This is a short library for ESP8266(EX) chips to make HTTP requests.
- