write1() public method

public write1 ( long n ) : void
n long
return void
        /*
         * Send an auth error to peer because he sent a bad cookie. The auth error
         * uses his cookie (not revealing ours). This is just like send_reg
         * otherwise
         */
        private void cookieError(OtpLocalNode local, OtpErlangAtom cookie)
        {
            try
            {
                OtpOutputStream header = new OtpOutputStream(headerLen);

                // preamble: 4 byte length + "passthrough" tag + version
                header.write4BE(0); // reserve space for length
                header.write1(passThrough);
                header.write1(version);

                header.write_tuple_head(4);
                header.write_long(regSendTag);
                header.write_any(local.createPid()); // disposable pid
                header.write_atom(cookie.atomValue()); // important: his cookie,
                // not mine...
                header.write_atom("auth");

                // version for payload
                header.write1(version);

                // the payload

                // the no_auth message (copied from Erlang) Don't change this
                // (Erlang will crash)
                // {$gen_cast, {print, "~n** Unauthorized cookie ~w **~n",
                // [foo@aule]}}
                OtpErlangObject[] msg = new OtpErlangObject[2];
                OtpErlangObject[] msgbody = new OtpErlangObject[3];

                msgbody[0] = new OtpErlangAtom("print");
                msgbody[1] = new OtpErlangString("~n** Bad cookie sent to " + local + " **~n");

                // Erlang will crash and burn if there is no third argument here...
                msgbody[2] = new OtpErlangList(); // empty list

                msg[0] = new OtpErlangAtom("$gen_cast");
                msg[1] = new OtpErlangTuple(msgbody);

                OtpOutputStream payload = new OtpOutputStream(new OtpErlangTuple(msg));

                // fix up length in preamble
                header.poke4BE(0, header.size() + payload.size() - 4);

                try
                {
                    do_send(header, payload);
                }
                catch (IOException)
                {
                } // ignore
            }
            finally
            {
                close();
            }
            throw new OtpAuthException("Remote cookie not authorized: " + cookie.atomValue());
        }
        private void sendExit(int tag, OtpErlangPid from, OtpErlangPid dest, OtpErlangObject reason)
        {
            if (!connected)
            {
                throw new IOException("Not connected");
            }
            OtpOutputStream header = new OtpOutputStream(headerLen);

            // preamble: 4 byte length + "passthrough" tag
            header.write4BE(0); // reserve space for length
            header.write1(passThrough);
            header.write1(version);

            // header
            header.write_tuple_head(4);
            header.write_long(tag);
            header.write_any(from);
            header.write_any(dest);
            header.write_any(reason);

            // fix up length in preamble
            header.poke4BE(0, header.size() - 4);

            do_send(header);
        }
        protected void sendName(int dist, int flags)
        {
            OtpOutputStream obuf = new OtpOutputStream();
            String str = self.Node;
            obuf.write2BE(str.Length + 7); // 7 bytes + nodename
            obuf.write1(AbstractNode.NTYPE_R6);
            obuf.write2BE(dist);
            obuf.write4BE(flags);
            obuf.write(Encoding.GetEncoding("iso-8859-1").GetBytes(str));

            obuf.WriteTo(socket.GetOutputStream());

            if (traceLevel >= handshakeThreshold)
            {
                log.Debug("-> " + "HANDSHAKE sendName" + " flags=" + flags
                             + " dist=" + dist + " local=" + self);
            }
        }
        protected void sendStatus(String status)
        {
            OtpOutputStream obuf = new OtpOutputStream();
            obuf.write2BE(status.Length + 1);
            obuf.write1(ChallengeStatus);
            obuf.write(Encoding.GetEncoding("iso-8859-1").GetBytes(status));

            obuf.WriteTo(socket.GetOutputStream());

            if (traceLevel >= handshakeThreshold)
            {
                log.Debug("-> " + "HANDSHAKE sendStatus" + " status="
                             + status + " local=" + self);
            }
        }
        protected void sendChallengeAck(byte[] digest)
        {
            OtpOutputStream obuf = new OtpOutputStream();
            obuf.write2BE(17);
            obuf.write1(ChallengeAck);
            obuf.write(digest);

            obuf.WriteTo(socket.GetOutputStream());

            if (traceLevel >= handshakeThreshold)
            {
                log.Debug("-> " + "HANDSHAKE sendChallengeAck"
                             + " digest=" + hex(digest) + " local=" + self);
            }
        }
        protected void sendChallengeReply(int challenge, byte[] digest)
        {
            OtpOutputStream obuf = new OtpOutputStream();
            obuf.write2BE(21);
            obuf.write1(ChallengeReply);
            obuf.write4BE(challenge);
            obuf.write(digest);
            obuf.WriteTo(socket.GetOutputStream());

            if (traceLevel >= handshakeThreshold)
            {
                log.Debug("-> " + "HANDSHAKE sendChallengeReply"
                             + " challenge=" + challenge + " digest=" + hex(digest)
                             + " local=" + self);
            }
        }
Esempio n. 7
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        /*
         * 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 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;
        }
        /**
         * Send a pre-encoded message to a process on a remote node.
         *
         * @param dest
         *            the Erlang PID of the remote process.
         * @param msg
         *            the encoded message to send.
         *
         * @exception java.io.IOException
         *                if the connection is not active or a communication error
         *                occurs.
         */
        protected void sendBuf(OtpErlangPid from, OtpErlangPid dest, OtpOutputStream payload)
        {
            if (!connected)
            {
                throw new IOException("Not connected");
            }
            OtpOutputStream header = new OtpOutputStream(headerLen);

