appears when I fork a process I inherit
all of the parent file descriptors so if I have say 5 incoming connections
and then I fork my child process *technically* could write to a different
connection.
I've played around with the various options:
cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: false,}
and using cmd.ExtraFiles
No matter what I do I seem unable to limit the sub process to ONLY using
the specific File Descriptor I want it to have access to.
I believe this is doable in C - but I'm not sure if I can do this in GoLang
as-is without mods .
Thanks!!!
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