/*
* <p> Determine if another node is alive. This method has the side
* effect of setting up a connection to the remote node (if
* possible). Only a single outgoing message is sent; the timeout is
* how long to wait for a response. </p>
*
* <p> Only a single attempt is made to connect to the remote node,
* so for example it is not possible to specify an extremely long
* timeout and expect to be notified when the node eventually comes
* up. If you wish to wait for a remote node to be started, the
* following construction may be useful: </p>
*
* <pre>
* // ping every 2 seconds until positive response
* while (!me.ping(him,2000));
* </pre>
*
* @param node the name of the node to ping.
*
* @param timeout the time, in milliseconds, to wait for response
* before returning false.
*
* @return true if the node was alive and the correct ping response
* was returned. false if the correct response was not returned on
* time.
**/
/*internal info about the message formats...
*
* the request:
* -> REG_SEND {6,#Pid<[email protected]>,'',net_kernel}
* {'$gen_call',{#Pid<[email protected]>,#Ref<[email protected]>},{is_auth,bingo@aule}}
*
* the reply:
* <- SEND {2,'',#Pid<[email protected]>}
* {#Ref<[email protected]>,yes}
*/
public virtual bool ping(System.String node, long timeout)
{
if (node.Equals(this._node))
{
return(true);
}
OtpMbox mbox = null;
try
{
mbox = createMbox();
mbox.send("net_kernel", node, getPingTuple(mbox));
Erlang.Object reply = mbox.receive(timeout);
Erlang.Tuple t = (Erlang.Tuple)reply;
Erlang.Atom a = (Erlang.Atom)(t.elementAt(1));
return("yes".Equals(a.atomValue()));
}
catch (System.Exception)
{
}
finally
{
closeMbox(mbox);
}
return(false);
}
/*
* this method simulates net_kernel only for
* the purpose of replying to pings.
*/
private bool netKernel(OtpMsg m)
{
OtpMbox mbox = null;
try
{
Erlang.Tuple t = (Erlang.Tuple)(m.getMsg());
Erlang.Tuple req = (Erlang.Tuple)t.elementAt(1); // actual request
Erlang.Pid pid = (Erlang.Pid)req.elementAt(0); // originating pid
Erlang.Object[] pong = new Erlang.Object[2];
pong[0] = req.elementAt(1); // his #Ref
pong[1] = new Erlang.Atom("yes");
mbox = createMbox();
mbox.send(pid, new Erlang.Tuple(pong));
return(true);
}
catch (System.Exception)
{
}
finally
{
closeMbox(mbox);
}
return(false);
}
public virtual void remove(OtpMbox mbox)
{
byPid.Remove(mbox._self);
if (mbox.name != null)
{
byName.Remove(mbox.name);
}
}
public virtual OtpMbox create()
{
Erlang.Pid pid = enclosingInstance.createPid();
OtpMbox m = new OtpMbox(enclosingInstance, pid);
byPid[pid] = new WeakReference(m);
return(m);
}
/*
* Close the specified mailbox.
*
* @param the mailbox to close.
*
* <p> After this operation, the mailbox will no longer be able to
* receive messages. Any delivered but as yet unretrieved messages
* can still be retrieved however. </p>
*
* <p> If there are links from the mailbox to other {@link
* OtpErlangPid pids}, they will be broken when this method is
* called and exit signals will be sent. </p>
*
**/
public virtual void closeMbox(OtpMbox mbox)
{
if (mbox != null)
{
mboxes.remove(mbox);
mbox.name = null;
mbox.breakLinks("normal");
}
}
/*
* Determine the {@link Pid pid} corresponding to a
* registered name on this node.
*
* @return the {@link Pid pid} corresponding to the
* registered name, or null if the name is not known on this node.
**/
public virtual Erlang.Pid whereis(System.String name)
{
OtpMbox m = mboxes.get(name);
if (m != null)
{
return(m.self());
}
return(null);
}
/*
* Determine if two mailboxes are equal.
*
* @return true if both Objects are mailboxes with the same
* identifying {@link Pid pids}.
**/
public override bool Equals(System.Object o)
{
if (!(o is OtpMbox))
{
return(false);
}
OtpMbox m = (OtpMbox)o;
return(m._self.Equals(this._self));
}
/*look up a mailbox based on its pid. If the mailbox has gone out
* of scope we also remove the reference from the hashtable so we
* don't find it again.
