Java Doc for Message.java in  » Net » dnsjava » org » xbill » DNS » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » dnsjava » org.xbill.DNS   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.xbill.DNS.Message All known Subclasses:   org.xbill.DNS.Update, Message public class Message implements Cloneable(Code) A DNS Message. A message is the basic unit of communication between the client and server of a DNS operation. A message consists of a Header and 4 message sections. See Also:   Resolver See Also:   Header See Also:   Section author:    Brian Wellington Field Summary final public static  int MAXLENGTH      The maximum length of a message in wire format. final static  int TSIG_FAILED      final static  int TSIG_INTERMEDIATE      final static  int TSIG_SIGNED      final static  int TSIG_UNSIGNED      final static  int TSIG_VERIFIED       int tsigState       int tsigstart      Constructor Summary public   Message(int id)      public   Message()        Message(DNSInput in)      public   Message(byte[] b)      Method Summary public  void addRecord(Record r, int section)      Adds a record to a section of the Message, and adjusts the header. public  Object clone()      Creates a copy of this Message. public  boolean findRRset(Name name, int type, int section)      Determines if an RRset with the given name and type is already present in the given section. public  boolean findRRset(Name name, int type)      Determines if an RRset with the given name and type is already present in any section. public  boolean findRecord(Record r, int section)      Determines if the given record is already present in the given section. public  boolean findRecord(Record r)      Determines if the given record is already present in any section. public  Header getHeader()      Retrieves the Header. public  OPTRecord getOPT()      Returns the OPT record from the ADDITIONAL section, if one is present. public  Record getQuestion()      Returns the first record in the QUESTION section. public  int getRcode()      Returns the message's rcode (error code). public  Record[] getSectionArray(int section)      Returns an array containing all records in the given section, or an empty array if the section is empty. public  RRset[] getSectionRRsets(int section)      Returns an array containing all records in the given section grouped into RRsets. public  TSIGRecord getTSIG()      Returns the TSIG record from the ADDITIONAL section, if one is present. public  boolean isSigned()      public  boolean isVerified()      public static  Message newQuery(Record r)      Creates a new Message with a random Message ID suitable for sending as a query. public static  Message newUpdate(Name zone)      Creates a new Message to contain a dynamic update. public  int numBytes()      Returns the size of the message. public  void removeAllRecords(int section)      Removes all records from a section of the Message, and adjusts the header. public  boolean removeRecord(Record r, int section)      Removes a record from a section of the Message, and adjusts the header. public  String sectionToString(int i)      Converts the given section of the Message to a String. public  void setHeader(Header h)      Replaces the Header with a new one. public  void setTSIG(TSIG key, int error, TSIGRecord querytsig)      Sets the TSIG key and other necessary information to sign a message. public  String toString()      Converts the Message to a String.  void toWire(DNSOutput out)      public  byte[] toWire()      Returns an array containing the wire format representation of the Message. public  byte[] toWire(int maxLength)      Returns an array containing the wire format representation of the Message with the specified maximum length. Field Detail MAXLENGTH final public static int MAXLENGTH(Code) The maximum length of a message in wire format. TSIG_FAILED final static int TSIG_FAILED(Code) TSIG_INTERMEDIATE final static int TSIG_INTERMEDIATE(Code) TSIG_SIGNED final static int TSIG_SIGNED(Code) TSIG_UNSIGNED final static int TSIG_UNSIGNED(Code) TSIG_VERIFIED final static int TSIG_VERIFIED(Code) tsigState int tsigState(Code) tsigstart int tsigstart(Code) Constructor Detail Message public Message(int id)(Code) Creates a new Message with the specified Message ID Message public Message()(Code) Creates a new Message with a random Message ID Message Message(DNSInput in) throws IOException(Code) Message public Message(byte[] b) throws IOException(Code) Creates a new Message from its DNS wire format representation Parameters:   b - A byte array containing the DNS Message. Method Detail addRecord public void addRecord(Record r, int section)(Code) Adds a record to a section