HTTPClient
Class MD5InputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          HTTPClient.MD5InputStream

class MD5InputStream

extends 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.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

MD5InputStream(InputStream is, HashVerifier verifier)

Method Summary

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(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 IOException

Throws:

IOException

read

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

Throws:

IOException

skip

public long skip(long num)
          throws IOException

Throws:

IOException

close

public void close()
           throws 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.

Throws:

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