No you cant, on C++ bytes translates to string, wont allow for null.

Regards,
Sumit Kumar

On 14 Mar, 2013, at 2:39 AM, Feng Xiao <xiaof...@google.com> wrote:

> You can just use bytes field.
> 
> On Wed, Mar 13, 2013 at 5:38 AM, Giri Guntipalli <giri.guntipa...@gmail.com> 
> wrote:
>> we need similar thing to hold binary data in proto message, where i can not 
>> use string because binary data may have the null character in middle
>> 
>> 
>> 
>> On Tuesday, 29 January 2013 14:30:31 UTC+5:30, prot...@googlecode.com wrote:
>>> 
>>> 
>>> Comment #3 on issue 269 by xiaof...@google.com: Would like to have byte or  
>>>  
>>> int8 type for the message definition 
>>> http://code.google.com/p/protobuf/issues/detail?id=269 
>>> 
>>> Re kumar.sumit: 
>>> How are you going to use the byte field to implement a fixed length string? 
>>>   
>>> If byte can, why can't int32?
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