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From Ortwin Gl├╝ck <...@odi.ch>
Subject Re: java.io.StreamCorruptedException when a sending huge java object...
Date Fri, 10 Nov 2006 08:38:01 GMT
Suraj,

The problem is not caused by HttpClient, but because you are using the 
IO API incorrectly.

Suraj Natarajan wrote:
> int len = httpRequest.getContentLength();
> InputStream is = httpRequest.getInputStream();
> byte[] b = new byte[len] ;
> // read the entire content in one shot
> is.read(b);

Please read the API Doc of the read method. The method does not 
guarantee to read a specific number of bytes, but it will return the 
number of bytes read as an int. You must repeatedly read from the stream 
until read() returns -1.

> // construct the java object from the byte[]
> deserialize(b) ;
> 
> If the request content length is big around 25K then a
> java.io.StreamCorruptedException is thrown during deserialization. This
> only happens when the content length is big.
> 
> 
> If the stream is read using the code below then it works fine even for
> huge content length.
> InputStream is = httpRequest.getInputStream();
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> while ((read = bis.read(buffer)) != -1) {
>   baos.write(buffer, 0, read);
> }
> deserialize(baos.toByteArray());

This is exactly the correct way of reading from a stream.

> 
> Can someone please explain the problem and is there a better way do
> this?
> 
> Thanks in advance.

YAW

Ortwin

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