#grpc

ejona, thanks for answering, I havent been infront of the computer until now

I have read through the tutorial code (c++ code) but I don't understand it

I need directions, I have the tools, but where should I start?

well, you can ask questions here, or on the mailing list :)

if you have a packet of questions, better post it on the mailing list so we can answer in a big chunk

well, the simple question is where do I begin?

should I define a .proto file first?

so... okay, hm

that's more of a philosophical question

the .proto file is your data structure

some programmers want to lay out their data structure before programming

some others want to get the peripheral stuff done before getting into the data structure

I'm more of a data structure first kind of guy, so in my view, yes, starting with your .proto sounds good to me

we are on the same page there, I like to make a structure first too

but what do I do with the .proto file then (my application should be architecture independent)

so the idea of the .proto file is to "compile" it

it'll generate a source file for the language of your choice

so basically your workflow should be to set up some toolchain

ohh... that's how it works, nice

to have the .proto file compile into a source code, then into your project

there's examples in our example Makefile for this

you said C++ so https://github.com/grpc/grpc/blob/master/exampl...

but there are examples for the other languages azs well

then you'll get a C++ structure that'll contain roughly the same things as what you laid out in the .proto file

now I understand what I did not understand

thansk

sure :)

thanks*

just for the sake of asking, how much overhead is there in the protocol compared to XMPP (I know it makes no sense comparing... but in any way)

so "which" protocol ? :)

qrpc ;)

so gRPC itself is 5 bytes on the wire

that's it

but gRPC itself isn't really a lot, when you think about it

the two big bulks are above and below it

sounds nice

is it encrypted by default?

basically you have HTTP2 as the transport for gRPC

which is really not like HTTP1 at all

it's a binary protocol, highly optimized for bandwidth and speed

I like that

HTTP2 works by being encrypted by default - all browsers that are implementing HTTP2 refuse to work without SSL

gRPC by default will use SSL too, but you can set up an unsecure channel, if you are explicit about it

can I stream through it?

yes - HTTP2 and gRPC handle streaming calls

nice, very nice

then you have protobuf

which is the serialization of your data

that is also binary

my next question is, why havent I heard of this before? ;)

you weren't paying enough attention ? :P

I think you'er on to something ;)

where is that cmake macro is defined ? protobuf_generate_cpp

k found it, is in FindProtobuf.cmake

Is there a way to get Request body in gRPC as byte stream/array?

.String() gives CompactTextString but how do you map it back to request or proto?

Any possibily to build a version of grpc-java that shades netty dependencies?

how can I define a service that only extern a return ? ie rpc GetNC (void) returns (NCInfo) {}

Lighta: use "Empty" for "void"