I looked at the protobuf-net source a little bit and it looks like if
you write the length with WriteLittleEndian32 instead of WriteVarint32
you should be good to go, as long as you use PrefixStyle.Fixed32
within the C# call to DeserialzeWithLengthPrefix().
--Pete
On Mon, Aug 24, 2009 at 4:17 PM, Jay Thomas<jaydianetho...@gmail.com> wrote:
>
> This code ideally has to operate with C# code on the other side of the
> socket that uses the DeserializeWithLengthPrefix() method call. The
> message originates in C++ environment on a linux box and terminates in
> C# environment on a windows PC. Why doesn't C++ support the same
> methods as C#? The only document that I've seen that has list of
> methods available is the message.h header file, installed into my
> Linux usr directory.
>
>
> On Aug 24, 4:05 pm, Peter Keen <peter.k...@gmail.com> wrote:
>> You sort of have to roll your own. In my project I'm doing something like
>> this:
>>
>> coded_output->WriteVarint32(message->ByteSize());
>> message->SerializeToCodedStream(coded_output);
>>
>> And then on the reading side:
>>
>> uint32_t size;
>> if (! coded_input->ReadVarint32(&size)) {
>> return NULL; // just an example. probably don't want to do this;
>>
>> }
>>
>> Message * m = new Message;
>> CodedInputStream::Limit limit = coded_input->PushLimit(size);
>> message->ParseFromCodedStream(coded_input);
>> coded_input->PopLimit(limit);
>>
>> The biggest thing that helped me along was finding the Limit docs. I
>> couldn't figure out how to parse from a ZeroCopyInputStream without
>> consuming the entire stream, and then I ran across that and everything
>> became much more clear.
>>
>> --Pete
>>
>> On Mon, Aug 24, 2009 at 3:54 PM, Jay Thomas<jaydianetho...@gmail.com> wrote:
>>
>> > Hello
>>
>> > I am looking for a way to serialize/deserialize with length prefix
>> > under c++. The serialized bytes will sent to a TCP socket. I am
>> > aware that C# has a method SerializeWithLengthPrefix() and
>> > DeserializeWithLengthPrefix(). Are there any such analogous methods
>> > for C++? Please point out any documentation that I may have missed
>> > here.
>>
>> > Thanks for any assistance.
>>
>> > Jay
> >
>
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