// Ask epmd to close his end of the connection.
// Caller should close his epmd socket as well.
// This method is pretty forgiving...
/*
* Unregister from Epmd. Other nodes wishing to connect will no
* longer be able to.
*
* <p> This method does not report any failures.
**/
public static void unPublishPort(OtpLocalNode node)
{
TcpClient s = null;
try
{
s = new TcpClient(System.Net.Dns.GetHostName(), epmdPort);
OtpOutputStream obuf = new OtpOutputStream();
obuf.write2BE(node.getAlive().Length + 1);
obuf.write1(stopReq);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte)tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
obuf.writeTo((System.IO.Stream)s.GetStream());
// don't even wait for a response (is there one?)
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("-> UNPUBLISH " + node + " port=" + node.port());
OtpTrace.TraceEvent("<- OK (assumed)");
}
}
catch (System.Exception)
{
/*ignore all failures */
}
finally
{
try
{
if (s != null)
{
s.Close();
}
}
catch (System.IO.IOException)
{
/*ignore close failure */
}
s = null;
}
}
private static int r4_lookupPort(AbstractNode node)
{
int port = 0;
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new System.Net.Sockets.TcpClient(node.host(), epmdPort);
// build and send epmd request
// length[2], tag[1], alivename[n] (length = n+1)
obuf.write2BE(node.getAlive().Length + 1);
obuf.write1(port4req);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte)tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
// send request
obuf.writeTo((System.IO.Stream)s.GetStream());
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("-> LOOKUP (r4) " + node);
}
// receive and decode reply
// resptag[1], result[1], port[2], ntype[1], proto[1],
// disthigh[2], distlow[2], nlen[2], alivename[n],
// elen[2], edata[m]
byte[] tmpbuf = new byte[100];
int n = s.GetStream().Read(tmpbuf, 0, 100);
if (n < 0)
{
// this was an r3 node => not a failure (yet)
if (s != null)
{
s.Close();
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
int response = ibuf.read1();
if (response == port4resp)
{
int result = ibuf.read1();
if (result == 0)
{
port = ibuf.read2BE();
node.ntype = ibuf.read1();
node._proto = ibuf.read1();
node._distHigh = ibuf.read2BE();
node._distLow = ibuf.read2BE();
// ignore rest of fields
}
}
}
catch (System.IO.IOException)
{
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (no response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
catch (Erlang.Exception)
{
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (invalid response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
catch (System.Net.Sockets.SocketException)
{
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (no epmd response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
finally
{
try
{
if (s != null)
{
s.Close();
}
}
catch (System.IO.IOException)
{
/*ignore close errors */
}
s = null;
}
if (traceLevel >= traceThreshold)
{
if (port == 0)
{
OtpTrace.TraceEvent("<- NOT FOUND");
}
else
{
OtpTrace.TraceEvent("<- PORT " + port);
}
}
return(port);
}
private static int r3_lookupPort(AbstractNode node)
{
int port = 0;
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new System.Net.Sockets.TcpClient(node.host(), epmdPort);
// build and send epmd request
// length[2], tag[1], alivename[n] (length = n+1)
obuf.write2BE(node.getAlive().Length + 1);
obuf.write1(port3req);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte)tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
// send request
obuf.writeTo((System.IO.Stream)s.GetStream());
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("-> LOOKUP (r3) " + node);
}
// receive and decode reply
byte[] tmpbuf = new byte[100];
s.GetStream().Read(tmpbuf, 0, 100);
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
port = ibuf.read2BE();
}
catch (System.IO.IOException)
{
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (no response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
catch (Erlang.Exception)
{
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (invalid response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
finally
{
try
{
if (s != null)
{
s.Close();
}
}
catch (System.IO.IOException)
{
/*ignore close errors */
}
s = null;
}
if (traceLevel >= traceThreshold)
{
if (port == 0)
{
OtpTrace.TraceEvent("<- NOT FOUND");
}
else
{
OtpTrace.TraceEvent("<- PORT " + port);
}
}
return(port);
}
// used by send and send_reg (message types with payload)
protected internal virtual void do_send(OtpOutputStream header, OtpOutputStream payload)
{
lock(this)
{
try
{
if (traceLevel >= OtpTrace.Type.sendThreshold)
{
// Need to decode header and output buffer to show trace message!
