public  void flush() throws IOException
Flushes this session buffer and forces any buffered output bytes 
to be written out. The general contract of flush is 
that calling it is an indication that, if any bytes previously 
written have been buffered by the implementation of the output 
stream, such bytes should immediately be written to their 
intended destination.

 public HttpTransportMetrics getMetrics()
Returns HttpTransportMetrics  for this session buffer.

 public  void write(byte[] b) throws IOException
Writes b.length bytes from the specified byte array 
to this session buffer.

 public  void write(int b) throws IOException
Writes the specified byte to this session buffer.

 public  void write(byte[] b,
    int off,
    int len) throws IOException
Writes len bytes from the specified byte array 
starting at offset off to this session buffer.

If off is negative, or len is negative, or 
off+len is greater than the length of the array 
b, then an IndexOutOfBoundsException is thrown.

 public  void writeLine(String s) throws IOException
Writes characters from the specified string followed by a line delimiter 
to this session buffer.

The choice of a char encoding and line delimiter sequence is up to the 
specific implementations of this interface.

 public  void writeLine(CharArrayBuffer buffer) throws IOException
Writes characters from the specified char array followed by a line 
delimiter to this session buffer.

The choice of a char encoding and line delimiter sequence is up to the 
specific implementations of this interface.