![](/media/cache/group/Mbed-100-mk2.png.50x50_q85.png)
This is a quick example of a simple HTTP client program using the network-socket API that is provided as a part of mbed-os. The program brings up an underlying network interface, and uses it to perform an HTTP transaction over a TCPSocket.
README.md
- Committer:
- mbed_official
- Date:
- 2018-07-24
- Revision:
- 53:0d44278430d3
- Parent:
- 49:1923a727df5b
- Child:
- 61:e61d4d810148
File content as of revision 53:0d44278430d3:
## Getting started with the network-socket API This is a quick example of a simple HTTP client program using the [network-socket API](https://os.mbed.com/docs/latest/reference/network-socket.html) that [Mbed OS](https://github.com/ARMmbed/mbed-os) provides. The program brings up an underlying network interface, and uses it to perform an HTTP transaction over a TCPSocket. ### Selecting the network interface This application is able to use any network inteface it finds. Please see the Mbed OS documentationg for [selecting the default network interface](https://os.mbed.com/docs/v5.9/reference/configuration-connectivity.html#selecting-the-default-network-interface). For example, building on Ethernet enabled boards, you do not do any configuration. Building for WiFi boards, you need to provide SSID, password and security settings in `mbed_app.json` as instructed in the documentation. For example, like this: ``` { "target_overrides": { "*": { "platform.stdio-convert-newlines": true, "target.network-default-interface-type": "WIFI", "nsapi.default-wifi-security": "WPA_WPA2", "nsapi.default-wifi-ssid": "\"ssid\"", "nsapi.default-wifi-password": "\"password\"" } } } ``` Building for boards that have more that one network interface, you might need to override `target.network-default-interface-type` variable. ### Building ``` mbed compile -t <toolchain> -m <target> ``` For example, building for K64F using GCC: `mbed compile -t GCC_ARM -m K64F` ### Expected output ### **Note:** The default serial port baud rate is 9600 bit/s. ``` IP address: 10.118.14.45 Netmask: 255.255.252.0 Gateway: 10.118.12.1 sent 39 [GET / HTTP/1.1] recv 173 [HTTP/1.1 200 OK] External IP address: 217.140.111.135 Done ``` ### Documentation ### More information on the network-socket API can be found in the [mbed handbook](https://docs.mbed.com/docs/mbed-os-api-reference/en/latest/APIs/communication/network_sockets/). ## Troubleshooting If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it.