// First make OtpInputStream, then decode.
try
{
Erlang.Object h = (header.getOtpInputStream(5)).read_any();
OtpTrace.TraceEvent("-> " + headerType(h) + " " + h.ToString());
Erlang.Object o = (payload.getOtpInputStream(0)).read_any();
OtpTrace.TraceEvent(" " + o.ToString());
o = null;
}
catch (Erlang.Exception e)
{
OtpTrace.TraceEvent(" " + "can't decode output buffer:" + e);
}
}
header.writeTo((System.IO.Stream) socket.GetStream());
payload.writeTo((System.IO.Stream) socket.GetStream());
}
catch (System.Net.Sockets.SocketException e)
{
close();
throw e;
}
catch (System.IO.IOException e)
{
close();
throw e;
}
}
}
// used by the other message types
protected internal virtual void do_send(OtpOutputStream header)
{
lock(this)
{
try
{
if (traceLevel >= OtpTrace.Type.ctrlThreshold)
{
try
{
Erlang.Object h = (header.getOtpInputStream(5)).read_any();
OtpTrace.TraceEvent("-> " + headerType(h) + " " + h);
}
catch (Erlang.Exception e)
{
OtpTrace.TraceEvent(" " + "can't decode output buffer: " + e);
}
}
header.writeTo((System.IO.Stream) socket.GetStream());
}
catch (System.Net.Sockets.SocketException e)
{
close();
throw e;
}
catch (System.IO.IOException e)
{
close();
throw e;
}
}
}
protected internal virtual void sendChallengeReply(int challenge, byte[] digest)
{
OtpOutputStream obuf = new OtpOutputStream();
obuf.write2BE(21);
obuf.write1(ChallengeReply);
obuf.write4BE(challenge);
obuf.write(digest);
obuf.writeTo((System.IO.Stream) socket.GetStream());
if (traceLevel >= handshakeThreshold)
{
System.Console.Out.WriteLine("-> " + "HANDSHAKE sendChallengeReply" + " challenge=" + challenge + " digest=" + hex(digest) + " local=" + self);
}
}
protected internal virtual void sendStatus(System.String status)
{
OtpOutputStream obuf = new OtpOutputStream();
obuf.write2BE(status.Length + 1);
obuf.write1(ChallengeStatus);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = status;
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.write(tmpBytes);
obuf.writeTo((System.IO.Stream) socket.GetStream());
if (traceLevel >= OtpTrace.Type.handshakeThreshold)
{
OtpTrace.TraceEvent("-> " + "HANDSHAKE sendStatus" + " status=" + status + " local=" + self);
}
}
// used by send and send_reg (message types with payload)
protected internal virtual void do_send(OtpOutputStream header, OtpOutputStream payload)
{
lock(this)
{
try
{
if (traceLevel >= OtpTrace.Type.sendThreshold)
{
// Need to decode header and output buffer to show trace message!
// First make OtpInputStream, then decode.
try
{
if (traceLevel >= OtpTrace.Type.wireThreshold)
{
Erlang.Object h = (header.getOtpInputStream(5)).read_any();
Erlang.Binary hb = header.ToBinary();
Erlang.Binary ob = payload.ToBinary();
System.Text.StringBuilder s = new System.Text.StringBuilder();
s.AppendFormat("-> {0} {1} (header_sz={2}, msg_sz={3})\n" +
" Header: {4}\n" +
" Msg: {5}", headerType(h), h.ToString(), hb.size(), ob.size(),
hb.ToBinaryString(), ob.ToBinaryString());
OtpTrace.TraceEvent(s.ToString());
h = null;
hb = null;
ob = null;
}
else
{
Erlang.Object h = (header.getOtpInputStream(5)).read_any();
OtpTrace.TraceEvent("-> " + headerType(h) + " " + h.ToString());
Erlang.Object o = (payload.getOtpInputStream(0)).read_any();
OtpTrace.TraceEvent(" " + o.ToString());
h = null;
o = null;
}
}
catch (Erlang.Exception e)
{
OtpTrace.TraceEvent(" " + "can't decode output buffer:" + e);
}
}
header.writeTo((System.IO.Stream) socket.GetStream());
payload.writeTo((System.IO.Stream) socket.GetStream());
long written = header.count() + payload.count();
sentBytes += written;
sentMsgs++;
if (onReadWrite != null)
onReadWrite(this, Operation.Write, written, sentBytes, sentMsgs);
}
catch (System.Exception e)
{
close();
throw e;
}
}
}
protected internal virtual void sendChallenge(int dist, int flags, int challenge)
{
OtpOutputStream obuf = new OtpOutputStream();
System.String str = self.node();
obuf.write2BE(str.Length + 11); // 11 bytes + nodename
obuf.write1(AbstractNode.NTYPE_R6);
obuf.write2BE(dist);
obuf.write4BE(flags);
obuf.write4BE(challenge);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = str;
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.write(tmpBytes);
obuf.writeTo((System.IO.Stream) socket.GetStream());
if (traceLevel >= OtpTrace.Type.handshakeThreshold)
{
OtpTrace.TraceEvent("-> " + "HANDSHAKE sendChallenge" + " flags=" + flags + " dist=" + dist + " challenge=" + challenge + " local=" + self);
}
}
private static int r4_lookupPort(AbstractNode node)
{
int port = 0;
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new System.Net.Sockets.TcpClient(node.host(), epmdPort);
// build and send epmd request
// length[2], tag[1], alivename[n] (length = n+1)
obuf.write2BE(node.getAlive().Length + 1);
obuf.write1(port4req);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
