Dave Page <[EMAIL PROTECTED]> writes: > Stephen Frost wrote: >> I'm curious as to which Unix systems allow multiple processes to listen >> on the same port at the same time.. On Linux, and I thought on most, >> you get an EADDRINUSE on the listen() call (which the postmaster should >> pick up on and bomb out, which it may already).
> Linux certainly does. Mmm, you're right, I misread the man page: Setting the SO_REUSEADDR option allows the local socket address to be reused in subsequent calls to bind(). This permits multiple SOCK_STREAM sockets to be bound to the same local address, as long as all existing sockets with the desired local address are in a connected state before bind() is called for a new socket. The bit about "connected state" is relevant here --- a listening socket isn't connected. Time for more caffeine. > Windows seems to treat SO_REUSEADDR in the same > way as SO_REUSEPORT which just seems wrong. Well, Microsoft getting standards wrong is no surprise. So what do we want to do about it? regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate