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
}
/*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 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);
}
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);
}
protected internal virtual void recvName(OtpPeer peer)
{
System.String hisname = "";
try
{
byte[] tmpbuf = read2BytePackage();
OtpInputStream ibuf = new OtpInputStream(tmpbuf);
byte[] tmpname;
int len = (int) (tmpbuf.Length);
peer.ntype = ibuf.read1();
if (peer.ntype != AbstractNode.NTYPE_R6)
{
throw new System.IO.IOException("Unknown remote node type");
}
peer._distLow = (peer._distHigh = ibuf.read2BE());
if (peer._distLow < 5)
{
throw new System.IO.IOException("Unknown remote node type");
}
peer.flags = ibuf.read4BE();
tmpname = new byte[len - 7];
ibuf.readN(tmpname);
char[] tmpChar;
tmpChar = new char[tmpname.Length];
tmpname.CopyTo(tmpChar, 0);
hisname = new System.String(tmpChar);
// Set the old nodetype parameter to indicate hidden/normal status
// When the old handshake is removed, the ntype should also be.
if ((peer.flags & AbstractNode.dFlagPublished) != 0)
peer.ntype = AbstractNode.NTYPE_R4_ERLANG;
else
peer.ntype = AbstractNode.NTYPE_R4_HIDDEN;
if ((peer.flags & AbstractNode.dFlagExtendedReferences) == 0)
{
throw new System.IO.IOException("Handshake failed - peer cannot handle extended references");
}
if (OtpSystem.useExtendedPidsPorts() && (peer.flags & AbstractNode.dFlagExtendedPidsPorts) == 0)
if (true && (peer.flags & AbstractNode.dFlagExtendedPidsPorts) == 0)
{
throw new System.IO.IOException("Handshake failed - peer cannot handle extended pids and ports");
}
}
catch (Erlang.Exception)
{
throw new System.IO.IOException("Handshake failed - not enough data");
}
int i = hisname.IndexOf((System.Char) '@', 0);
peer._node = hisname;
peer._alive = hisname.Substring(0, (i) - (0));
peer._host = hisname.Substring(i + 1, (hisname.Length) - (i + 1));
if (traceLevel >= OtpTrace.Type.handshakeThreshold)
{
OtpTrace.TraceEvent("<- " + "HANDSHAKE" + " ntype=" + peer.ntype + " dist=" + peer._distHigh + " remote=" + peer);
}
}
protected internal virtual int recvChallenge()
{
int challenge;
try
{
byte[] buf = read2BytePackage();
OtpInputStream ibuf = new OtpInputStream(buf);
peer.ntype = ibuf.read1();
if (peer.ntype != AbstractNode.NTYPE_R6)
{
throw new System.IO.IOException("Unexpected peer type");
}
peer._distLow = (peer._distHigh = ibuf.read2BE());
peer.flags = ibuf.read4BE();
challenge = ibuf.read4BE();
byte[] tmpname = new byte[buf.Length - 11];
ibuf.readN(tmpname);
char[] tmpChar;
tmpChar = new char[tmpname.Length];
tmpname.CopyTo(tmpChar, 0);
System.String hisname = new System.String(tmpChar);
int i = hisname.IndexOf((System.Char) '@', 0);
peer._node = hisname;
peer._alive = hisname.Substring(0, (i) - (0));
peer._host = hisname.Substring(i + 1, (hisname.Length) - (i + 1));
}
catch (Erlang.Exception)
{
throw new System.IO.IOException("Handshake failed - not enough data");
}
if (traceLevel >= OtpTrace.Type.handshakeThreshold)
{
OtpTrace.TraceEvent("<- " + "HANDSHAKE recvChallenge" + " from=" + peer._node + " challenge=" + challenge + " local=" + self);
}
return challenge;
}
protected internal virtual byte[] read2BytePackage()
{
byte[] lbuf = new byte[2];
byte[] tmpbuf;
readSock(socket, lbuf);
OtpInputStream ibuf = new OtpInputStream(lbuf);
int len = ibuf.read2BE();
tmpbuf = new byte[len];
readSock(socket, tmpbuf);
return tmpbuf;
}
/*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 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;
}
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;
}
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
}
