Package org.conscrypt

Class SSLBufferedInput

java.lang.Object
java.io.InputStream
org.conscrypt.SSLInputStream
org.conscrypt.SSLBufferedInput
All Implemented Interfaces:
Closeable, AutoCloseable
public class SSLBufferedInput
extends SSLInputStream
This is a wrapper input stream for ByteBuffer data source. Among with the read functionality it provides info about number of cunsumed bytes from the source ByteBuffer. The source ByteBuffer object can be reseted. So one instance of this wrapper can be reused for several ByteBuffer data sources.

  • Constructor Details

    • SSLBufferedInput

      protected SSLBufferedInput()
      Constructor

  • Method Details

    • setSourceBuffer

      protected void setSourceBuffer​(ByteBuffer in)
      Sets the buffer as a data source

    • available

      public 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.

      Specified by:
      available in class SSLInputStream
      Returns:
      the estimated number of bytes available
      Throws:
      IOException - if this stream is closed or an error occurs

    • consumed

      protected int consumed()
      Returns the number of consumed bytes.

    • read

      public int read() throws IOException
      Reads the following byte value. If there are no bytes in the source buffer, method throws java.nio.BufferUnderflowException.
      Specified by:
      read in class SSLInputStream
      Throws:
      IOException - if the stream is closed or another IOException occurs.
      See Also:
      SSLStreamedInput.read(), read(), HandshakeIODataStream.read()