IT. Expert System.

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

HandshakeIODataStream, SSLBufferedInput, SSLStreamedInput

public abstract class SSLInputStream
extends InputStream

• Constructor Summary

  Constructors

  Constructor and Description
  SSLInputStream()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  abstract int	available() Returns an estimated number of bytes that can be read or skipped without blocking for more input.
  abstract int	read() Reads the following byte value.
  int	read(byte[] b, int off, int len) Reads at most length bytes from this stream and stores them in the byte array b starting at offset.
  byte[]	read(int length) Returns the vector of opaque values of specified length;
  int	readUint16() Reads and returns uint16 value.
  int	readUint24() Reads and returns uint24 value.
  long	readUint32() Reads and returns uint32 value.
  long	readUint64() Reads and returns uint64 value.
  int	readUint8() Reads and returns uint8 value.

  • Methods inherited from class java.io.InputStream

    close, mark, markSupported, read, reset, skip

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • SSLInputStream

    public SSLInputStream()

• Method Detail

  • available

    public abstract int available()
                           throws IOException

    Description copied from class: InputStream
    Returns an estimated number of bytes that can be read or skipped without blocking for more input.

    Note that this method provides such a weak guarantee that it is not very useful in practice.

    Firstly, the guarantee is "without blocking for more input" rather than "without blocking": a read may still block waiting for I/O to complete — the guarantee is merely that it won't have to wait indefinitely for data to be written. The result of this method should not be used as a license to do I/O on a thread that shouldn't be blocked.

    Secondly, the result is a conservative estimate and may be significantly smaller than the actual number of bytes available. In particular, an implementation that always returns 0 would be correct. In general, callers should only use this method if they'd be satisfied with treating the result as a boolean yes or no answer to the question "is there definitely data ready?".

    Thirdly, the fact that a given number of bytes is "available" does not guarantee that a read or skip will actually read or skip that many bytes: they may read or skip fewer.

    It is particularly important to realize that you must not use this method to size a container and assume that you can read the entirety of the stream without needing to resize the container. Such callers should probably write everything they read to a ByteArrayOutputStream and convert that to a byte array. Alternatively, if you're reading from a file, File.length() returns the current length of the file (though assuming the file's length can't change may be incorrect, reading a file is inherently racy).

    The default implementation of this method in InputStream always returns 0. Subclasses should override this method if they are able to indicate the number of bytes available.

    Overrides:

    available in class InputStream

    Returns:

    the estimated number of bytes available

    Throws:

    IOException - if this stream is closed or an error occurs

  • read

    public abstract int read()
                      throws IOException

    Reads the following byte value. Note that in the case of reaching of the end of the data this methods throws the exception, not return -1. The type of exception depends on implementation. It was done for simplifying and speeding up of processing of such cases.

    Specified by:

    read in class InputStream

    Returns:

    the byte read or -1 if the end of stream has been reached.

    Throws:

    IOException - if the stream is closed or another IOException occurs.

    See Also:

    SSLStreamedInput.read(), SSLBufferedInput.read(), HandshakeIODataStream.read()

  • readUint8

    public int readUint8()
                  throws IOException

    Reads and returns uint8 value.

    Throws:

    IOException

  • readUint16

    public int readUint16()
                   throws IOException

    Reads and returns uint16 value.

    Throws:

    IOException

  • readUint24

    public int readUint24()
                   throws IOException

    Reads and returns uint24 value.

    Throws:

    IOException

  • readUint32

    public long readUint32()
                    throws IOException

    Reads and returns uint32 value.

    Throws:

    IOException

  • readUint64

    public long readUint64()
                    throws IOException

    Reads and returns uint64 value.

    Throws:

    IOException

  • read

    public byte[] read(int length)
                throws IOException

    Returns the vector of opaque values of specified length;

    Parameters:

    length - - the length of the vector to be read.

    Returns:

    the read data

    Throws:

    IOException - if read operation could not be finished.

  • read

    public int read(byte[] b,
           int off,
           int len)
             throws IOException

    Description copied from class: InputStream
    Reads at most length bytes from this stream and stores them in the byte array b starting at offset.

    Overrides:

    read in class InputStream

    Parameters:

    b - the byte array in which to store the bytes read.

    off - the initial position in buffer to store the bytes read from this stream.

    len - the maximum number of bytes to store in b.

    Returns:

    the number of bytes actually read or -1 if the end of the stream has been reached.

    Throws:

    IOException - if the stream is closed or another IOException occurs.