![](/media/cache/group/Dangerous-Situations26.png.50x50_q85.jpg)
HTTP and HTTPS example application for Mbed OS 5
Dependencies: mbed-http
This application demonstrates how to make HTTP and HTTPS requests and parse the response from Mbed OS 5.
It consists of six example applications, which you can select in source/select-demo.h
:
- HTTP:
- Does a GET request to http:httpbin.org/status/418.
- Does a POST request to http:httpbin.org/post.
- HTTPS:
- Does a GET request to https:os.mbed.com/media/uploads/mbed_official/hello.txt.
- Does a POST request to https:httpbin.org/post.
- HTTP with socket re-use.
- HTTPS with socket re-use.
- HTTP over IPv6.
- HTTPS with chunked requests.
Response parsing is done through nodejs/http-parser.
Note: HTTPS requests do not work on targets with less than 128K of RAM due to the size of the TLS handshake. For more background see mbed-http.
To build
- If you're using WiFi, specify the credentials in
mbed_app.json
. - Build the project in the online compiler or using Mbed CLI.
- Flash the project to your development board.
- Attach a serial monitor to your board to see the debug messages.
Defining the network interface
This application uses the on-board network interface for your board. If you use an external network interface (f.e. a WiFi module) you need to add the driver to this project. Then, open network-helper.h
and specify which network driver to use.
More information is in the Mbed OS documentation under IP Networking.
Entropy (or lack thereof)
On all platforms that do not have the TRNG
feature, the application is compiled without TLS entropy sources. This means that your code is inherently unsafe and should not be deployed to any production systems. To enable entropy, remove the MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
and MBEDTLS_TEST_NULL_ENTROPY
macros from mbed_app.json.
Flash size
Default flash size for HTTPS is very large, as the application is loading the default Mbed TLS configuration. To use a more optimized version, you can disable unused cypher suites and other Mbed TLS features with a custom configuration file. Create a new configuration file, then add in mbed_app.json
:
"MBEDTLS_CONFIG_FILE=\"mbedtls_config.h\""
to the macros
array.
Running tests
You can run the integration tests from this project via Mbed CLI.
- In
select-demo.h
set theDEMO
macro toDEMO_TESTS
. - Set your WiFi credentials in
mbed_app.json
. - Then run the tests via:
$ mbed test -v -n mbed-http-tests-tests-*
Tested on
- K64F with Ethernet.
- NUCLEO_F411RE with ESP8266 (not working on Mbed OS 5.12+)
- ODIN-W2 with WiFi.
- K64F with Atmel 6LoWPAN shield.
- DISCO-L475VG-IOT01A with WiFi (requires the wifi-ism43362 driver).
README.md@2:4b4ac59ff9b0, 2017-02-16 (annotated)
- Committer:
- Jan Jongboom
- Date:
- Thu Feb 16 11:48:57 2017 +0100
- Revision:
- 2:4b4ac59ff9b0
- Parent:
- 0:85fdc69bc10c
- Child:
- 4:27fd8efb5bab
Move mbed-http into a separate library
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Jan Jongboom |
0:85fdc69bc10c | 1 | # mbed-os-example-http(s) |
Jan Jongboom |
0:85fdc69bc10c | 2 | |
Jan Jongboom |
0:85fdc69bc10c | 3 | This application demonstrates how to make HTTP and HTTPS requests and parse the response from mbed OS 5. |
Jan Jongboom |
0:85fdc69bc10c | 4 | |
Jan Jongboom |
0:85fdc69bc10c | 5 | It consists of two demo's, which you can select in ``source/select-demo.h``. |
Jan Jongboom |
0:85fdc69bc10c | 6 | |
Jan Jongboom |
0:85fdc69bc10c | 7 | * HTTP demo |
Jan Jongboom |
0:85fdc69bc10c | 8 | * Does a GET request to [http://httpbin.org/status/418](http://httpbin.org/status/418). |
Jan Jongboom |
0:85fdc69bc10c | 9 | * Does a POST request to [http://httpbin.org/post](http://httpbin.org/post). |
Jan Jongboom |
0:85fdc69bc10c | 10 | * HTTPS demo |
Jan Jongboom |
0:85fdc69bc10c | 11 | * Does a GET request to [https://developer.mbed.org/media/uploads/mbed_official/hello.txt](https://developer.mbed.org/media/uploads/mbed_official/hello.txt). |
Jan Jongboom |
0:85fdc69bc10c | 12 | |
Jan Jongboom |
0:85fdc69bc10c | 13 | Response parsing is done through [nodejs/http-parser](https://github.com/nodejs/http-parser). |
Jan Jongboom |
0:85fdc69bc10c | 14 | |
Jan Jongboom |
0:85fdc69bc10c | 15 | ## To build |
Jan Jongboom |
0:85fdc69bc10c | 16 | |
Jan Jongboom |
0:85fdc69bc10c | 17 | 1. Open ``mbed_app.json`` and change the `network-interface` option to your connectivity method ([more info](https://github.com/ARMmbed/easy-connect)). |
Jan Jongboom |
0:85fdc69bc10c | 18 | 2. Build the project in the online compiler or using mbed CLI. |
Jan Jongboom |
0:85fdc69bc10c | 19 | 3. Flash the project to your development board. |
Jan Jongboom |
0:85fdc69bc10c | 20 | 4. Attach a serial monitor to your board to see the debug messages. |
Jan Jongboom |
0:85fdc69bc10c | 21 | |
Jan Jongboom |
0:85fdc69bc10c | 22 | ## Entropy (or lack thereof) |
Jan Jongboom |
0:85fdc69bc10c | 23 | |
Jan Jongboom |
2:4b4ac59ff9b0 | 24 | On all platforms **except** the FRDM-K64F and FRDM-K22F the application is compiled without TLS entropy sources. This means that your code is inherently unsafe and should not be deployed to any production systems. To enable entropy, remove the `MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES` and `MBEDTLS_TEST_NULL_ENTROPY` macros from mbed_app.json. |
Jan Jongboom |
0:85fdc69bc10c | 25 | |
Jan Jongboom |
0:85fdc69bc10c | 26 | ## Tested on |
Jan Jongboom |
0:85fdc69bc10c | 27 | |
Jan Jongboom |
0:85fdc69bc10c | 28 | * K64F with Ethernet. |
Jan Jongboom |
0:85fdc69bc10c | 29 | * NUCLEO_F411RE with ESP8266. |