// send request
obuf.writeTo((System.IO.Stream) s.GetStream());
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("-> LOOKUP (r4) " + node);
// receive and decode reply
// resptag[1], result[1], port[2], ntype[1], proto[1],
// disthigh[2], distlow[2], nlen[2], alivename[n],
// elen[2], edata[m]
byte[] tmpbuf = new byte[100];
int n = s.GetStream().Read(tmpbuf, 0, 100);
if (n < 0)
{
// this was an r3 node => not a failure (yet)
if (s != null)
s.Close();
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
int response = ibuf.read1();
if (response == port4resp)
{
int result = ibuf.read1();
if (result == 0)
{
port = ibuf.read2BE();
node.ntype = ibuf.read1();
node._proto = ibuf.read1();
node._distHigh = ibuf.read2BE();
node._distLow = ibuf.read2BE();
// ignore rest of fields
}
}
}
catch (System.IO.IOException)
{
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- (no response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
catch (Erlang.DecodeException)
{
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- (invalid response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
finally
{
try
{
if (s != null)
s.Close();
}
catch (System.IO.IOException)
{
/*ignore close errors */
}
s = null;
}
if (traceLevel >= traceThreshold)
{
if (port == 0)
System.Console.Out.WriteLine("<- NOT FOUND");
else
System.Console.Out.WriteLine("<- PORT " + port);
}
return port;
}
/*this function will get an exception if it tries to talk to an r3
* epmd, or if something else happens that it cannot forsee. In both
* cases we return an exception (and the caller should try again, using
* the r3 protocol).
* If we manage to successfully communicate with an r4 epmd, we return
* either the socket, or null, depending on the result.
*/
private static System.Net.Sockets.TcpClient r4_publish(OtpLocalNode node)
{
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new TcpClient(System.Net.Dns.GetHostName(), epmdPort);
obuf.write2BE(node.getAlive().Length + 13);
obuf.write1(publish4req);
obuf.write2BE(node.port());
obuf.write1(node.type());
obuf.write1(node.proto());
obuf.write2BE(node.distHigh());
obuf.write2BE(node.distLow());
obuf.write2BE(node.getAlive().Length);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
obuf.write2BE(0); // No extra
// send request
obuf.writeTo((System.IO.Stream) s.GetStream());
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("-> PUBLISH (r4) " + node + " port=" + node.port());
// get reply
byte[] tmpbuf = new byte[100];
int n = s.GetStream().Read(tmpbuf, 0, 100);
if (n < 0)
{
// this was an r3 node => not a failure (yet)
if (s != null)
s.Close();
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
int response = ibuf.read1();
if (response == publish4resp)
{
int result = ibuf.read1();
if (result == 0)
{
node._creation = ibuf.read2BE();
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- OK");
return s; // success
}
}
}
catch (System.IO.IOException)
{
// epmd closed the connection = fail
if (s != null)
s.Close();
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- (no response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
catch (Erlang.DecodeException)
{
if (s != null)
s.Close();
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- (invalid response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
if (s != null)
s.Close();
return null;
}
private static int r3_lookupPort(AbstractNode node)
{
int port = 0;
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new System.Net.Sockets.TcpClient(node.host(), epmdPort);
// build and send epmd request
// length[2], tag[1], alivename[n] (length = n+1)
obuf.write2BE(node.getAlive().Length + 1);
obuf.write1(port3req);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
// send request
obuf.writeTo((System.IO.Stream) s.GetStream());
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("-> LOOKUP (r3) " + node);
// receive and decode reply
byte[] tmpbuf = new byte[100];
s.GetStream().Read(tmpbuf, 0, 100);
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
port = ibuf.read2BE();
}
catch (System.IO.IOException)
{
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- (no response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
catch (Erlang.DecodeException)
{
if (traceLevel >= traceThreshold)
System.Console.Out.WriteLine("<- (invalid response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when looking up " + node.getAlive());
}
finally
{
try
{
if (s != null)
s.Close();
}
catch (System.IO.IOException)
{
/*ignore close errors */
}
s = null;
}
if (traceLevel >= traceThreshold)
{
if (port == 0)
System.Console.Out.WriteLine("<- NOT FOUND");
else
System.Console.Out.WriteLine("<- PORT " + port);
}
return port;
}
// Ask epmd to close his end of the connection.
