[Spread-users] join error?

[Ryan Caudy]

This isn't a bug.  SP_join doesn't involve two-way communication with
the daemon -- it only does some basic validation, and then sends the
request over the mailbox (socket).  If you kill the daemon, the socket
doesn't necessarily register that's the other endpoint is missing
immediately.  Only when the call to send() returns a failure code does
SP_join detect that the daemon is missing.

Cheers,
Ryan


On Tue, 22 Mar 2005 18:10:29 -0500, Serge Aleynikov <serge at hq.idt.net> wrote:
> Hi,
> 
> I just ran into this condition which seems to be en error in sp_join().
>   If you use spuser to connect to a spread daemon, then kill the daemon,
> and attempt to join a group, the sp_join() returns success, yet the
> second call to sp_join() fails.  Shouldn't the first call fail as well?
> 
> Serge
> 
> --------
>  >./spuser
> Spread library version is 3.17.3
> User: connected to 4803 at localhost with private group #user#DevLinuxPro
> 
> ==========
> User Menu:
> ----------
> 
>          j <group> -- join a group
>          l <group> -- leave a group
> 
>          s <group> -- send a message
>          b <group> -- send a burst of messages
> 
>          r -- receive a message (stuck)
>          p -- poll for a message
>          e -- enable asynchonous read (default)
>          d -- disable asynchronous read
> 
>          q -- quit
> 
> User> d
> 
> ---> Kill SPREAD daemon here <---
> 
> User> j test
> 
> User> j test
> SP_error: (-8) Connection closed by spread
> 
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