[sr-dev] getting id of closed ws connection using $conid pv

[Juha Heinanen]

before event_route[websocket:closed] is run, i can assign id of the
closed ws connection to rcv.proto_reserved1 field of the faked message:

static void wsconn_run_route(ws_connection_t *wsc)
{
...
	fmsg = faked_msg_next();
	wsc->rcv.proto_reserved1 = wsc->id;
	fmsg->rcv = wsc->rcv;
...
}

the problem is that

int pv_get_tcpconn_id(struct sip_msg *msg, pv_param_t *param,
		pv_value_t *res)

calls tcpconn_get:

	if ((con = tcpconn_get(msg->rcv.proto_reserved1, 0, 0, 0, 0)) == NULL)
		return pv_get_null(msg, param, res);

and since the ws connection whose id is stored in
msg->rcv.proto_reserved1 does not anymore exist, the statement returns
null pv value.

is there some way to figure out that $conid was accessed from 
event_route[websocket:closed] in which case the connection id stored in
msg->rcv.proto_reserved1 should be returned without checking if that
connection still exists?

if not, i guess i need to introduce yet another pv for the purpose.

-- juha