// Caller should close his epmd socket as well.
// This method is pretty forgiving...
/*
* Unregister from Epmd. Other nodes wishing to connect will no
* longer be able to.
*
* <p> This method does not report any failures.
**/
public static void unPublishPort(OtpLocalNode node)
{
TcpClient s = null;
try
{
s = new TcpClient(System.Net.Dns.GetHostName(), epmdPort);
OtpOutputStream obuf = new OtpOutputStream();
obuf.write2BE(node.getAlive().Length + 1);
obuf.write1(stopReq);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
obuf.writeTo((System.IO.Stream) s.GetStream());
// don't even wait for a response (is there one?)
if (traceLevel >= traceThreshold)
{
System.Console.Out.WriteLine("-> UNPUBLISH " + node + " port=" + node.port());
System.Console.Out.WriteLine("<- OK (assumed)");
}
}
catch (System.Exception)
{
/*ignore all failures */
}
finally
{
try
{
if (s != null)
s.Close();
}
catch (System.IO.IOException)
{
/*ignore close failure */
}
s = null;
}
}
// used by the other message types
protected internal virtual void do_send(OtpOutputStream header)
{
lock(this)
{
try
{
if (traceLevel >= ctrlThreshold)
{
try
{
Erlang.Object h = (header.getOtpInputStream(5)).read_any();
System.Console.Out.WriteLine("-> " + headerType(h) + " " + h);
}
catch (Erlang.DecodeException e)
{
System.Console.Out.WriteLine(" " + "can't decode output buffer: " + e);
}
}
header.writeTo((System.IO.Stream) socket.GetStream());
}
catch (System.IO.IOException e)
{
close();
throw e;
}
}
}
private static System.Net.Sockets.TcpClient r3_publish(OtpLocalNode node)
{
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new System.Net.Sockets.TcpClient(System.Net.Dns.GetHostName(), epmdPort);
obuf.write2BE(node.getAlive().Length + 3);
obuf.write1(publish3req);
obuf.write2BE(node.port());
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte)tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
// send request
obuf.writeTo((System.IO.Stream)s.GetStream());
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("-> PUBLISH (r3) " + node + " port=" + node.port());
}
byte[] tmpbuf = new byte[100];
int n = s.GetStream().Read(tmpbuf, 0, 100);
if (n < 0)
{
if (s != null)
{
s.Close();
}
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (no response)");
}
return(null);
}
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
if (ibuf.read1() == publish3ok)
{
node._creation = ibuf.read2BE();
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- OK");
}
return(s); // success - don't close socket
}
}
catch (System.IO.IOException)
{
// epmd closed the connection = fail
if (s != null)
{
s.Close();
}
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (no response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
catch (Erlang.Exception)
{
if (s != null)
{
s.Close();
}
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- (invalid response)");
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
if (s != null)
{
s.Close();
}
return(null); // failure
}
protected internal virtual void sendChallengeAck(byte[] digest)
{
OtpOutputStream obuf = new OtpOutputStream();
obuf.write2BE(17);
obuf.write1(ChallengeAck);
obuf.write(digest);
obuf.writeTo((System.IO.Stream) socket.GetStream());
if (traceLevel >= OtpTrace.Type.handshakeThreshold)
{
OtpTrace.TraceEvent("-> " + "HANDSHAKE sendChallengeAck" + " digest=" + hex(digest) + " local=" + self);
}
}
/*this function will get an exception if it tries to talk to an r3
* epmd, or if something else happens that it cannot forsee. In both
* cases we return an exception (and the caller should try again, using
* the r3 protocol).