            // preamble: 4 byte length + "passthrough" tag + version
            header.write4BE(0); // reserve space for length
            header.write1(passThrough);
            header.write1(version);

            // header info
            header.write_tuple_head(3);
            header.write_long(sendTag);
            if (sendCookie)
            {
                header.write_atom(self.Cookie);
            }
            else
            {
                header.write_atom("");
            }
            header.write_any(dest);

            // version for payload
            header.write1(version);

            // fix up length in preamble
            header.poke4BE(0, header.size() + payload.size() - 4);

            do_send(header, payload);
        }
Esempio n. 9
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        private static TcpClient r3_publish(OtpLocalNode node)
        {
            TcpClient s;

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

                obuf.write2BE(node.Alive.Length + 3);

                obuf.write1(publish3req);
                obuf.write2BE(node.Port);
                obuf.writeN(Encoding.GetEncoding("iso-8859-1").GetBytes(node.Alive));

                // send request
                obuf.WriteTo(s.GetStream());
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("-> PUBLISH (r3) " + node + " port=" + node.Port);
                }

                byte[] tmpbuf = new byte[100];

                int n = s.GetStream().Read(tmpbuf, 0, tmpbuf.Length);

                if (n < 0)
                {
                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("<- (no response)");
                    }
                    return null;
                }

                OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);

                if (ibuf.read1() == publish3ok)
                {
                    node.Creation = ibuf.read2BE();
                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("<- OK");
                    }
                    return s; // success - don't close socket
                }
            }
            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 (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when publishing " + node.Alive);
            }
            catch (OtpErlangDecodeException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (invalid response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when publishing " + node.Alive);
            }
            return null; // failure
        }
Esempio n. 10
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        private static int r4_lookupPort(AbstractNode node)
        {
            int port = 0;

            try
            {
                OtpOutputStream obuf = new OtpOutputStream();
                using (TcpClient s = new TcpClient(node.Host, EpmdPort.get()))
                {
                    // build and send epmd request
                    // length[2], tag[1], alivename[n] (length = n+1)
                    obuf.write2BE(node.Alive.Length + 1);
                    obuf.write1(port4req);
                    obuf.writeN(Encoding.GetEncoding("iso-8859-1").GetBytes(node.Alive));

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

                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("-> 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, tmpbuf.Length);

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

                    OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);

                    int response = ibuf.read1();
                    if (response == port4resp)
                    {
                        int result = ibuf.read1();
                        if (result == 0)
                        {
                            port = ibuf.read2BE();

                            node.Type = ibuf.read1();
                            node.Proto = ibuf.read1();
                            node.DistHigh = ibuf.read2BE();
                            node.DistLow = ibuf.read2BE();
                            // ignore rest of fields
                        }
                    }
                }
            }
            catch (SocketException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host);
            }
            catch (IOException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when looking up " + node.Alive);
            }
            catch (OtpErlangDecodeException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (invalid response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when looking up " + node.Alive);
            }

            if (traceLevel >= traceThreshold)
            {
                if (port == 0)
                {
                    log.Debug("<- NOT FOUND");
                }
                else
                {
                    log.Debug("<- PORT " + port);
                }
            }
            return port;
        }
Esempio n. 11
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        private static int r3_lookupPort(AbstractNode node)
        {
            int port = 0;

            try
            {
                OtpOutputStream obuf = new OtpOutputStream();
                using (TcpClient s = new TcpClient(node.Host, EpmdPort.get()))
                {
                    // build and send epmd request
                    // length[2], tag[1], alivename[n] (length = n+1)
                    obuf.write2BE(node.Alive.Length + 1);
                    obuf.write1(port3req);
                    obuf.writeN(Encoding.GetEncoding("iso-8859-1").GetBytes(node.Alive));

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

                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("-> LOOKUP (r3) " + node);
                    }

                    // receive and decode reply
                    byte[] tmpbuf = new byte[100];

                    s.GetStream().Read(tmpbuf, 0, tmpbuf.Length);
                    OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);

                    port = ibuf.read2BE();
                }
            }
            catch (SocketException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host);
            }
            catch (IOException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when looking up " + node.Alive);
            }
            catch (OtpErlangDecodeException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (invalid response)");
                }
                throw new IOException("Nameserver not responding on " + node.Host
                              + " when looking up " + node.Alive);
            }