*/
public virtual OtpMbox get(Erlang.Pid pid)
{
WeakReference wr = (WeakReference)byPid[pid];
if (wr != null)
{
OtpMbox m = (OtpMbox)wr.Target;
if (m != null)
{
return(m);
}
byPid.Remove(pid);
}
return(null);
}
/*look up a mailbox based on its name. If the mailbox has gone out
* of scope we also remove the reference from the hashtable so we
* don't find it again.
*/
public virtual OtpMbox get(System.String name)
{
WeakReference wr = (WeakReference)byName[name];
if (wr != null)
{
OtpMbox m = (OtpMbox)wr.Target;
if (m != null)
{
return(m);
}
byName.Remove(name);
}
return(null);
}
public virtual OtpMbox create(System.String name)
{
OtpMbox m = null;
lock (byName)
{
if (get(name) != null)
{
return(null);
}
Erlang.Pid pid = enclosingInstance.createPid();
m = new OtpMbox(enclosingInstance, pid, name);
byPid[pid] = new WeakReference(m);
byName[name] = new WeakReference(m);
}
return(m);
}
/*create the outgoing ping message */
private Erlang.Tuple getPingTuple(OtpMbox mbox)
{
Erlang.Object[] ping = new Erlang.Object[3];
Erlang.Object[] pid = new Erlang.Object[2];
Erlang.Object[] _node = new Erlang.Object[2];
pid[0] = mbox.self();
pid[1] = createRef();
_node[0] = new Erlang.Atom("is_auth");
_node[1] = new Erlang.Atom(node());
ping[0] = new Erlang.Atom("$gen_call");
ping[1] = new Erlang.Tuple(pid);
ping[2] = new Erlang.Tuple(_node);
return(new Erlang.Tuple(ping));
}
/*
* OtpCookedConnection delivers messages here
* return true if message was delivered successfully, or false otherwise.
*/
internal virtual bool deliver(OtpMsg m)
{
OtpMbox mbox = null;
try
{
OtpMsg.Tag t = m.type();
if (t == OtpMsg.Tag.regSendTag)
{
System.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 (System.Exception)
{
return(false);
}
return(true);
}
public virtual bool register(System.String name, OtpMbox mbox)
{
if (name == null)
{
if (mbox.name != null)
{
byName.Remove(mbox.name);
mbox.name = null;
}
}
else
{
lock (byName)
{
if (get(name) != null)
{
return(false);
}
byName[name] = new WeakReference(mbox);
mbox.name = name;
}
}
return(true);
}
private void SendDo(OtpMbox mbox, Erlang.Object code)
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "servant", "process_confirmation",
new Otp.Erlang.List(code));
WriteLine("Do reply: {0}", reply);
}
/*
* Close the specified mailbox.
*
* @param the mailbox to close.
*
* <p> After this operation, the mailbox will no longer be able to
* receive messages. Any delivered but as yet unretrieved messages
* can still be retrieved however. </p>
*
* <p> If there are links from the mailbox to other {@link
* OtpErlangPid pids}, they will be broken when this method is
* called and exit signals will be sent. </p>
*
**/
public virtual void closeMbox(OtpMbox mbox)
{
if (mbox != null)
{
mboxes.remove(mbox);
mbox.name = null;
mbox.breakLinks("normal");
}
}
public virtual void remove(OtpMbox mbox)
{
byPid.Remove(mbox._self);
if (mbox.name != null)
byName.Remove(mbox.name);
}
/*create the outgoing ping message */
private Erlang.Tuple getPingTuple(OtpMbox mbox)
{
Erlang.Object[] ping = new Erlang.Object[3];
Erlang.Object[] pid = new Erlang.Object[2];
Erlang.Object[] _node = new Erlang.Object[2];
pid[0] = mbox.self();
pid[1] = createRef();
_node[0] = new Erlang.Atom("is_auth");
_node[1] = new Erlang.Atom(node());
ping[0] = new Erlang.Atom("$gen_call");
ping[1] = new Erlang.Tuple(pid);
ping[2] = new Erlang.Tuple(_node);
return new Erlang.Tuple(ping);
}
/*
* <p> Register or remove a name for the given mailbox. Registering
* a name for a mailbox enables others to send messages without
* knowing the {@link OtpErlangPid pid} of the mailbox. A mailbox
* can have at most one name; if the mailbox already had a name,
* calling this method will supercede that name. </p>
*
* @param name the name to register for the mailbox. Specify null to
* unregister the existing name from this mailbox.
*
* @param mbox the mailbox to associate with the name.
*
* @return true if the name was available, or false otherwise.
