public ServiceInfoResolver(JmDNSImpl jmDNSImpl, ServiceInfoImpl info) {
super(jmDNSImpl);
this._info = info;
info.setDns(this._jmDNSImpl);
this._jmDNSImpl.addListener(
info,
DNSQuestion.newQuestion(
info.getQualifiedName(),
DNSRecordType.TYPE_ANY,
DNSRecordClass.CLASS_IN,
DNSRecordClass.NOT_UNIQUE));
}
ServiceInfoImpl(
Map<Fields, String> qualifiedNameMap,
int port,
int weight,
int priority,
boolean persistent,
byte text[]) {
Map<Fields, String> map = ServiceInfoImpl.checkQualifiedNameMap(qualifiedNameMap);
this._domain = map.get(Fields.Domain);
this._protocol = map.get(Fields.Protocol);
this._application = map.get(Fields.Application);
this._name = map.get(Fields.Instance);
this._subtype = map.get(Fields.Subtype);
this._port = port;
this._weight = weight;
this._priority = priority;
this._text = text;
this.setNeedTextAnnouncing(false);
this._state = new ServiceInfoState(this);
this._persistent = persistent;
this._ipv4Addresses = Collections.synchronizedSet(new LinkedHashSet<Inet4Address>());
this._ipv6Addresses = Collections.synchronizedSet(new LinkedHashSet<Inet6Address>());
}
public Prober(JmDNSImpl jmDNSImpl) {
this.jmDNSImpl = jmDNSImpl;
// Associate the host name to this, if it needs probing
if (this.jmDNSImpl.getState() == DNSState.PROBING_1) {
this.jmDNSImpl.setTask(this);
}
// Associate services to this, if they need probing
synchronized (this.jmDNSImpl) {
for (Iterator iterator = this.jmDNSImpl.getServices().values().iterator();
iterator.hasNext(); ) {
ServiceInfoImpl info = (ServiceInfoImpl) iterator.next();
if (info.getState() == DNSState.PROBING_1) {
info.setTask(this);
}
}
}
}
public boolean cancel() {
// Remove association from host name to this
if (this.jmDNSImpl.getTask() == this) {
this.jmDNSImpl.setTask(null);
}
// Remove associations from services to this
synchronized (this.jmDNSImpl) {
for (Iterator i = this.jmDNSImpl.getServices().values().iterator(); i.hasNext(); ) {
ServiceInfoImpl info = (ServiceInfoImpl) i.next();
if (info.getTask() == this) {
info.setTask(null);
}
}
}
return super.cancel();
}
@Override
protected void setTask(DNSTask task) {
super.setTask(task);
if ((this._task == null) && _info.needTextAnnouncing()) {
this.lock();
try {
if ((this._task == null) && _info.needTextAnnouncing()) {
if (this._state.isAnnounced()) {
this.setState(DNSState.ANNOUNCING_1);
if (this.getDns() != null) {
this.getDns().startAnnouncer();
}
}
_info.setNeedTextAnnouncing(false);
}
} finally {
this.unlock();
}
}
}
public void run() {
try {
if (this.jmDNSImpl.getState() == DNSState.ANNOUNCED) {
if (count++ < 3) {
logger.finer("run() JmDNS querying service");
long now = System.currentTimeMillis();
DNSOutgoing out = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
out.addQuestion(new DNSQuestion(type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN));
for (Iterator s = this.jmDNSImpl.getServices().values().iterator(); s.hasNext(); ) {
final ServiceInfoImpl info = (ServiceInfoImpl) s.next();
try {
out.addAnswer(
new DNSRecord.Pointer(
info.getType(),
DNSConstants.TYPE_PTR,
DNSConstants.CLASS_IN,
DNSConstants.DNS_TTL,
info.getQualifiedName()),
now);
} catch (IOException ee) {
break;
}
}
this.jmDNSImpl.send(out);
} else {
// After three queries, we can quit.
this.cancel();
}
} else {
if (this.jmDNSImpl.getState() == DNSState.CANCELED) {
this.cancel();
}
}
} catch (Throwable e) {
logger.log(Level.WARNING, "run() exception ", e);
this.jmDNSImpl.recover();
}
}
/**
* @param type
* @param name
* @param subtype
* @param port
* @param weight
* @param priority
* @param persistent
* @param text
* @see javax.jmdns.ServiceInfo#create(String, String, int, int, int, byte[])
*/
public ServiceInfoImpl(
String type,
String name,
String subtype,
int port,
int weight,
int priority,
boolean persistent,
byte text[]) {
this(
ServiceInfoImpl.decodeQualifiedNameMap(type, name, subtype),
port,
weight,
priority,
persistent,
text);
}
/**
* @param type
* @param name
* @param subtype
* @param port
* @param weight
* @param priority
* @param persistent
* @param props
* @see javax.jmdns.ServiceInfo#create(String, String, int, int, int, Map)
*/
public ServiceInfoImpl(
String type,
String name,
String subtype,
int port,
int weight,
int priority,
boolean persistent,
Map<String, ?> props) {
this(
ServiceInfoImpl.decodeQualifiedNameMap(type, name, subtype),
port,
weight,
priority,
persistent,
textFromProperties(props));
}
/**
* @param type
* @param name
* @param subtype
* @param port
* @param weight
* @param priority
* @param persistent
* @param text
* @see javax.jmdns.ServiceInfo#create(String, String, int, int, int, String)
*/
public ServiceInfoImpl(
String type,
