Hi,
Except set MEMP_NUM_TCP_PCB=1 in
your lwipopts.h, I don't think there is a way to do that with tcp_listen.
Even in socket layer, with "lwip_listen(int
s, int backlog)", the
"backlog" parameter is not used. But you can close as soon as possible any
new connection: to do that, you can use a boolean initialized to false, and
in "accept" callback (set by tcp_accept), you do something like
this:
int connected=0;
static err_t
accept_function(void *arg, struct tcp_pcb *newpcb, err_t
err)
{ if (connected) {
tcp_close(newpcb);
} else {
connected=1;
/* your normal accept
behavior */
}
}
and when you have finish to use your "single"
connection, you reset connected to 0.
----- Original Message -----
Sent: Wednesday, October 10, 2007
8:46 PM
Subject: [lwip-users] Limit
tcp_listen to single connection
Is there a way to limit the tcp_listen
function to only accept a single connection. I would like to limit a
specific port to accept the first connection request and then refuse any
additional connections until the first connection has been closed.
Does anyone know of a way to do this?
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