Erlang.NET.OtpEpmd.r4_publish C# (CSharp) Méthode

        private static TcpClient r4_publish(OtpLocalNode node)
        {
            TcpClient s = null;

            try
            {
                OtpOutputStream obuf = new OtpOutputStream();
                s = new TcpClient(node.Host, EpmdPort.get());

                obuf.write2BE(node.Alive.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.Alive.Length);
                obuf.writeN(Encoding.GetEncoding("iso-8859-1").GetBytes(node.Alive));
                obuf.write2BE(0); // No extra

                // send request
                obuf.WriteTo(s.GetStream());

                if (traceLevel >= traceThreshold)
                {
                    log.Debug("-> PUBLISH (r4) " + node + " port=" + node.Port);
                }

                // get reply
                byte[] tmpbuf = new byte[100];
                int n = s.GetStream().Read(tmpbuf, 0, tmpbuf.Length);

                if (n < 0)
                {
                    // this was an r3 node => not a failure (yet)
                    if (s != null)
                    {
                        s.Close();
                    }
                    throw new IOException("Nameserver not responding on "
                              + node.Host + " when publishing " + node.Alive);
                }

                OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);

                int response = ibuf.read1();
                if (response == publish4resp)
                {
                    int result = ibuf.read1();
                    if (result == 0)
                    {
                        node.Creation = ibuf.read2BE();
                        if (traceLevel >= traceThreshold)
                        {
                            log.Debug("<- OK");
                        }
                        return s; // success
                    }
                }

            }
            catch (SocketException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host);
            }
            catch (IOException)
            {
                // epmd closed the connection = fail
                if (s != null)
                {
                    s.Close();
                }
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when publishing " + node.Alive);
            }
            catch (OtpErlangDecodeException)
            {
                if (s != null)
                {
                    s.Close();
                }
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (invalid response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when publishing " + node.Alive);
            }

            if (s != null)
            {
                s.Close();
            }
            return null;
        }