Java DNSRecordClass.CLASS_IN属性代码示例

private DNSRecord.Pointer getDNS4ReverseAddressRecord(boolean unique, int ttl) {
    if (this.getInetAddress() instanceof Inet4Address) {
        return new DNSRecord.Pointer(this.getInetAddress().getHostAddress() + ".in-addr.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    if ((this.getInetAddress() instanceof Inet6Address) && (((Inet6Address) this.getInetAddress()).isIPv4CompatibleAddress())) {
        byte[] rawAddress = this.getInetAddress().getAddress();
        String address = (rawAddress[12] & 0xff) + "." + (rawAddress[13] & 0xff) + "." + (rawAddress[14] & 0xff) + "." + (rawAddress[15] & 0xff);
        return new DNSRecord.Pointer(address + ".in-addr.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    return null;
}
 

/**
 * Create a series of answer that correspond with the give service info.
 *
 * @param recordClass
 *            record class of the query
 * @param unique
 * @param ttl
 * @param localHost
 * @return collection of answers
 */
public Collection<DNSRecord> answers(DNSRecordClass recordClass, boolean unique, int ttl, HostInfo localHost) {
    List<DNSRecord> list = new ArrayList<DNSRecord>();
    // [PJYF Dec 6 2011] This is bad hack as I don't know what the spec should really means in this case. i.e. what is the class of our registered services.
    if ((recordClass == DNSRecordClass.CLASS_ANY) || (recordClass == DNSRecordClass.CLASS_IN)) {
        if (this.getSubtype().length() > 0) {
            list.add(new Pointer(this.getTypeWithSubtype(), DNSRecordClass.CLASS_IN, DNSRecordClass.NOT_UNIQUE, ttl, this.getQualifiedName()));
        }
        list.add(new Pointer(this.getType(), DNSRecordClass.CLASS_IN, DNSRecordClass.NOT_UNIQUE, ttl, this.getQualifiedName()));
        list.add(new Service(this.getQualifiedName(), DNSRecordClass.CLASS_IN, unique, ttl, _priority, _weight, _port, localHost.getName()));
        list.add(new Text(this.getQualifiedName(), DNSRecordClass.CLASS_IN, unique, ttl, this.getTextBytes()));
    }
    return list;
}
 

private DNSRecord.Address getDNS4AddressRecord(boolean unique, int ttl)
{
    if ((this.getInetAddress() instanceof Inet4Address) || ((this.getInetAddress() instanceof Inet6Address) && (((Inet6Address) this.getInetAddress()).isIPv4CompatibleAddress())))
    {
        return new DNSRecord.IPv4Address(this.getName(), DNSRecordClass.CLASS_IN, unique, ttl, this.getInetAddress());
    }
    return null;
}
 

private DNSRecord.Address getDNS6AddressRecord(boolean unique, int ttl)
{
    if (this.getInetAddress() instanceof Inet6Address)
    {
        return new DNSRecord.IPv6Address(this.getName(), DNSRecordClass.CLASS_IN, unique, ttl, this.getInetAddress());
    }
    return null;
}
 

private DNSRecord.Pointer getDNS4ReverseAddressRecord(boolean unique, int ttl)
{
    if (this.getInetAddress() instanceof Inet4Address)
    {
        return new DNSRecord.Pointer(this.getInetAddress().getHostAddress() + ".in-addr.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    if ((this.getInetAddress() instanceof Inet6Address) && (((Inet6Address) this.getInetAddress()).isIPv4CompatibleAddress()))
    {
        byte[] rawAddress = this.getInetAddress().getAddress();
        String address = (rawAddress[12] & 0xff) + "." + (rawAddress[13] & 0xff) + "." + (rawAddress[14] & 0xff) + "." + (rawAddress[15] & 0xff);
        return new DNSRecord.Pointer(address + ".in-addr.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    return null;
}
 

private DNSRecord.Pointer getDNS6ReverseAddressRecord(boolean unique, int ttl)
{
    if (this.getInetAddress() instanceof Inet6Address)
    {
        return new DNSRecord.Pointer(this.getInetAddress().getHostAddress() + ".ip6.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    return null;
}
 