String name,
String subtype,
int port,
int weight,
int priority,
boolean persistent,
String text) {
this(
ServiceInfoImpl.decodeQualifiedNameMap(type, name, subtype),
port,
weight,
priority,
persistent,
(byte[]) null);
_server = text;
byte[] encodedText = null;
try {
ByteArrayOutputStream out = new ByteArrayOutputStream(256);
ByteArrayOutputStream out2 = new ByteArrayOutputStream(100);
writeUTF(out2, text);
byte data[] = out2.toByteArray();
if (data.length > 255) {
throw new IOException(
"Cannot have individual values larger that 255 chars. Offending value: " + text);
}
out.write((byte) data.length);
out.write(data, 0, data.length);
encodedText = out.toByteArray();
} catch (IOException e) {
throw new RuntimeException("unexpected exception: " + e);
}
this._text =
(encodedText != null && encodedText.length > 0 ? encodedText : DNSRecord.EMPTY_TXT);
}
@Override
public void run() {
try {
if (this._jmDNSImpl.getState() == DNSState.ANNOUNCED) {
if (_count++ < 3 && !_info.hasData()) {
long now = System.currentTimeMillis();
DNSOutgoing out = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
out.addQuestion(
DNSQuestion.newQuestion(
_info.getQualifiedName(),
DNSRecordType.TYPE_SRV,
DNSRecordClass.CLASS_IN,
DNSRecordClass.NOT_UNIQUE));
out.addQuestion(
DNSQuestion.newQuestion(
_info.getQualifiedName(),
DNSRecordType.TYPE_TXT,
DNSRecordClass.CLASS_IN,
DNSRecordClass.NOT_UNIQUE));
if (_info.getServer() != null) {
out.addQuestion(
DNSQuestion.newQuestion(
_info.getServer(),
DNSRecordType.TYPE_A,
DNSRecordClass.CLASS_IN,
DNSRecordClass.NOT_UNIQUE));
out.addQuestion(
DNSQuestion.newQuestion(
_info.getServer(),
DNSRecordType.TYPE_AAAA,
DNSRecordClass.CLASS_IN,
DNSRecordClass.NOT_UNIQUE));
}
out.addAnswer(
(DNSRecord)
this._jmDNSImpl
.getCache()
.getDNSEntry(
_info.getQualifiedName(),
DNSRecordType.TYPE_SRV,
DNSRecordClass.CLASS_IN),
now);
out.addAnswer(
(DNSRecord)
this._jmDNSImpl
.getCache()
.getDNSEntry(
_info.getQualifiedName(),
DNSRecordType.TYPE_TXT,
DNSRecordClass.CLASS_IN),
now);
if (_info.getServer() != null) {
out.addAnswer(
(DNSRecord)
this._jmDNSImpl
.getCache()
.getDNSEntry(
_info.getServer(), DNSRecordType.TYPE_A, DNSRecordClass.CLASS_IN),
now);
out.addAnswer(
(DNSRecord)
this._jmDNSImpl
.getCache()
.getDNSEntry(
_info.getServer(), DNSRecordType.TYPE_AAAA, DNSRecordClass.CLASS_IN),
now);
}
this._jmDNSImpl.send(out);
} else {
// After three queries, we can quit.
this.cancel();
this._jmDNSImpl.removeListener(_info);
}
} else {
if (this._jmDNSImpl.getState() == DNSState.CANCELED) {
this.cancel();
this._jmDNSImpl.removeListener(_info);
}
}
} catch (Throwable e) {
logger.log(Level.WARNING, "run() exception ", e);
this._jmDNSImpl.recover();
}
}
public void run() {
synchronized (this.jmDNSImpl.getIoLock()) {
DNSOutgoing out = null;
try {
// send probes for JmDNS itself
if (this.jmDNSImpl.getState() == taskState && this.jmDNSImpl.getTask() == this) {
if (out == null) {
out = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
}
out.addQuestion(
new DNSQuestion(
this.jmDNSImpl.getLocalHost().getName(),
DNSConstants.TYPE_ANY,
DNSConstants.CLASS_IN));
this.jmDNSImpl.getLocalHost().addAddressRecords(out, true);
this.jmDNSImpl.advanceState();
}
// send probes for services
// Defensively copy the services into a local list,
// to prevent race conditions with methods registerService
// and unregisterService.
List list;
synchronized (this.jmDNSImpl) {
list = new LinkedList(this.jmDNSImpl.getServices().values());
}
for (Iterator i = list.iterator(); i.hasNext(); ) {
ServiceInfoImpl info = (ServiceInfoImpl) i.next();
synchronized (info) {
if (info.getState() == taskState && info.getTask() == this) {
info.advanceState();
if (out == null) {
out = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
out.addQuestion(
new DNSQuestion(
info.getQualifiedName(), DNSConstants.TYPE_ANY, DNSConstants.CLASS_IN));
}
// the "unique" flag should be not set here because these
// answers haven't been proven unique yet
// this means the record will not exactly match the
// announcement record
out.addAuthorativeAnswer(
new DNSRecord.Service(
info.getQualifiedName(),
DNSConstants.TYPE_SRV,
DNSConstants.CLASS_IN,
DNSConstants.DNS_TTL,
info.getPriority(),
info.getWeight(),
info.getPort(),
this.jmDNSImpl.getLocalHost().getName()));
}
}
}
if (out != null) {
this.jmDNSImpl.send(out);
} else {
// If we have nothing to send, another timer taskState ahead
// of us has done the job for us. We can cancel.
cancel();
return;
}
} catch (Throwable e) {
this.jmDNSImpl.recover();
}
taskState = taskState.advance();
if (!taskState.isProbing()) {
cancel();
this.jmDNSImpl.startAnnouncer();
}
}
}
