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Posted to dev@geronimo.apache.org by John Woolsey <jw...@activation.net> on 2004/09/01 04:13:50 UTC

Socket Fun

I am working on my RMI implementation and I was using the 
ObjectOutputStream. I made a function serialize that I used to find the 
length of the outbound data. Then I wrote the same object to a socket. 
The sizes where different ?!? Anyone have any idea why?

                                                                         
                           - thanx - JAW

Re: Socket Fun

Posted by John Woolsey <jw...@activation.net>.

Good idea but I am using different ObjectOutputStreams. The first one is 
to a byte array and the other is to a Socket Stream. The difference is 4 
bytes 179 for the socket and 174. I am going to guess it is a length 
variable that is added to the byte array stream. I have gone to 
completely serializing outside the socket stream which works, but I 
thought the difference was interesting and worth bringing up.

                                 - bfn - JAW

adam wrote:

> Referencing by ObjectOutputStream.  The second time you serialize the 
> object out over the stream, ObjectOutputStream replaces it with a 
> reference back to the one it just sent.  In one of the older JVMs, 
> this kept things that were serialized from being garbage collected, 
> although that's been fixed now.
>
> Adam
>
> John Woolsey wrote:
>
>> I am working on my RMI implementation and I was using the 
>> ObjectOutputStream. I made a function serialize that I used to find 
>> the length of the outbound data. Then I wrote the same object to a 
>> socket. The sizes where different ?!? Anyone have any idea why?
>>
>>                                                                         
>>                           - thanx - JAW
>>
>
>

Re: Socket Fun

Posted by adam <ad...@earthlink.net>.

Referencing by ObjectOutputStream.  The second time you serialize the 
object out over the stream, ObjectOutputStream replaces it with a 
reference back to the one it just sent.  In one of the older JVMs, this 
kept things that were serialized from being garbage collected, although 
that's been fixed now.

Adam

John Woolsey wrote:

> I am working on my RMI implementation and I was using the 
> ObjectOutputStream. I made a function serialize that I used to find 
> the length of the outbound data. Then I wrote the same object to a 
> socket. The sizes where different ?!? Anyone have any idea why?
>
>                                                                         
>                           - thanx - JAW
>