private DNSRecord.Address getDNS4AddressRecord(boolean unique, int ttl) {
    if ((this.getInetAddress() instanceof Inet4Address) || ((this.getInetAddress() instanceof Inet6Address) && (((Inet6Address) this.getInetAddress()).isIPv4CompatibleAddress()))) {
        return new DNSRecord.IPv4Address(this.getName(), DNSRecordClass.CLASS_IN, unique, ttl, this.getInetAddress());
    }
    return null;
}
 

private DNSRecord.Address getDNS6AddressRecord(boolean unique, int ttl) {
    if (this.getInetAddress() instanceof Inet6Address) {
        return new DNSRecord.IPv6Address(this.getName(), DNSRecordClass.CLASS_IN, unique, ttl, this.getInetAddress());
    }
    return null;
}
 

private DNSRecord.Pointer getDNS6ReverseAddressRecord(boolean unique, int ttl) {
    if (this.getInetAddress() instanceof Inet6Address) {
        return new DNSRecord.Pointer(this.getInetAddress().getHostAddress() + ".ip6.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    return null;
}
 

@Override
boolean handleQuery(JmDNSImpl dns, long expirationTime) {
    ServiceInfoImpl info = (ServiceInfoImpl) dns.getServices().get(this.getKey());
    if (info != null && (info.isAnnouncing() || info.isAnnounced()) && (_port != info.getPort() || !_server.equalsIgnoreCase(dns.getLocalHost().getName()))) {
        logger1.finer("handleQuery() Conflicting probe detected from: " + getRecordSource());
        DNSRecord.Service localService = new DNSRecord.Service(info.getQualifiedName(), DNSRecordClass.CLASS_IN, DNSRecordClass.UNIQUE, DNSConstants.DNS_TTL, info.getPriority(), info.getWeight(), info.getPort(), dns.getLocalHost().getName());

        // This block is useful for debugging race conditions when jmdns is responding to itself.
        try {
            if (dns.getInetAddress().equals(getRecordSource())) {
                logger1.warning("Got conflicting probe from ourselves\n" + "incoming: " + this.toString() + "\n" + "local   : " + localService.toString());
            }
        } catch (IOException e) {
            logger1.log(Level.WARNING, "IOException", e);
        }

        int comparison = this.compareTo(localService);

        if (comparison == 0) {
            // the 2 records are identical this probably means we are seeing our own record.
            // With multiple interfaces on a single computer it is possible to see our
            // own records come in on different interfaces than the ones they were sent on.
            // see section "10. Conflict Resolution" of mdns draft spec.
            logger1.finer("handleQuery() Ignoring a identical service query");
            return false;
        }

        // Tie breaker test
        if (info.isProbing() && comparison > 0) {
            // We lost the tie break
            String oldName = info.getQualifiedName().toLowerCase();
            info.setName(NameRegister.Factory.getRegistry().incrementName(dns.getLocalHost().getInetAddress(), info.getName(), NameRegister.NameType.SERVICE));
            dns.getServices().remove(oldName);
            dns.getServices().put(info.getQualifiedName().toLowerCase(), info);
            logger1.finer("handleQuery() Lost tie break: new unique name chosen:" + info.getName());

            // We revert the state to start probing again with the new name
            info.revertState();
        } else {
            // We won the tie break, so this conflicting probe should be ignored
            // See paragraph 3 of section 9.2 in mdns draft spec
            return false;
        }

        return true;

    }
    return false;
}
 

@Override
boolean handleQuery(JmDNSImpl dns, long expirationTime) {
    ServiceInfoImpl info = (ServiceInfoImpl) dns.getServices().get(this.getKey());
    if (info != null && (info.isAnnouncing() || info.isAnnounced()) && (_port != info.getPort() || !_server.equalsIgnoreCase(dns.getLocalHost().getName()))) {
        logger1.finer("handleQuery() Conflicting probe detected from: " + getRecordSource());
        DNSRecord.Service localService = new DNSRecord.Service(info.getQualifiedName(), DNSRecordClass.CLASS_IN, DNSRecordClass.UNIQUE, DNSConstants.DNS_TTL, info.getPriority(), info.getWeight(), info.getPort(), dns.getLocalHost().getName());

