com.jscape.inet.dns

Class DnsInputStream

java.lang.Object

java.io.InputStream

java.io.ByteArrayInputStream

com.jscape.inet.dns.DnsInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class DnsInputStream
extends java.io.ByteArrayInputStream

InputStream responsible for parsing byte[] data retrieved in communcations with a Dns server.

Constructor Summary

Constructors

Constructor and Description
DnsInputStream(byte[] data, int off, int len) Constructs a new DnsInputStream instance.

Method Summary

Modifier and Type	Method and Description
int	readByte() Reads the next byte of data from this input stream.
java.lang.String	readDomainName() Parses out domain name from response.
long	readInt() Reads four input bytes and returns an int value.
DnsRecord	readRecord() Reads a DnsRecord from response.
int	readShort() Reads two input bytes and returns a unsigned short value.
java.lang.String	readString() Reads String from response.

Methods inherited from class java.io.ByteArrayInputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DnsInputStream

public DnsInputStream(byte[] data,
                      int off,
                      int len)

Constructs a new DnsInputStream instance.

Parameters:

data - the input buffer

off - the offset in the buffer of the first byte to read.

len - the maximum number of bytes to read from the buffer.

Method Detail

readByte

public int readByte()
             throws java.io.IOException

Reads the next byte of data from this input stream.

Returns:

the 8-bit value read.

Throws:

java.io.IOException - if an I/O error occurs

readShort

public int readShort()
              throws java.io.IOException

Reads two input bytes and returns a unsigned short value.

Returns:

the 16-bit value read.

Throws:

java.io.IOException - if an I/O error occurs

readInt

public long readInt()
             throws java.io.IOException

Reads four input bytes and returns an int value.

Returns:

the int value read.

Throws:

java.io.IOException - if an I/O error occurs

readString

public java.lang.String readString()
                            throws java.io.IOException

Reads String from response.

Returns:

the String read.

Throws:

java.io.IOException - if an I/O error occurs

readDomainName

public java.lang.String readDomainName()
                                throws java.io.IOException

Parses out domain name from response.

Returns:

domain name

Throws:

java.io.IOException - if an I/O error occurs

readRecord

public DnsRecord readRecord()
                     throws java.io.IOException

Reads a DnsRecord from response.

Returns:

the DnsRecord read.

Throws:

java.io.IOException - if an I/O error occurs

See Also:

DnsRecord