English | 简体中文
The author's native language is Chinese. This document is translated using AI.
IoT device SDK in C for RTIO service connectivity.
Install build tools and demo dependencies on Debian-11, for example.
sudo apt updte
sudo apt install gcc g++ make cmake
sudo apt install openssl libssl-devCompile the demo.
$ git clone https://github.com/mkrainbow/rtio-device-sdk-c.git
$ cd rtio-device-sdk-c/
$ cmake -S . -B build
$ cd build/
$ make
# ...
[100%] Linking C executable ...You can run the RTIO server either through "Docker" or by compiling from source.
$ sudo docker pull registry.cn-guangzhou.aliyuncs.com/rtio/rtio:v0.8.0
v0.8.0: Pulling from rtio/rtio
...
Digest: sha256:...
$ sudo docker run --rm -p 17017:17017 -p 17917:17917 registry.cn-guangzhou.aliyuncs.com/rtio/rtio:v0.8.0
2024-06-03 13:12:23.264 INF rtio starting ...You can log into the container using the following command, for example, to view the command help.
$ sudo docker run -it --rm --entrypoint /bin/sh -p 17017:17017 -p 17917:17917 registry.cn-guangzhou.aliyuncs.com/rtio/rtio:v0.8.0
/home/rainbow $ ./rtio -h
Usage of ./rtio:
...（Use "$" instead of "#" in code blocks to avoid the command being rendered as a comment. The same applies to the following text.）
Tools required:
- Golang: version 1.21.0 or higher (installation steps: https://go.dev/doc/install).
- GNU Make: version 4.3 or higher recommended.
- Git.
Get the code.
git clone https://github.com/mkrainbow/rtio.git
cd rtio
makeRun the service using the following command, and use ./out/rtio -h for help.
$ ./out/rtio -disable.deviceverify -disable.hubconfiger -log.level info
2024-12-19 17:07:14.198 INF rtio starting ...$ cd bin/
$ ./rtio_demo_simple
[INFO] [DEMO_RTIO] [1734767058] [rtio_demo_simple.c:64 main] RTIO server=localhost:17017.
[DEBUG] [DEMO_RTIO] [1734767058] [rtio_demo_simple.c:66 main] The fixed RAM used by RTIO, size=2072 bytes.In another terminal, use curl to simulate a request to the device URI /rainbow. Here, the curl request sends "hello", and the response is "World!" (since the data field is binary, it is base64-encoded before HTTP transmission).
$ echo -n "Hello"| base64
SGVsbG8=
$ curl http://localhost:17917/cfa09baa-4913-4ad7-a936-3e26f9671b10 -d '{"method":"copost", "uri":"/rainbow","id":12668,"data":"aGVsbG8="}'
{"id":12668,"fid":0,"code":"OK","data":"V29ybGQh"}
$ echo -n "V29ybGQh"| base64 -d
World!The device-side log shows the received request data "Hello".
[INFO] [DEMO_RTIO] [1734767083] [rtio_demo_simple.c:31 uriRainbow] Handling the copost req with uri=/rainbow, pReqData=hello.The demo successfully sent a copost request to the device's /rainbow endpoint, and successfully transmitted the request and response data (the device doesn't need to base64 encode/decode, the rtio service handles the conversion).
The RTIO server needs to enable TLS device access. The following example uses Docker.
First, enter interactive mode.
$ sudo docker run -it --entrypoint /bin/sh --rm -p 17017:17017 -p 17917:17917 registry.cn-guangzhou.aliyuncs.com/rtio/rtio:v0.8.0
/home/rainbow $ ls
certificates rtio # ...Run RTIO and enable TLS.
/home/rainbow $ ./rtio -disable.deviceverify -disable.hubconfiger -enable.hub.tls -hub.tls.certfile ./certificates/demo_server.crt -hub.tls.keyfile ./certificates/demo_server.key -log.level info
2024-12-24 09:39:38.337 INF rtio starting ...
2024-12-24 09:39:38.337 INF TLS access enabledIn another terminal, run rtio_demo_tls. Note that it should be run from the build/bin/ directory, as the code references the certificate location certificates/RTIORootCA.crt.
$ cd bin/
$ ./rtio_demo_tls
[INFO] [DEMO_RTIO_TLS] [1735034352] [rtio_demo_tls.c:77 main] RTIO server=localhost:17017.
[DEBUG] [DEMO_RTIO_TLS] [1735034352] [rtio_demo_tls.c:79 main] The fixed RAM used by RTIO, size=2072 bytes.In another terminal, use curl to simulate a request to the device URI /rainbow. Here, the curl request sends "hello", and the response is "World!" (since the data field is binary, it is base64-encoded before HTTP transmission).
$ curl http://localhost:17917/cfa09baa-4913-4ad7-a936-3e26f9671b10 -d '{"method":"copost", "uri":"/rainbow","id":12668,"data":"aGVsbG8="}'
{"id":12668,"fid":0,"code":"OK","data":"V29ybGQh"}The device-side log shows the received request data "Hello".
[INFO] [DEMO_RTIO_TLS] [1735034642] [rtio_demo_tls.c:37 uriRainbow] Handling the copost req with uri=/rainbow, pReqData=hello.The following example is for integrating with the POSIX platform using rtio_demo_simple. Copy rtio_demo_simple and rtio-device-sdk-c into the same directory.
$ cp -r rtio-device-sdk-c/demos-posix/rtio/rtio_demo_simple ./
$ ls -d rtio-device-sdk-c rtio_demo_simple
rtio-device-sdk-c rtio_demo_simple
$ cd rtio_demo_simple/
$ ls
CMakeLists.txt core_rtio_config.h demo_config.h rtio_demo_simple.cModify the CMakeLists.txt to reference the required cmake files.
# ...
# Get root dirs and the cmake-files it depends on.
include( "../../demosRoot.cmake" )
include( "${RTIO_SDK_ROOT_DIR}/tools/cmake/rtioSDK_POSIX_Plaintext.cmake" )
include( "${PLATFORM_DEMOS_ROOT_DIR}/logging-stack/logging.cmake" )Replace with the following:
# ...
# Get root dirs and the cmake-files it depends on.
include( "../rtio-device-sdk-c/tools/cmake/rtioSDK_POSIX_Plaintext.cmake" )
include( "../rtio-device-sdk-c/demos-posix/logging-stack/logging.cmake" )Use cmake and make to build the program:
$ cmake -S . -B build
# ...
-- Configuring done
-- Generating done
-- Build files have been written to: ...
$ cd build/
$ make
# ...
[100%] Built target rtio_demo_simpleFor non-POSIX platforms, refer to the Demo in demos-esp32 for setup instructions.
This project is developed based on aws-iot-device-sdk-embedded-C (202211.00, MIT license), with the coreRTIO project added. Thanks to the project authors and contributors.