HTTP/HTTPS client Hello World application running with X-NUCLEO-IDW01M1v2 wifi board.
Dependencies: HTTPClient NetworkSocketAPI X_NUCLEO_IDW01M1v2 mbed
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Example of HTTP and HTTPS connections using X-NUCLEO-IDW01M1 Wi-Fi expansion board.
The application is meant to be used with mbed OS 2 ("Classic") only (no mbedOS 5 support).
For HTTPS connection it uses the TLS/SSL feature provided natively by the Wi-Fi module and performs secure connection to the server also verifying the server identity.
To avoid expired CA certificates, system time (in epoch) must be manually entered (e..g. using http://www.epochconverter.com/ ) .
Retrieval of current time from an NTP server is shown by this example.
main.cpp
- Committer:
- donatien
- Date:
- 2012-08-30
- Revision:
- 2:270e2d0bb85a
- Parent:
- 1:d263603373ac
- Child:
- 3:6e7a93483c12
File content as of revision 2:270e2d0bb85a:
#include "mbed.h" #include "EthernetInterface.h" #include "HTTPClient.h" EthernetInterface eth; HTTPClient http; char str[512]; int main() { eth.init(); //Use DHCP eth.connect(); //GET data printf("\nTrying to fetch page...\n"); int ret = http.get("http://mbed.org/media/uploads/donatien/hello.txt", str, 128); if (!ret) { printf("Page fetched successfully - read %d characters\n", strlen(str)); printf("Result: %s\n", str); } else { printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode()); } //POST data HTTPMap map; HTTPText inText(str, 512); map.put("Hello", "World"); map.put("test", "1234"); printf("\nTrying to post data...\n"); ret = http.post("http://httpbin.org/post", map, &inText); if (!ret) { printf("Executed POST successfully - read %d characters\n", strlen(str)); printf("Result: %s\n", str); } else { printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode()); } //PUT data strcpy(str, "This is a PUT test!"); HTTPText outText(str); //HTTPText inText(str, 512); printf("\nTrying to put resource...\n"); ret = http.put("http://httpbin.org/put", outText, &inText); if (!ret) { printf("Executed PUT successfully - read %d characters\n", strlen(str)); printf("Result: %s\n", str); } else { printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode()); } //DELETE data //HTTPText inText(str, 512); printf("\nTrying to delete resource...\n"); ret = http.del("http://httpbin.org/delete", &inText); if (!ret) { printf("Executed DELETE successfully - read %d characters\n", strlen(str)); printf("Result: %s\n", str); } else { printf("Error - ret = %d - HTTP return code = %d\n", ret, http.getHTTPResponseCode()); } eth.disconnect(); while(1) { } }