Hi there,
I have a task I need to try to do in AOLServer which is not working out
so well so far.
The deal is, I need to open a connection to a port on the same machine,
or another machine, and send commands back and forth. That part is easy
enough.
The connection needs to be persistent though, and ideally I would open
one connection that all threads in the server could use. If that's not
possible, then each thread having it's own, persistent connection would
be OK. As it is now, when a connection is finished, the open file
handles are all closed so the next use of the thread requires the
connection to be opened again.
The requirements here are not dis-similar to how database connections
work in aolserver: I'd like bits of code to be able to "grab" a handle
to the server, send a command, get a response, and then release it back
into the pool. I seem to recall that AOLServer used to support (maybe
still does?) writing "external" database drivers but I can't find much
info on it now other than cryptic remarks in the current AOLServer
docs. This would be kind of a kludge but it might work.
I guess I could probably write an "internal" driver also in C
Other than that I suppose I could look at ns_db and how it's written and
see if I could write something like it.
I don't mind writing my interaction with the server in question in C if
need be. I'm not entirely sure how threads work with C modules. Let's
say I have my module open a socket (not a tcl-socket mind you, just a
normal C network socket) to the server. Would any thread be able to
access this socket? That is, do AOLServer modules share global
variables or is it per-thread?
OK I know I've thrown a lot of stuff out there. I'm looking for any and
all approaches to the problem. If it's not clear what I'm after I'd be
happy to clarify.
Rusty
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