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## net.i2p.sam
Class SAMHandler

    java.lang.Object
      net.i2p.sam.SAMHandler

All Implemented Interfaces:
  Runnable

Direct Known Subclasses:
  SAMv1Handler

    public abstract class SAMHandler

extends Object
implements Runnable

Base class for SAM protocol handlers. It implements common methods, but is not able to actually parse the protocol itself: this task is delegated to subclasses.

Author:
  human

Field Summary
`protected SAMBridge` | `bridge`
`protected Properties` | `i2cpProps` I2CP options configuring the I2CP connection (port, host, numHops, etc)
`protected SocketChannel` | `socket`
`protected I2PAppThread` | `thread`
`protected int` | `verMajor`
`protected int` | `verMinor`

Constructor Summary
`protected` | `SAMHandler(SocketChannel s, int verMajor, int verMinor, Properties i2cpProps)` SAMHandler constructor (to be called by subclasses)

Method Summary
`protected void` | `closeClientSocket()` Close the socket connected to the SAM client.
`protected SocketChannel` | `getClientSocket()` Get the input stream of the socket connected to the SAM client
`protected Object` | `getWriteLock()` If you're crazy enough to write to the raw socket, grab the write lock with getWriteLock(), synchronize against it, and write to the getOut()
`protected abstract void` | `handle()` Actually handle the SAM protocol.
`void` | `run()`
`void` | `setBridge(SAMBridge bridge)`
`protected boolean` | `shouldStop()` Should the handler be stopped?
`void` | `startHandling()` Start handling the SAM connection, detaching an handling thread.
`void` | `stopHandling()` Stop the SAM handler
`String` | `toString()` Get a string describing the handler.
`protected void` | `writeBytes(ByteBuffer data)` Write a byte array on the handler's socket.
`static void` | `writeBytes(ByteBuffer data, SocketChannel out)`
`protected boolean` | `writeString(String str)` Write a string to the handler's socket.
`static boolean` | `writeString(String str, SocketChannel out)`

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

Field Detail

### thread

    protected I2PAppThread thread

### bridge

    protected SAMBridge bridge

### socket

    protected SocketChannel socket

### verMajor

    protected int verMajor

### verMinor

    protected int verMinor

### i2cpProps

    protected Properties i2cpProps

  I2CP options configuring the I2CP connection (port, host, numHops, etc)

Constructor Detail

### SAMHandler

    protected SAMHandler(SocketChannel s,
                         int verMajor,
                         int verMinor,
                         Properties i2cpProps)
                  throws IOException

  SAMHandler constructor (to be called by subclasses)

  Parameters:
    `s` - Socket attached to a SAM client
    `verMajor` - SAM major version to manage
    `verMinor` - SAM minor version to manage
    `i2cpProps` - properties to configure the I2CP connection (host, port, etc)
  Throws:
    `IOException`

Method Detail

### startHandling

    public final void startHandling()

  Start handling the SAM connection, detaching an handling thread.

### setBridge

    public void setBridge(SAMBridge bridge)

### handle

    protected abstract void handle()

  Actually handle the SAM protocol.

### getClientSocket

    protected final SocketChannel getClientSocket()

  Get the input stream of the socket connected to the SAM client

  Returns:
    input stream
  Throws:
    `IOException`

### writeBytes

    protected final void writeBytes(ByteBuffer data)
                             throws IOException

  Write a byte array on the handler's socket. This method must always be used when writing data, unless you really know what you're doing.

  Parameters:
    `data` - A byte array to be written
  Throws:
    `IOException`

### writeBytes

    public static void writeBytes(ByteBuffer data,
                                  SocketChannel out)
                           throws IOException

  Throws:
    `IOException`

### getWriteLock

    protected Object getWriteLock()

  If you're crazy enough to write to the raw socket, grab the write lock with getWriteLock(), synchronize against it, and write to the getOut()

  Returns:
    socket Write lock object

### writeString

    protected final boolean writeString(String str)

  Write a string to the handler's socket. This method must always be used when writing strings, unless you really know what you're doing.

  Parameters:
    `str` - A byte array to be written
  Returns:
    True if the string was successfully written, false otherwise

### writeString

    public static boolean writeString(String str,
                                      SocketChannel out)

### closeClientSocket

    protected final void closeClientSocket()
                                    throws IOException

  Close the socket connected to the SAM client.

  Throws:
    `IOException`

### stopHandling

    public final void stopHandling()

  Stop the SAM handler

### shouldStop

    protected final boolean shouldStop()

  Should the handler be stopped?

  Returns:
    True if the handler should be stopped, false otherwise

### toString

    public final String toString()

  Get a string describing the handler.

  Overrides:
    `toString` in class `Object`
  Returns:
    A String describing the handler;

### run

    public final void run()

  Specified by:
    `run` in interface `Runnable`

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