diff options
Diffstat (limited to 'src/javax/jmdns/impl/tasks/resolver/TypeResolver.java')
| -rw-r--r-- | src/javax/jmdns/impl/tasks/resolver/TypeResolver.java | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/javax/jmdns/impl/tasks/resolver/TypeResolver.java b/src/javax/jmdns/impl/tasks/resolver/TypeResolver.java new file mode 100644 index 0000000..8382e54 --- /dev/null +++ b/src/javax/jmdns/impl/tasks/resolver/TypeResolver.java @@ -0,0 +1,75 @@ +// Copyright 2003-2005 Arthur van Hoff, Rick Blair +// Licensed under Apache License version 2.0 +// Original license LGPL + +package javax.jmdns.impl.tasks.resolver; + +import java.io.IOException; + +import javax.jmdns.impl.DNSOutgoing; +import javax.jmdns.impl.DNSQuestion; +import javax.jmdns.impl.DNSRecord; +import javax.jmdns.impl.JmDNSImpl; +import javax.jmdns.impl.JmDNSImpl.ServiceTypeEntry; +import javax.jmdns.impl.constants.DNSConstants; +import javax.jmdns.impl.constants.DNSRecordClass; +import javax.jmdns.impl.constants.DNSRecordType; + +/** + * Helper class to resolve service types. + * <p/> + * The TypeResolver queries three times consecutively for service types, and then removes itself from the timer. + * <p/> + * The TypeResolver will run only if JmDNS is in state ANNOUNCED. + */ +public class TypeResolver extends DNSResolverTask { + + /** + * @param jmDNSImpl + */ + public TypeResolver(JmDNSImpl jmDNSImpl) { + super(jmDNSImpl); + } + + /* + * (non-Javadoc) + * @see javax.jmdns.impl.tasks.DNSTask#getName() + */ + @Override + public String getName() { + return "TypeResolver(" + (this.getDns() != null ? this.getDns().getName() : "") + ")"; + } + + /* + * (non-Javadoc) + * @see javax.jmdns.impl.tasks.Resolver#addAnswers(javax.jmdns.impl.DNSOutgoing) + */ + @Override + protected DNSOutgoing addAnswers(DNSOutgoing out) throws IOException { + DNSOutgoing newOut = out; + long now = System.currentTimeMillis(); + for (String type : this.getDns().getServiceTypes().keySet()) { + ServiceTypeEntry typeEntry = this.getDns().getServiceTypes().get(type); + newOut = this.addAnswer(newOut, new DNSRecord.Pointer("_services._dns-sd._udp.local.", DNSRecordClass.CLASS_IN, DNSRecordClass.NOT_UNIQUE, DNSConstants.DNS_TTL, typeEntry.getType()), now); + } + return newOut; + } + + /* + * (non-Javadoc) + * @see javax.jmdns.impl.tasks.Resolver#addQuestions(javax.jmdns.impl.DNSOutgoing) + */ + @Override + protected DNSOutgoing addQuestions(DNSOutgoing out) throws IOException { + return this.addQuestion(out, DNSQuestion.newQuestion("_services._dns-sd._udp.local.", DNSRecordType.TYPE_PTR, DNSRecordClass.CLASS_IN, DNSRecordClass.NOT_UNIQUE)); + } + + /* + * (non-Javadoc) + * @see javax.jmdns.impl.tasks.Resolver#description() + */ + @Override + protected String description() { + return "querying type"; + } +}
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