Protocl under "Protocol Buffers"

[Fred chen]

I want to know the communicate protocl under "Protocol Buffers". My
application calls for High performance, and the HTTP protocol may
cause problem. I know the RpcChannel is based on HTTP, and I want to
know if the HTTP is the basic of "Protocol Buffers".
Thanks

[Benjamin Wright]

Any data transfer mechanism can be used with protocol buffers.

I have used JMS, TCP, UDP, 'flat files', etc... it's just a matter of
grabbing the bytes (m.build().toByteArray() in java) and throwing them
on the appropriate stream. You can also output the protocol buffer
directly onto the output stream (m.build().writeTo(OutputStream) or
m.build().writeDelimitedTo(OutputStream))

[Marc Gravell]

Protocol buffers itself only (AFAIK) describes the serialisation format; it does not define RPC. If you add an http-based RPC stack, then it will be http-based, but that is nothing to do with protocol buffers, you could (and many do) use raw sockets just as well.

Marc

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