Do we have any examples to use grpc in C

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yy...@pivotal.io

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Jan 26, 2016, 6:42:53 PM1/26/16
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Hi guys,

How to use grpc in C?

From thread history, the suggestion is to use C++. Understood this, while we need to use grpc in C as our existing code base is C.

Is it good to wrap grpc code in a shared library for our use case and call it from C? 

Or would suggest to use the low level C API with limited functionality?

Thanks a lot!

Nicolas Noble

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Feb 2, 2016, 7:11:14 PM2/2/16
to yy...@pivotal.io, grpc.io
Right now we don't have any example for using the C core directly, no. The reason being, the C core API is pretty rough. Ideally, we'd want to write some helper functions similar to what we have in the C++ layer, but we haven't gotten to that just yet.

I would suggest reading the C++ API layer, and see if you could use that as an example of how to use the C core directly. But that's going to be pretty rough, be warned.

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Yandong Yao

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Feb 2, 2016, 8:16:16 PM2/2/16
to Nicolas Noble, grpc.io
Thanks a lot, Nicolas!

So how about encapsulate all functionalities using C++, create a shared library using tricks at https://isocpp.org/wiki/faq/mixing-c-and-cpp, then call C++ grpc code from C code?  Do you see any potential problems?

Regards,
Yandong
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Best Regards,
Yandong

Nicolas Noble

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Feb 3, 2016, 2:35:49 AM2/3/16
to Yandong Yao, grpc.io
That... will work, sure. That wouldn't be pretty, but it'll work.

Yandong Yao

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Feb 3, 2016, 3:09:09 AM2/3/16
to Nicolas Noble, grpc.io
Thanks Nicolas!
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Best Regards,
Yandong

kpele...@gmail.com

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Apr 11, 2017, 1:02:53 PM4/11/17
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Hello,

I was wondering if there is an update on this subject. Is it possible to use gRPC with C? Thank you.

Regards,
Kostas

Craig Tiller

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Apr 11, 2017, 2:00:12 PM4/11/17
to kpele...@gmail.com, grpc.io, yy...@pivotal.io
Juniper has a library that might help you: https://github.com/juniper/grpc-c


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Kostas

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Apr 12, 2017, 8:29:47 AM4/12/17
to Craig Tiller, grpc.io, yy...@pivotal.io
Grpc-c seems to be what I am looking for.

There are some build issues at the moment (it's still pre-alpha according to the developers) but it's definitely something to keep an eye on. Thanks Craig! :-)

Regards,
Kostas

On 11 April 2017 at 18:59, Craig Tiller <cti...@google.com> wrote:
Juniper has a library that might help you: https://github.com/juniper/grpc-c


On Tue, Apr 11, 2017 at 10:02 AM <kpele...@gmail.com> wrote:
Hello,

I was wondering if there is an update on this subject. Is it possible to use gRPC with C? Thank you.

Regards,
Kostas


On Tuesday, 26 January 2016 23:42:53 UTC, yyd...@gmail.com wrote:
Hi guys,

How to use grpc in C?

From thread history, the suggestion is to use C++. Understood this, while we need to use grpc in C as our existing code base is C.

Is it good to wrap grpc code in a shared library for our use case and call it from C? 

Or would suggest to use the low level C API with limited functionality?

Thanks a lot!

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ajhai

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Apr 12, 2017, 5:16:06 PM4/12/17
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Hi Kostas,

 I'm one of the developers of grpc-c. We will be pushing changes to grpc-c hopefully towards end of this month and they should bring this repo to alpha state where people can start trying it out easily.

Thanks,
Ajay


On Wednesday, April 12, 2017 at 5:29:47 AM UTC-7, Kostas wrote:
Grpc-c seems to be what I am looking for.

There are some build issues at the moment (it's still pre-alpha according to the developers) but it's definitely something to keep an eye on. Thanks Craig! :-)

Regards,
Kostas
On 11 April 2017 at 18:59, Craig Tiller <cti...@google.com> wrote:
Juniper has a library that might help you: https://github.com/juniper/grpc-c


On Tue, Apr 11, 2017 at 10:02 AM <kpele...@gmail.com> wrote:
Hello,

I was wondering if there is an update on this subject. Is it possible to use gRPC with C? Thank you.

Regards,
Kostas


On Tuesday, 26 January 2016 23:42:53 UTC, yyd...@gmail.com wrote:
Hi guys,

How to use grpc in C?

From thread history, the suggestion is to use C++. Understood this, while we need to use grpc in C as our existing code base is C.

Is it good to wrap grpc code in a shared library for our use case and call it from C? 

Or would suggest to use the low level C API with limited functionality?

Thanks a lot!

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Kostas

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Apr 13, 2017, 12:30:34 PM4/13/17
to ajhai, grpc.io, cti...@google.com, yy...@pivotal.io
Hi Ajay,

This is very good news, thanks for letting me know. Looking forward to trying the alpha code.

Regards,
Kostas
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nikitan...@gmail.com

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Oct 25, 2017, 8:07:27 AM10/25/17
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Hi Ajay,

Could you please point me to the C implementation of gRPC? I am trying to compile the grpc implementation from github but it looks broken. Also pointer to the documentation which will cover the QuickStart and developer reference.

Thanks in advance.

Regards,
Nikita

ajhai

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Oct 25, 2017, 5:51:27 PM10/25/17
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Hi Nikita,

 You can find the project at https://github.com/juniper/grpc-c. You will need gRPC v1.3.0 and protobuf 3. Look at README and examples/ for usage. Please note that this library is still pre alpha.

Thanks,
Ajay

nikitan...@gmail.com

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Oct 30, 2017, 6:23:06 AM10/30/17
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Hi Ajay,

I tried compiling the Juniper C implementation for gRPC but could not get through. I have posted the issue on github repository. Also I want to replace protoc-C by nanoPB to have a C implementation of the entire stack. Have you tried that? Are you known of any repository which has implemented gRPC on top of HTTP2 and proto/json in C.

Thank you!

ajhai

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Oct 31, 2017, 9:46:27 PM10/31/17
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Can you check the thread at https://github.com/Juniper/grpc-c/issues/19 ? What is the version of protobuf you have installed on your Mac? I haven't tried using nanopb. It was tried before though directly with grpc. Look at https://github.com/grpc/grpc/pull/7670 and https://github.com/grpc/grpc/pull/7531 .

Thanks,
Ajay

Prashant Shubham

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Aug 20, 2018, 6:09:42 AM8/20/18
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Can anyone guide how to write C wrapper class for grpc?  

qimi...@gmail.com

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Jan 8, 2020, 4:40:39 AM1/8/20
to grpc.io
Hi Ajay,
I got a proble while trying to run the example, 
client code like this:
for(i = 0; i < 1000; i ++)
   foo__greeter__say_hello(...)
}

after running hundreds of times, the server crash ,  "doube free" .
do you have any idea about this problem?

Thanks a lot!

Ashique C K

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May 4, 2021, 5:58:13 AMMay 4
to grpc.io
Hi,
By using this command protoc --c_out=. foo.proto, it will generate foo.pb-c.c, foo.pb-c.h fiiles.
What is the command to generate grpc file too. For that we need grpc C plugin right ?
From where I can get that ?
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