HTTPClient
Class MD5InputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--java.io.FilterInputStream
              |
              +--HTTPClient.MD5InputStream

class MD5InputStream

extends java.io.FilterInputStream

This class calculates a running md5 digest of the data read. When the stream is closed the calculated digest is passed to a HashVerifier which is expected to verify this digest and to throw an Exception if it fails.

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

MD5InputStream(java.io.InputStream is, HashVerifier verifier)

Method Summary

Type	Method
void	close() Close the stream and check the digest.
int	read()
int	read(byte[] buf, int off, int len)
long	skip(long num)

Methods inherited from class java.io.FilterInputStream

available, mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

MD5InputStream

public MD5InputStream(java.io.InputStream is,
                      HashVerifier verifier)

Parameters:

is - the input stream over which the md5 hash is to be calculated

verifier - the HashVerifier to invoke when the stream is closed

Method Detail

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

read

public int read(byte[] buf,
                int off,
                int len)
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

skip

public long skip(long num)
          throws java.io.IOException

Overrides:

skip in class java.io.FilterInputStream

close

public void close()
           throws java.io.IOException

Close the stream and check the digest. If the stream has not been fully read then the rest of the data will first be read (and discarded) to complete the digest calculation.

Overrides:

close in class java.io.FilterInputStream

Throws:

java.io.IOException - if the close()'ing the underlying stream throws an IOException, or if the expected digest and the calculated digest don't match.