fsm and networks
Mon May 3 02:24:27 CEST 2004
On May 1, 2004, at 10:09, Vance Shipley wrote:
> Your FSM isn't really an FSM when you don't track state.
Hmm...I guess I'm a bit confused, then. Is gen_fsm not good for this
task? I imagined there would be a few different states:
connected -- first connected, but not authenticated
authenticated -- connected and authenticated
ready_for_query -- you know, ready for a query
query_pending -- a query has been issued and results are coming back
The state is changed by the server (connected is initial state).
Postgres has a command that arrives from the back end indicating the
state. query_pending is the exception in that it's client-driven, but
the server will send a message indicating when it's ready for queries
This is primarily an exercise in learning OTP, but hey, I need a
postgres driver, too and I've always wanted to implement the protocol.
I can get two out of three without OTP, but I figured I'd go for three.
SPY My girlfriend asked me which one I like better.
pub 1024/3CAE01D5 1994/11/03 Dustin Sallings <dustin@REDACTED>
| Key fingerprint = 87 02 57 08 02 D0 DA D6 C8 0F 3E 65 51 98 D8 BE
L_______________________ I hope the answer won't upset her. ____________
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