**/
public virtual bool registerName(System.String name, OtpMbox mbox)
{
return(mboxes.register(name, mbox));
}
private void GetList(OtpMbox mbox, Action<IEnumerable<Tuple<String, object>>> handler)
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "servant", "get_confirmations",
new Otp.Erlang.List());
Erlang.Object okPat = Erlang.Object.Format("{ok, List}");
Erlang.Object itemPat = Erlang.Object.Format("{Text,Code}");
Erlang.VarBind binding;
if (okPat.match(reply, (binding = new Otp.Erlang.VarBind())))
{
Erlang.List list = binding.find("List") as Erlang.List;
handler(ListToMenuItems(list));
}
else
{
WriteLine("Bad reply on getList {0}", reply.ToString());
}
}
public virtual OtpMbox create(System.String name)
{
OtpMbox m = null;
lock(byName)
{
if (get(name) != null)
return null;
Erlang.Pid pid = enclosingInstance.createPid();
m = new OtpMbox(enclosingInstance, pid, name);
byPid[pid] = new WeakReference(m);
byName[name] = new WeakReference(m);
}
return m;
}
public virtual OtpMbox create()
{
Erlang.Pid pid = enclosingInstance.createPid();
OtpMbox m = new OtpMbox(enclosingInstance, pid);
byPid[pid] = new WeakReference(m);
return m;
}
static public void Main(String[] args)
{
OtpTrace.TraceEvent("Otp test...");
if (args.Length < 1)
{
OtpTrace.TraceEvent("Usage: Otp sname\n where sname is" +
"the short name of the Erlang node");
return;
}
String host = System.Net.Dns.GetHostName();
String remote = args[0] + "@" + host;
OtpNode node = new OtpNode("q@" + host);
OtpTrace.TraceEvent("This node is called {0} and is using cookie='{1}'.",
node.node(), node.cookie());
bool ok = false;
ok = node.ping(remote, 1000);
if (ok)
{
OtpTrace.TraceEvent(" successfully pinged node " + remote + "\n");
}
else
{
OtpTrace.TraceEvent(" could not ping node " + remote + "\n");
}
OtpMbox mbox = null;
try
{
mbox = node.createMbox();
Erlang.Object[] rpc = new Erlang.Object[2];
Erlang.Object[] call = new Erlang.Object[5];
call[0] = new Erlang.Atom("call");
call[1] = new Erlang.Atom("lists");
call[2] = new Erlang.Atom("reverse");
call[3] = new Erlang.List(new Erlang.List("Hello Erlang world!"));
call[4] = mbox.self();
rpc[0] = mbox.self();
rpc[1] = new Erlang.Tuple(call);
Erlang.Tuple rpcTuple = new Erlang.Tuple(rpc);
OtpTrace.TraceEvent("=> " + rpcTuple.ToString());
mbox.send("rex", remote, rpcTuple);
Erlang.Object reply = mbox.receive(1000);
OtpTrace.TraceEvent("<= " + reply.ToString());
}
catch (System.Exception)
{
}
finally
{
node.closeMbox(mbox);
}
node.close();
}
/*
* <p> Register or remove a name for the given mailbox. Registering
* a name for a mailbox enables others to send messages without
* knowing the {@link OtpErlangPid pid} of the mailbox. A mailbox
* can have at most one name; if the mailbox already had a name,
* calling this method will supercede that name. </p>
*
* @param name the name to register for the mailbox. Specify null to
* unregister the existing name from this mailbox.
*
* @param mbox the mailbox to associate with the name.
*
* @return true if the name was available, or false otherwise.
**/
public virtual bool registerName(System.String name, OtpMbox mbox)
{
return mboxes.register(name, mbox);
}
static public void Main(String[] args)
{
System.Console.Out.WriteLine("Otp test...");
string cookie = OtpNode.defaultCookie;
string host = System.Net.Dns.GetHostName();
string remote = (args[0].IndexOf('@') < 0) ? args[0] + "@" + host : args[0];
string nodename = Environment.UserName + "123@" + host;
AbstractConnection.traceLevel = OtpTrace.Type.sendThreshold;
if (args.Length < 1)
{
System.Console.Out.WriteLine(
"Usage: {0} remotenode [cookie] [-notrace]\n" +
" nodename - is the name of the remote Erlang node\n" +
" cookie - is the optional cookie string to use\n" +
" -name - this node name\n" +
" -wire - wire-level tracing\n" +
" -notrace - disable debug trace\n",
Environment.GetCommandLineArgs()[0]);
return;
}
else if (args.Length > 1 && args[1][0] != '-')
{
cookie = args[1].ToString();
}
for (int i = 0; i < args.Length; i++)
{
if (args[i].Equals("-wire"))
{
AbstractConnection.traceLevel = OtpTrace.Type.wireThreshold;
}
else if (args[i].Equals("-notrace"))
{
AbstractConnection.traceLevel = OtpTrace.Type.defaultLevel;
}
else if (args[i].Equals("-name") && i + 1 < args.Length)
{
nodename = args[i++ + 1];
if (nodename.IndexOf('@') < 0)
{
nodename += '@' + host;
}
}
}
OtpNode node = new OtpNode(false, nodename, cookie, true);
System.Console.Out.WriteLine("This node is called {0} and is using cookie='{1}'.",
node.node(), node.cookie());
OtpCookedConnection.ConnectTimeout = 2000;
OtpCookedConnection conn = node.connection(remote);
conn.OnReadWrite += OnReadWrite;
if (conn == null)
{
Console.WriteLine("Can't connect to node " + remote);
return;
}
// If using short names or IP address as the host part of the node name,
// get the short name of the peer.