            if (traceLevel >= traceThreshold)
            {
                if (port == 0)
                {
                    log.Debug("<- NOT FOUND");
                }
                else
                {
                    log.Debug("<- PORT " + port);
                }
            }
            return port;
        }
Esempio n. 12
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 // 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)
 {
     try
     {
         using (TcpClient s = new TcpClient(Dns.GetHostName(), EpmdPort.get()))
         {
             OtpOutputStream obuf = new OtpOutputStream();
             obuf.write2BE(node.Alive.Length + 1);
             obuf.write1(stopReq);
             obuf.writeN(Encoding.GetEncoding("iso-8859-1").GetBytes(node.Alive));
             obuf.WriteTo(s.GetStream());
             // don't even wait for a response (is there one?)
             if (traceLevel >= traceThreshold)
             {
                 log.Debug("-> UNPUBLISH " + node + " port=" + node.Port);
                 log.Debug("<- OK (assumed)");
             }
         }
     }
     catch (Exception) /* ignore all failures */
     {
     }
 }
Esempio n. 13
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        public static String[] lookupNames(IPAddress address)
        {
            try
            {
                OtpOutputStream obuf = new OtpOutputStream();

                using (TcpClient s = new TcpClient(address.ToString(), EpmdPort.get()))
                {
                    obuf.write2BE(1);
                    obuf.write1(names4req);
                    // send request
                    obuf.WriteTo(s.GetStream());

                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("-> NAMES (r4) ");
                    }

                    // get reply
                    byte[] buffer = new byte[256];
                    MemoryStream ms = new MemoryStream(256);
                    while (true)
                    {
                        int bytesRead = s.GetStream().Read(buffer, 0, buffer.Length);
                        if (bytesRead == -1)
                        {
                            break;
                        }
                        ms.Write(buffer, 0, bytesRead);
                    }
                    byte[] tmpbuf = ms.GetBuffer();
                    OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
                    ibuf.read4BE(); // read port int
                    // int port = ibuf.read4BE();
                    // check if port = epmdPort

                    int n = tmpbuf.Length;
                    byte[] buf = new byte[n - 4];
                    Array.Copy(tmpbuf, 4, buf, 0, n - 4);
                    String all = OtpErlangString.newString(buf);
                    return all.Split(new char[] { '\n' });
                }
            }
            catch (SocketException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding on " + address);
            }
            catch (IOException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (no response)");
                }
                throw new IOException("Nameserver not responding when requesting names");
            }
            catch (OtpErlangDecodeException)
            {
                if (traceLevel >= traceThreshold)
                {
                    log.Debug("<- (invalid response)");
                }
                throw new IOException("Nameserver not responding when requesting names");
            }
        }
Esempio n. 14
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            private void r4_publish(TcpClient s, OtpInputStream ibuf)
            {
                try
                {
                    int port = ibuf.read2BE();
                    int type = ibuf.read1();
                    int proto = ibuf.read1();
                    int distHigh = ibuf.read2BE();
                    int distLow = ibuf.read2BE();
                    int len = ibuf.read2BE();
                    byte[] alive = new byte[len];
                    ibuf.readN(alive);
                    int elen = ibuf.read2BE();
                    byte[] extra = new byte[elen];
                    ibuf.readN(extra);
                    String name = OtpErlangString.newString(alive);
                    OtpPublishedNode node = new OtpPublishedNode(name);
                    node.Type = type;
                    node.DistHigh = distHigh;
                    node.DistLow = distLow;
                    node.Proto = proto;
                    node.Port = port;

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

                    OtpOutputStream obuf = new OtpOutputStream();
                    obuf.write1(publish4resp);
                    obuf.write1(0);
                    obuf.write2BE(epmd.Creation);
                    obuf.WriteTo(s.GetStream());

                    lock (portmap)
                    {
                        portmap.Add(name, node);
                    }
                    publishedPort.Add(name);
                }
                catch (IOException)
                {
                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("<- (no response)");
                    }
                    throw new IOException("Request not responding");
                }
                return;
            }
Esempio n. 15
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            private void r4_port(TcpClient s, OtpInputStream ibuf)
            {
                try
                {
                    int len = (int)(ibuf.Length - 1);
                    byte[] alive = new byte[len];
                    ibuf.readN(alive);
                    String name = OtpErlangString.newString(alive);
                    OtpPublishedNode node = null;

                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("<- PORT (r4) " + name);
                    }

                    lock (portmap)
                    {
                        if (portmap.ContainsKey(name))
                        {
                            node = portmap[name];
                        }
                    }

                    OtpOutputStream obuf = new OtpOutputStream();
                    if (node != null)
                    {
                        obuf.write1(port4resp);
                        obuf.write1(0);
                        obuf.write2BE(node.Port);
                        obuf.write1(node.Type);
                        obuf.write1(node.Proto);
                        obuf.write2BE(node.DistHigh);
                        obuf.write2BE(node.DistLow);
                        obuf.write2BE(len);
                        obuf.writeN(alive);
                        obuf.write2BE(0);
                    }
                    else
                    {
                        obuf.write1(port4resp);
                        obuf.write1(1);
                    }
                    obuf.WriteTo(s.GetStream());
                }
                catch (IOException)
                {
                    if (traceLevel >= traceThreshold)
                    {
                        log.Debug("<- (no response)");
                    }
                    throw new IOException("Request not responding");
                }
                return;
            }