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TcpEndpointI.java

// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

package IceInternal;

final class TcpEndpointI extends EndpointI
{
    final static short TYPE = 1;

    public
    TcpEndpointI(Instance instance, String ho, int po, int ti, String conId, boolean co, boolean pub)
    {
        _instance = instance;
        _host = ho;
        _port = po;
        _timeout = ti;
        _connectionId = conId;
      _compress = co;
      _publish = pub;
        calcHashValue();
    }

    public
    TcpEndpointI(Instance instance, String str)
    {
        _instance = instance;
        _host = null;
        _port = 0;
        _timeout = -1;
      _compress = false;
      _publish = true;

        String[] arr = str.split("[ \t\n\r]+");

        int i = 0;
        while(i < arr.length)
        {
            if(arr[i].length() == 0)
            {
                i++;
                continue;
            }

            String option = arr[i++];
            if(option.length() != 2 || option.charAt(0) != '-')
            {
            throw new Ice.EndpointParseException("tcp " + str);
            }

            String argument = null;
            if(i < arr.length && arr[i].charAt(0) != '-')
            {
                argument = arr[i++];
            }

            switch(option.charAt(1))
            {
                case 'h':
                {
                    if(argument == null)
                    {
                  throw new Ice.EndpointParseException("tcp " + str);
                    }

                    _host = argument;
                    break;
                }

                case 'p':
                {
                    if(argument == null)
                    {
                  throw new Ice.EndpointParseException("tcp " + str);
                    }

                    try
                    {
                        _port = Integer.parseInt(argument);
                    }
                    catch(NumberFormatException ex)
                    {
                  throw new Ice.EndpointParseException("tcp " + str);
                    }

                if(_port < 0 || _port > 65535)
                {
                  throw new Ice.EndpointParseException("tcp " + str);
                }

                    break;
                }

                case 't':
                {
                    if(argument == null)
                    {
                  throw new Ice.EndpointParseException("tcp " + str);
                    }

                    try
                    {
                        _timeout = Integer.parseInt(argument);
                    }
                    catch(NumberFormatException ex)
                    {
                  throw new Ice.EndpointParseException("tcp " + str);
                    }

                    break;
                }

                case 'z':
                {
                    if(argument != null)
                    {
                  throw new Ice.EndpointParseException("tcp " + str);
                    }

                    _compress = true;
                    break;
                }

                default:
                {
                throw new Ice.EndpointParseException("tcp " + str);
                }
            }
        }

        if(_host == null)
        {
            _host = _instance.defaultsAndOverrides().defaultHost;
          if(_host == null)
          {
            _host = "0.0.0.0";
          }
        }
      else if(_host.equals("*"))
      {
          _host = "0.0.0.0";
      }

        calcHashValue();
    }

    public
    TcpEndpointI(BasicStream s)
    {
        _instance = s.instance();
        s.startReadEncaps();
        _host = s.readString();
        _port = s.readInt();
        _timeout = s.readInt();
      _compress = s.readBool();
        s.endReadEncaps();
      _publish = true;
        calcHashValue();
    }

    //
    // Marshal the endpoint
    //
    public void
    streamWrite(BasicStream s)
    {
        s.writeShort(TYPE);
        s.startWriteEncaps();
        s.writeString(_host);
        s.writeInt(_port);
        s.writeInt(_timeout);
      s.writeBool(_compress);
        s.endWriteEncaps();
    }

    //
    // Convert the endpoint to its string form
    //
    public String
    _toString()
    {
      //
      // WARNING: Certain features, such as proxy validation in Glacier2,
      // depend on the format of proxy strings. Changes to toString() and
      // methods called to generate parts of the reference string could break
      // these features. Please review for all features that depend on the
      // format of proxyToString() before changing this and related code.
      //
        String s = "tcp -h " + _host + " -p " + _port;
        if(_timeout != -1)
        {
            s += " -t " + _timeout;
        }
      if(_compress)
      {
          s += " -z";
      }
        return s;
    }

