static void
recv_alive_msg (unsigned length)
{
CARD8 SessionRunning;
CARD32 AliveSessionID;
if (state != XDM_AWAIT_ALIVE_RESPONSE)
return;
if (length != 5)
return;
if (XdmcpReadCARD8 (&buffer, &SessionRunning) &&
XdmcpReadCARD32 (&buffer, &AliveSessionID))
{
if (SessionRunning && AliveSessionID == SessionID)
{
/* backoff dormancy period */
state = XDM_RUN_SESSION;
if ((GetTimeInMillis() - lastDeviceEventTime.milliseconds) >
keepaliveDormancy * 1000)
{
keepaliveDormancy <<= 1;
if (keepaliveDormancy > XDM_MAX_DORMANCY)
keepaliveDormancy = XDM_MAX_DORMANCY;
}
timeOutTime = GetTimeInMillis() + keepaliveDormancy * 1000;
}
else
{
XdmcpDeadSession ("Alive respose indicates session dead");
}
}
}
static void
recv_alive_msg(unsigned length)
{
CARD8 SessionRunning;
CARD32 AliveSessionID;
if (state != XDM_AWAIT_ALIVE_RESPONSE)
return;
if (length != 5)
return;
if (XdmcpReadCARD8(&buffer, &SessionRunning) &&
XdmcpReadCARD32(&buffer, &AliveSessionID)) {
if (SessionRunning && AliveSessionID == SessionID) {
state = XDM_RUN_SESSION;
timeOutTime = GetTimeInMillis() + XDM_DEF_DORMANCY * 1000;
}
else {
XdmcpDeadSession("Alive response indicates session dead");
}
}
}
static void
timeout(void)
{
timeOutRtx++;
if (state == XDM_AWAIT_ALIVE_RESPONSE && timeOutRtx >= XDM_KA_RTX_LIMIT) {
XdmcpDeadSession("too many keepalive retransmissions");
return;
}
else if (timeOutRtx >= XDM_RTX_LIMIT) {
/* Quit if "-once" specified, otherwise reset and try again. */
if (OneSession) {
dispatchException |= DE_TERMINATE;
ErrorF("XDM: too many retransmissions\n");
}
else {
XdmcpDeadSession("too many retransmissions");
}
return;
}
#if defined(IPv6) && defined(AF_INET6)
if (state == XDM_COLLECT_QUERY || state == XDM_COLLECT_INDIRECT_QUERY) {
/* Try next address */
for (mgrAddr = mgrAddr->ai_next;; mgrAddr = mgrAddr->ai_next) {
if (mgrAddr == NULL) {
mgrAddr = mgrAddrFirst;
}
if (mgrAddr->ai_family == AF_INET || mgrAddr->ai_family == AF_INET6)
break;
}
#ifndef SIN6_LEN
ManagerAddressLen = mgrAddr->ai_addrlen;
#endif
memcpy(&ManagerAddress, mgrAddr->ai_addr, mgrAddr->ai_addrlen);
}
#endif
switch (state) {
case XDM_COLLECT_QUERY:
state = XDM_QUERY;
break;
case XDM_COLLECT_BROADCAST_QUERY:
state = XDM_BROADCAST;
break;
#if defined(IPv6) && defined(AF_INET6)
case XDM_COLLECT_MULTICAST_QUERY:
state = XDM_MULTICAST;
break;
#endif
case XDM_COLLECT_INDIRECT_QUERY:
state = XDM_INDIRECT;
break;
case XDM_AWAIT_REQUEST_RESPONSE:
state = XDM_START_CONNECTION;
break;
case XDM_AWAIT_MANAGE_RESPONSE:
state = XDM_MANAGE;
break;
case XDM_AWAIT_ALIVE_RESPONSE:
state = XDM_KEEPALIVE;
break;
default:
break;
}
send_packet();
}
