/*
* OtpCookedConnection delivers messages here return true if message was
* delivered successfully, or false otherwise.
*/
public bool deliver(OtpMsg m)
{
OtpMbox mbox = null;
try
{
int t = m.type();
if (t == OtpMsg.regSendTag)
{
String name = m.getRecipientName();
/* special case for netKernel requests */
if (name.Equals("net_kernel"))
{
return netKernel(m);
}
else
{
mbox = mboxes.get(name);
}
}
else
{
mbox = mboxes.get(m.getRecipientPid());
}
if (mbox == null)
{
return false;
}
mbox.deliver(m);
}
catch (Exception)
{
return false;
}
return true;
}
/*
* this method simulates net_kernel only for the purpose of replying to
* pings.
*/
private bool netKernel(OtpMsg m)
{
OtpMbox mbox = null;
try
{
OtpErlangTuple t = (OtpErlangTuple)m.getMsg();
OtpErlangTuple req = (OtpErlangTuple)t.elementAt(1); // actual
// request
OtpErlangPid pid = (OtpErlangPid)req.elementAt(0); // originating
// pid
OtpErlangObject[] pong = new OtpErlangObject[2];
pong[0] = req.elementAt(1); // his #Ref
pong[1] = new OtpErlangAtom("yes");
mbox = createMbox(true);
mbox.send(pid, new OtpErlangTuple(pong));
return true;
}
catch (Exception)
{
}
finally
{
closeMbox(mbox);
}
return false;
}
/** * Deliver messages to the recipient. */ public abstract void deliver(OtpMsg msg);
public override void deliver(OtpMsg msg)
{
queue.put(msg);
}
/*
* pass the message to the node for final delivery. Note that the connection
* itself needs to know about links (in case of connection failure), so we
* snoop for link/unlink too here.
*/
public override void deliver(OtpMsg msg)
{
bool delivered = self.deliver(msg);
switch (msg.type())
{
case OtpMsg.linkTag:
if (delivered)
{
links.addLink(msg.getRecipientPid(), msg.getSenderPid());
}
else
{
try
{
// no such pid - send exit to sender
base.sendExit(msg.getRecipientPid(), msg.getSenderPid(), new OtpErlangAtom("noproc"));
}
catch (IOException)
{
}
}
break;
case OtpMsg.unlinkTag:
case OtpMsg.exitTag:
links.removeLink(msg.getRecipientPid(), msg.getSenderPid());
break;
case OtpMsg.exit2Tag:
break;
}
return;
}
public override void deliver(OtpMsg m)
{
base.deliver(m);
sched.notify(this);
}
/*
* called by OtpNode to deliver message to this mailbox.
*
* About exit and exit2: both cause exception to be raised upon receive().
* However exit (not 2) causes any link to be removed as well, while exit2
* leaves any links intact.
*/
public virtual void deliver(OtpMsg m)
{
switch (m.type())
{
case OtpMsg.linkTag:
links.addLink(self, m.getSenderPid());
break;
case OtpMsg.unlinkTag:
links.removeLink(self, m.getSenderPid());
break;
case OtpMsg.exitTag:
links.removeLink(self, m.getSenderPid());
queue.put(m);
break;
case OtpMsg.exit2Tag:
default:
queue.put(m);
break;
}
}