    //
    // Return the endpoint type
    //
    public short
    type()
    {
        return TYPE;
    }

    //
    // Return the timeout for the endpoint in milliseconds. 0 means
    // non-blocking, -1 means no timeout.
    //
    public int
    timeout()
    {
        return _timeout;
    }

    //
    // Return a new endpoint with a different timeout value, provided
    // that timeouts are supported by the endpoint. Otherwise the same
    // endpoint is returned.
    //
    public EndpointI
    timeout(int timeout)
    {
        if(timeout == _timeout)
        {
            return this;
        }
        else
        {
            return new TcpEndpointI(_instance, _host, _port, timeout, _connectionId, _compress, _publish);
        }
    }

    //
    // Return a new endpoint with a different connection id.
    //
    public EndpointI
    connectionId(String connectionId)
    {
        if(connectionId == _connectionId)
        {
            return this;
        }
        else
        {
            return new TcpEndpointI(_instance, _host, _port, _timeout, connectionId, _compress, _publish);
        }
    }

    //
    // Return true if the endpoints support bzip2 compress, or false
    // otherwise.
    //
    public boolean
    compress()
    {
        return _compress;
    }

    //
    // Return a new endpoint with a different compression value,
    // provided that compression is supported by the
    // endpoint. Otherwise the same endpoint is returned.
    //
    public EndpointI
    compress(boolean compress)
    {
        if(compress == _compress)
        {
            return this;
        }
        else
        {
            return new TcpEndpointI(_instance, _host, _port, _timeout, _connectionId, compress, _publish);
        }
    }

    //
    // Return true if the endpoint is datagram-based.
    //
    public boolean
    datagram()
    {
        return false;
    }

    //
    // Return true if the endpoint is secure.
    //
    public boolean
    secure()
    {
        return false;
    }

    //
    // Return true if the endpoint type is unknown.
    //
    public boolean
    unknown()
    {
        return false;
    }

    //
    // Return a client side transceiver for this endpoint, or null if a
    // transceiver can only be created by a connector.
    //
    public Transceiver
    clientTransceiver()
    {
        return null;
    }

    //
    // Return a server side transceiver for this endpoint, or null if a
    // transceiver can only be created by an acceptor. In case a
    // transceiver is created, this operation also returns a new
    // "effective" endpoint, which might differ from this endpoint,
    // for example, if a dynamic port number is assigned.
    //
    public Transceiver
    serverTransceiver(EndpointIHolder endpoint)
    {
        endpoint.value = this;
        return null;
    }

    //
    // Return a connector for this endpoint, or null if no connector
    // is available.
    //
    public Connector
    connector()
    {
        return new TcpConnector(_instance, _host, _port);
    }

    //
    // Return an acceptor for this endpoint, or null if no acceptors
    // is available. In case an acceptor is created, this operation
    // also returns a new "effective" endpoint, which might differ
    // from this endpoint, for example, if a dynamic port number is
    // assigned.
    //
    public Acceptor
    acceptor(EndpointIHolder endpoint, String adapterName)
    {
        TcpAcceptor p = new TcpAcceptor(_instance, _host, _port);
        endpoint.value = new TcpEndpointI(_instance, _host, p.effectivePort(), _timeout, _connectionId,
                                _compress, _publish);
        return p;
    }

    //
    // Expand endpoint out in to separate endpoints for each local
    // host if endpoint was configured with no host set. This
    // only applies for ObjectAdapter endpoints.
    //
    public java.util.ArrayList
    expand(boolean includeLoopback)
    {
        java.util.ArrayList endps = new java.util.ArrayList();
      if(_host.equals("0.0.0.0"))
      {
          java.util.ArrayList hosts = Network.getLocalHosts();
          java.util.Iterator iter = hosts.iterator();
          while(iter.hasNext())
          {
              String host = (String)iter.next();
            if(includeLoopback || hosts.size() == 1 || !host.equals("127.0.0.1"))
            {
                endps.add(new TcpEndpointI(_instance, host, _port, _timeout, _connectionId, _compress,
                                     hosts.size() == 1 || !host.equals("127.0.0.1")));
            }
          }
      }
      else
      {
          endps.add(this);
      }
      return endps;
    }