remote = conn.peer.node();
System.Console.Out.WriteLine(" successfully connected to node " + remote + "\n");
OtpMbox mbox = null;
try
{
mbox = node.createMbox();
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "lists", "reverse", new Otp.Erlang.List("Abcdef!"));
System.Console.Out.WriteLine("<= [REPLY1]:" + (reply == null ? "null" : reply.ToString()));
}
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "global", "register_name",
new Otp.Erlang.List(new Otp.Erlang.Atom("me"), mbox.self()));
System.Console.Out.WriteLine("<= [REPLY2]:" + (reply == null ? "null" : reply.ToString()));
}
{
Otp.Erlang.Object reply = mbox.rpcCall(remote, "global", "register_name", new Otp.Erlang.List(new Otp.Erlang.Atom("me"), mbox.self()), 5000);
System.Console.Out.WriteLine("<= [REPLY3]:" + (reply == null ? "null" : reply.ToString()));
}
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "io", "format",
new Otp.Erlang.List(
"Test: ~w -> ~w\n",
new Otp.Erlang.List(mbox.self(), new Otp.Erlang.Atom("ok"))
));
System.Console.Out.WriteLine("<= [REPLY4]:" + (reply == null ? "null" : reply.ToString()));
}
while (true)
{
Otp.Erlang.Object msg = mbox.receive();
if (msg is Otp.Erlang.Tuple)
{
Otp.Erlang.Tuple m = msg as Otp.Erlang.Tuple;
if (m.arity() == 2 && m.elementAt(0) is Otp.Erlang.Pid)
{
mbox.send(m.elementAt(0) as Otp.Erlang.Pid, m.elementAt(1));
}
}
System.Console.Out.WriteLine("IN msg: " + msg.ToString() + "\n");
}
}
catch (System.Exception e)
{
System.Console.Out.WriteLine("Error: " + e.ToString());
}
finally
{
node.closeMbox(mbox);
}
node.close();
}
public virtual bool register(System.String name, OtpMbox mbox)
{
if (name == null)
{
if (mbox.name != null)
{
byName.Remove(mbox.name);
mbox.name = null;
}
}
else
{
lock(byName)
{
if (get(name) != null)
return false;
byName[name] = new WeakReference(mbox);
mbox.name = name;
}
}
return true;
}
static public void Main(String[] args)
{
System.Console.Out.WriteLine("Otp test...");
if (args.Length < 1)
{
System.Console.Out.WriteLine("Usage: Otp sname\n where sname is" +
"the short name of the Erlang node");
return;
}
OtpNode.useShortNames = true;
String host = System.Net.Dns.GetHostName();
String user = Environment.UserName;
OtpNode node = new OtpNode(user + "@" + host);
String remote = (args[0].Contains("@")) ? args[0] : remote = args[0] + "@" + host;
OtpMbox mbox = null;
System.Console.Out.WriteLine("This node is: {0} (cookie='{1}'). Remote: {2}",
node.node(), node.cookie(), remote);
//bool ok = node.ping(remote, 1000*300);
OtpCookedConnection conn = node.getConnection(remote);
try
{
if (conn != null)
{
System.Console.Out.WriteLine(" successfully pinged node " + remote + "\n");
}
else
{
throw new System.Exception("Could not ping node: " + remote);
}
conn.traceLevel = 1;
mbox = node.createMbox();
mbox.registerName("server");
mbox.sendRPC(conn.peer.node(), "lists", "reverse", new Erlang.List(new Erlang.String("Hello world!")));
Erlang.Object reply = mbox.receiveRPC(5000);
System.Console.Out.WriteLine("<= " + reply.ToString());
{
Erlang.List rpcArgs = new Erlang.List(
new Erlang.Object[] {
mbox.self(),
new Erlang.Tuple(
new Erlang.Object[] {
new Erlang.Atom("table"), new Erlang.Atom("test"), new Erlang.Atom("simple")
}
)
}
);
mbox.sendRPC(conn.peer.node(), "mnesia_subscr", "subscribe", rpcArgs);
reply = mbox.receiveRPC(5000);
