SessionTag (I2P Anonymous Network - Java Documentation

java.lang.Object
- net.i2p.data.DataStructureImpl
- - net.i2p.data.SimpleDataStructure
  - - net.i2p.data.SessionTag

All Implemented Interfaces:

Serializable, DataStructure
```
public class SessionTag
extends SimpleDataStructure
```
32 bytes, usually of random data. Changed from ByteArray to SimpleDataStructure in 0.8.2.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static int BYTE_LENGTH
- Fields inherited from class net.i2p.data.SimpleDataStructure
  _data

Fields
Modifier and Type	Field	Description
`static int`	`BYTE_LENGTH`

Constructor Summary

Constructors
Constructor Description

SessionTag()

SessionTag(boolean create)

SessionTag(byte[] val)

Constructors
Constructor	Description
`SessionTag()`
`SessionTag(boolean create)`
`SessionTag(byte[] val)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`hashCode()`	SessionTags are generated both locally and by peers, in quantity, and are used as keys in several datastructures (see TransientSessionKeyManager), so we use a secure hashCode function.
`int`	`length()`	The legal length of the byte array in this data structure
`void`	`readBytes(InputStream in)`	Sets the data.
`void`	`setData(byte[] data)`	Sets the data.

Methods inherited from class net.i2p.data.DataStructureImpl
read

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from class net.i2p.data.SimpleDataStructure
calculateHash, equals, fromBase64, fromByteArray, getData, toBase64, toByteArray, toString, writeBytes

- Field Detail
  - BYTE_LENGTH
```
public static final int BYTE_LENGTH
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SessionTag
```
public SessionTag()
```
  - SessionTag
```
public SessionTag(boolean create)
```
    Parameters:
    
    create - if true, instantiate the data array and fill it with random data.
  - SessionTag
```
public SessionTag(byte[] val)
```
- Method Detail
  - length
```
public int length()
```
    Description copied from class: SimpleDataStructure
    
    The legal length of the byte array in this data structure
    
    Specified by:
    
    length in class SimpleDataStructure
  - setData
```
public void setData(byte[] data)
```
    Description copied from class: SimpleDataStructure
    
    Sets the data.
    
    Overrides:
    
    setData in class SimpleDataStructure
    
    Parameters:
    
    data - of correct length, or null
  - readBytes
```
public void readBytes(InputStream in)
               throws DataFormatException,
                      IOException
```
    Description copied from class: SimpleDataStructure
    
    Sets the data.
    
    Specified by:
    
    readBytes in interface DataStructure
    
    Overrides:
    
    readBytes in class SimpleDataStructure
    
    Parameters:
    
    in - the stream to read
    
    Throws:
    
    DataFormatException - if the data is improperly formatted
    
    IOException - if there was a problem reading the stream
  - hashCode
```
public int hashCode()
```
    SessionTags are generated both locally and by peers, in quantity, and are used as keys in several datastructures (see TransientSessionKeyManager), so we use a secure hashCode function.
    
    Overrides:
    
    hashCode in class SimpleDataStructure

Class SessionTag

Field Summary

Fields inherited from class net.i2p.data.SimpleDataStructure

Constructor Summary

Method Summary

Methods inherited from class net.i2p.data.DataStructureImpl

Methods inherited from class java.lang.Object

Methods inherited from class net.i2p.data.SimpleDataStructure

Field Detail

BYTE_LENGTH

Constructor Detail

SessionTag

SessionTag

SessionTag

Method Detail

length

setData

readBytes

hashCode