of the Message, and adjusts the header. See Also:   Record See Also:   Section clone public Object clone()(Code) Creates a copy of this Message. This is done by the Resolver before adding TSIG and OPT records, for example. See Also:   Resolver See Also:   TSIGRecord See Also:   OPTRecord findRRset public boolean findRRset(Name name, int type, int section)(Code) Determines if an RRset with the given name and type is already present in the given section. See Also:   RRset See Also:   Section findRRset public boolean findRRset(Name name, int type)(Code) Determines if an RRset with the given name and type is already present in any section. See Also:   RRset See Also:   Section findRecord public boolean findRecord(Record r, int section)(Code) Determines if the given record is already present in the given section. See Also:   Record See Also:   Section findRecord public boolean findRecord(Record r)(Code) Determines if the given record is already present in any section. See Also:   Record See Also:   Section getHeader public Header getHeader()(Code) Retrieves the Header. See Also:   Header getOPT public OPTRecord getOPT()(Code) Returns the OPT record from the ADDITIONAL section, if one is present. See Also:   OPTRecord See Also:   Section getQuestion public Record getQuestion()(Code) Returns the first record in the QUESTION section. See Also:   Record See Also:   Section getRcode public int getRcode()(Code) Returns the message's rcode (error code). This incorporates the EDNS extended rcode. getSectionArray public Record[] getSectionArray(int section)(Code) Returns an array containing all records in the given section, or an empty array if the section is empty. See Also:   Record See Also:   Section getSectionRRsets public RRset[] getSectionRRsets(int section)(Code) Returns an array containing all records in the given section grouped into RRsets. See Also:   RRset See Also:   Section getTSIG public TSIGRecord getTSIG()(Code) Returns the TSIG record from the ADDITIONAL section, if one is present. See Also:   TSIGRecord See Also:   TSIG See Also:   Section isSigned public boolean isSigned()(Code) Was this message signed by a TSIG? See Also:   TSIG isVerified public boolean isVerified()(Code) If this message was signed by a TSIG, was the TSIG verified? See Also:   TSIG newQuery public static Message newQuery(Record r)(Code) Creates a new Message with a random Message ID suitable for sending as a query. Parameters:   r - A record containing the question newUpdate public static Message newUpdate(Name zone)(Code) Creates a new Message to contain a dynamic update. A random Message ID and the zone are filled in. Parameters:   zone - The zone to be updated numBytes public int numBytes()(Code) Returns the size of the message. Only valid if the message has been converted to or from wire format. removeAllRecords public void removeAllRecords(int section)(Code) Removes all records from a section of the Message, and adjusts the header. See Also:   Record See Also:   Section removeRecord public boolean removeRecord(Record r, int section)(Code) Removes a record from a section of the Message, and adjusts the header. See Also:   Record See Also:   Section sectionToString public String sectionToString(int i)(Code) Converts the given section of the Message to a String. See Also:   Section setHeader public void setHeader(Header h)(Code) Replaces the Header with a new one. See Also:   Header setTSIG public void setTSIG(TSIG key, int error, TSIGRecord querytsig)(Code) Sets the TSIG key and other necessary information to sign a message. Parameters:   key - The TSIG key. Parameters:   error - The value of the TSIG error field. Parameters:   querytsig - If this is a response, the TSIG from the request. toString public String toString()(Code) Converts the Message to a String. toWire void toWire(DNSOutput out)(Code) toWire public byte[] toWire()(Code) Returns an array containing the wire format representation of the Message. toWire public byte[] toWire(int maxLength)(Code) Returns an array containing the wire format representation of the Message with the specified maximum length. This will generate a truncated message (with the TC bit) if the message doesn't fit, and will also sign the message with the TSIG key set by a call to setTSIG(). This method may return null if the message could not be rendered at all; this could happen if maxLength is smaller than a DNS header, for example. Parameters:   maxLength - The maximum length of the message. The wire format of the message, or null if the message could not berendered into the specified length. See Also:   Flags See Also:   TSIG Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)