System.Console.Out.WriteLine("<= " + reply.ToString());
}
while (true)
{
Erlang.Object msg = mbox.receive();
System.Console.Out.WriteLine("IN msg: " + msg.ToString() + "\n");
}
}
catch (System.Exception e)
{
System.Console.Out.WriteLine("Error: " + e.ToString());
}
finally
{
node.closeMbox(mbox);
}
node.close();
}
static public void Main(String[] args)
{
{
Erlang.Object obj1 = Erlang.Object.Format("{a, b, 10, 2.0}");
Erlang.Object obj2 = Erlang.Object.Format("{a, [b, 1, 2.0, \"abc\"], {1, 2}}");
}
System.Console.Out.WriteLine("Otp test...");
string cookie = OtpNode.defaultCookie;
AbstractConnection.traceLevel = OtpTrace.Type.sendThreshold;
if (args.Length < 1)
{
System.Console.Out.WriteLine(
"Usage: {0} nodename [cookie] [-notrace]\n" +
" nodename - is the name of the remote Erlang node\n" +
" cookie - is the optional cookie string to use\n" +
" -notrace - disable debug trace\n",
Environment.GetCommandLineArgs()[0]);
return;
}
else if (args.Length > 1)
{
cookie = args[1].ToString();
}
for (int i = 0; i < args.Length; i++)
{
if (args[i].Equals("-notrace"))
{
AbstractConnection.traceLevel = OtpTrace.Type.defaultLevel;
break;
}
}
String host = System.Net.Dns.GetHostName();
String remote = (args[0].IndexOf('@') < 0) ? args[0] + "@" + host : args[0];
OtpNode node = new OtpNode(false, Environment.UserName + "123@" + host, cookie, true);
System.Console.Out.WriteLine("This node is called {0} and is using cookie='{1}'.",
node.node(), node.cookie());
bool ok = node.ping(remote, 1000);
if (!ok)
{
Console.WriteLine("Can't connect to node " + remote);
return;
}
// If using short names, get the short name of the peer.
remote = node.connection(remote).peer.node();
if (remote != null)
{
System.Console.Out.WriteLine(" successfully pinged node " + remote + "\n");
}
else
{
System.Console.Out.WriteLine(" could not ping node " + remote + "\n");
}
OtpMbox mbox = null;
try
{
mbox = node.createMbox();
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "lists", "reverse", new Otp.Erlang.List("Abcdef!"));
System.Console.Out.WriteLine("<= [REPLY1]:" + (reply == null ? "null" : reply.ToString()));
}
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "global", "register_name",
new Otp.Erlang.List(new Otp.Erlang.Atom("me"), mbox.self()));
System.Console.Out.WriteLine("<= [REPLY2]:" + (reply == null ? "null" : reply.ToString()));
}
{
Otp.Erlang.Object reply = mbox.rpcCall(remote, "global", "register_name", new Otp.Erlang.List(new Otp.Erlang.Atom("me"), mbox.self()), 5000);
System.Console.Out.WriteLine("<= [REPLY3]:" + (reply == null ? "null" : reply.ToString()));
}
{
Otp.Erlang.Object reply = mbox.rpcCall(
remote, "io", "format",
new Otp.Erlang.List(
"Test: ~w -> ~w\n",
new Otp.Erlang.List(mbox.self(), new Otp.Erlang.Atom("ok"))
));
System.Console.Out.WriteLine("<= [REPLY4]:" + (reply == null ? "null" : reply.ToString()));
}
while (true)
{
Otp.Erlang.Object msg = mbox.receive();
if (msg is Otp.Erlang.Tuple)
{
Otp.Erlang.Tuple m = msg as Otp.Erlang.Tuple;
if (m.arity() == 2 && m.elementAt(0) is Otp.Erlang.Pid)
{
mbox.send(m.elementAt(0) as Otp.Erlang.Pid, m.elementAt(1));
}
}
System.Console.Out.WriteLine("IN msg: " + msg.ToString() + "\n");
}
}
catch (System.Exception e)
{
System.Console.Out.WriteLine("Error: " + e.ToString());
}
finally
{
node.closeMbox(mbox);
}
node.close();
}