    //
    // Return whether endpoint should be published in proxies
    // created by Object Adapter.
    //
    public boolean
    publish()
    {
        return _publish;
    }

    //
    // Check whether the endpoint is equivalent to a specific
    // Transceiver or Acceptor
    //
    public boolean
    equivalent(Transceiver transceiver)
    {
        return false;
    }

    public boolean
    equivalent(Acceptor acceptor)
    {
        TcpAcceptor tcpAcceptor = null;
        try
        {
            tcpAcceptor = (TcpAcceptor)acceptor;
        }
        catch(ClassCastException ex)
        {
            return false;
        }
        return tcpAcceptor.equivalent(_host, _port);
    }

    public int
    hashCode()
    {
        return _hashCode;
    }

    //
    // Compare endpoints for sorting purposes
    //
    public boolean
    equals(java.lang.Object obj)
    {
        return compareTo(obj) == 0;
    }

    public int
    compareTo(java.lang.Object obj) // From java.lang.Comparable
    {
        TcpEndpointI p = null;

        try
        {
            p = (TcpEndpointI)obj;
        }
        catch(ClassCastException ex)
        {
            return 1;
        }

        if(this == p)
        {
            return 0;
        }

        if(_port < p._port)
        {
            return -1;
        }
        else if(p._port < _port)
        {
            return 1;
        }

        if(_timeout < p._timeout)
        {
            return -1;
        }
        else if(p._timeout < _timeout)
        {
            return 1;
        }

      if(!_connectionId.equals(p._connectionId))
      {
          return _connectionId.compareTo(p._connectionId);
      }

        if(!_compress && p._compress)
        {
            return -1;
        }
        else if(!p._compress && _compress)
        {
            return 1;
        }

        if(!_host.equals(p._host))
        {
            //
            // We do the most time-consuming part of the comparison last.
            //
            java.net.InetSocketAddress laddr = null;
          try
          {
            laddr = Network.getAddress(_host, _port);
          }
          catch(Ice.DNSException ex)
          {
          }

            java.net.InetSocketAddress raddr = null;
          try
          {
            raddr = Network.getAddress(p._host, p._port);
          }
          catch(Ice.DNSException ex)
          {
          }

          if(laddr == null && raddr != null)
          {
            return -1;
          }
          else if(raddr == null && laddr != null)
          {
            return 1;
          }
          else if(laddr != null && raddr != null)
          {
            byte[] larr = laddr.getAddress().getAddress();
            byte[] rarr = raddr.getAddress().getAddress();
            assert(larr.length == rarr.length);
            for(int i = 0; i < larr.length; i++)
            {
                if(larr[i] < rarr[i])
                {
                  return -1;
                }
                else if(rarr[i] < larr[i])
                {
                  return 1;
                }
            }
          }
        }

        return 0;
    }

    private void
    calcHashValue()
    {
        try
        {
            java.net.InetAddress addr = java.net.InetAddress.getByName(_host);
            _hashCode = addr.getHostAddress().hashCode();
        }
        catch(java.net.UnknownHostException ex)
        {
            _hashCode = _host.hashCode();
        }
        _hashCode = 5 * _hashCode + _port;
        _hashCode = 5 * _hashCode + _timeout;
        _hashCode = 5 * _hashCode + _connectionId.hashCode();
        _hashCode = 5 * _hashCode + (_compress ? 1 : 0);
    }

    private Instance _instance;
    private String _host;
    private int _port;
    private int _timeout;
    private String _connectionId = "";
    private boolean _compress;
    private boolean _publish;
    private int _hashCode;
}

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