* If we manage to successfully communicate with an r4 epmd, we return
* either the socket, or null, depending on the result.
*/
private static System.Net.Sockets.TcpClient r4_publish(OtpLocalNode node)
{
System.Net.Sockets.TcpClient s = null;
System.Exception error = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new TcpClient(System.Net.Dns.GetHostName(), epmdPort);
obuf.write2BE(node.getAlive().Length + 13);
obuf.write1(publish4req);
obuf.write2BE(node.port());
obuf.write1(node.type());
obuf.write1(node.proto());
obuf.write2BE(node.distHigh());
obuf.write2BE(node.distLow());
obuf.write2BE(node.getAlive().Length);
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte)tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
obuf.write2BE(0); // No extra
// send request
obuf.writeTo((System.IO.Stream)s.GetStream());
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("-> PUBLISH (r4) " + node + " port=" + node.port());
}
// get reply
byte[] tmpbuf = new byte[100];
int n = s.GetStream().Read(tmpbuf, 0, 100);
if (n < 0)
{
// this was an r3 node => not a failure (yet)
if (s != null)
{
s.Close();
}
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
int response = ibuf.read1();
if (response == publish4resp)
{
int result = ibuf.read1();
if (result == 0)
{
node._creation = ibuf.read2BE();
if (traceLevel >= traceThreshold)
{
OtpTrace.TraceEvent("<- OK");
}
return(s); // success
}
}
}
catch (System.IO.IOException e)
{
error = e;
}
catch (Erlang.Exception e)
{
error = e;
}
catch (System.Net.Sockets.SocketException e)
{
error = e;
}
if (error == null)
{
return(s);
}
else
{
// epmd closed the connection = fail
if (s != null)
{
s.Close();
}
if (traceLevel >= traceThreshold)
{
System.Console.Out.WriteLine("<- (no response)");
}
string err = "Nameserver not responding on " + node.host() + " when publishing " + node.getAlive();
node.epmdFailedConnAttempt(node.node(), err);
if (traceLevel >= traceThreshold)
{
System.Console.Out.WriteLine("Failed to connect to empd daemon!");
}
if (!OtpLocalNode.ignoreLocalEpmdConnectErrors)
{
throw new System.Exception(err);
}
node._creation = 0;
return(null);
}
}
private static System.Net.Sockets.TcpClient r3_publish(OtpLocalNode node)
{
System.Net.Sockets.TcpClient s = null;
try
{
OtpOutputStream obuf = new OtpOutputStream();
s = new System.Net.Sockets.TcpClient(System.Net.Dns.GetHostName(), epmdPort);
obuf.write2BE(node.getAlive().Length + 3);
obuf.write1(publish3req);
obuf.write2BE(node.port());
//UPGRADE_NOTE: This code will be optimized in the future;
byte[] tmpBytes;
int i;
string tmpStr;
tmpStr = node.getAlive();
tmpBytes = new byte[tmpStr.Length];
i = 0;
while (i < tmpStr.Length)
{
tmpBytes[i] = (byte) tmpStr[i];
i++;
}
obuf.writeN(tmpBytes);
// send request
obuf.writeTo((System.IO.Stream) s.GetStream());
if (traceLevel >= traceThreshold)
OtpTrace.TraceEvent("-> PUBLISH (r3) " + node + " port=" + node.port());
byte[] tmpbuf = new byte[100];
int n = s.GetStream().Read(tmpbuf, 0, 100);
if (n < 0)
{
if (s != null)
s.Close();
if (traceLevel >= traceThreshold)
OtpTrace.TraceEvent("<- (no response)");
return null;
}
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
if (ibuf.read1() == publish3ok)
{
node._creation = ibuf.read2BE();
if (traceLevel >= traceThreshold)
OtpTrace.TraceEvent("<- OK");
return s; // success - don't close socket
}
}
catch (System.IO.IOException)
{
// epmd closed the connection = fail
if (s != null)
s.Close();
if (traceLevel >= traceThreshold)
OtpTrace.TraceEvent("<- (no response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
catch (Erlang.Exception)
{
if (s != null)
s.Close();
if (traceLevel >= traceThreshold)
OtpTrace.TraceEvent("<- (invalid response)");
throw new System.IO.IOException("Nameserver not responding on " + node.host() + " when publishing " + node.getAlive());
}
if (s != null)
s.Close();
return null; // failure
}