        // This block is useful for debugging race conditions when jmdns is responding to itself.
        try {
            if (dns.getInterface().equals(getRecordSource())) {
                logger1.warning("Got conflicting probe from ourselves\n" + "incoming: " + this.toString() + "\n" + "local   : " + localService.toString());
            }
        } catch (IOException e) {
            logger1.log(Level.WARNING, "IOException", e);
        }

        int comparison = this.compareTo(localService);

        if (comparison == 0) {
            // the 2 records are identical this probably means we are seeing our own record.
            // With multiple interfaces on a single computer it is possible to see our
            // own records come in on different interfaces than the ones they were sent on.
            // see section "10. Conflict Resolution" of mdns draft spec.
            logger1.finer("handleQuery() Ignoring a identical service query");
            return false;
        }

        // Tie breaker test
        if (info.isProbing() && comparison > 0) {
            // We lost the tie break
            String oldName = info.getQualifiedName().toLowerCase();
            info.setName(dns.incrementName(info.getName()));
            dns.getServices().remove(oldName);
            dns.getServices().put(info.getQualifiedName().toLowerCase(), info);
            logger1.finer("handleQuery() Lost tie break: new unique name chosen:" + info.getName());

            // We revert the state to start probing again with the new name
            info.revertState();
        } else {
            // We won the tie break, so this conflicting probe should be ignored
            // See paragraph 3 of section 9.2 in mdns draft spec
            return false;
        }

        return true;

    }
    return false;
}
 

private DNSRecord.Address getDNS4AddressRecord(boolean unique, int ttl) {
    if (this.getInetAddress() instanceof Inet4Address) {
        return new DNSRecord.IPv4Address(this.getName(), DNSRecordClass.CLASS_IN, unique, ttl, this.getInetAddress());
    }
    return null;
}
 

private DNSRecord.Pointer getDNS4ReverseAddressRecord(boolean unique, int ttl) {
    if (this.getInetAddress() instanceof Inet4Address) {
        return new DNSRecord.Pointer(this.getInetAddress().getHostAddress() + ".in-addr.arpa.", DNSRecordClass.CLASS_IN, unique, ttl, this.getName());
    }
    return null;
}
 

@Override
boolean handleQuery(JmDNSImpl dns, long expirationTime)
{
    ServiceInfoImpl info = (ServiceInfoImpl) dns.getServices().get(this.getKey());
    if (info != null && (info.isAnnouncing() || info.isAnnounced()) && (_port != info.getPort() || !_server.equalsIgnoreCase(dns.getLocalHost().getName())))
    {
        logger1.finer("handleQuery() Conflicting probe detected from: " + getRecordSource());
        Service localService = new Service(info.getQualifiedName(), DNSRecordClass.CLASS_IN, DNSRecordClass.UNIQUE, DNSConstants.DNS_TTL, info.getPriority(), info.getWeight(), info.getPort(), dns.getLocalHost().getName());

        // This block is useful for debugging race conditions when jmdns is responding to itself.
        try
        {
            if (dns.getInterface().equals(getRecordSource()))
            {
                logger1.warning("Got conflicting probe from ourselves\n" + "incoming: " + this.toString() + "\n" + "local   : " + localService.toString());
            }
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }

        int comparison = this.compareTo(localService);

        if (comparison == 0)
        {
            // the 2 records are identical this probably means we are seeing our own record.
            // With multiple interfaces on a single computer it is possible to see our
            // own records come in on different interfaces than the ones they were sent on.
            // see section "10. Conflict Resolution" of mdns draft spec.
            logger1.finer("handleQuery() Ignoring a identical service query");
            return false;
        }

        // Tie breaker test
        if (info.isProbing() && comparison > 0)
        {
            // We lost the tie break
            String oldName = info.getQualifiedName().toLowerCase();
            info.setName(dns.incrementName(info.getName()));
            dns.getServices().remove(oldName);
            dns.getServices().put(info.getQualifiedName().toLowerCase(), info);
            logger1.finer("handleQuery() Lost tie break: new unique name chosen:" + info.getName());

            // We revert the state to start probing again with the new name
            info.revertState();
        }
        else
        {
            // We won the tie break, so this conflicting probe should be ignored
            // See paragraph 3 of section 9.2 in mdns draft spec
            return false;
        }

        return true;

    }
    return false;
}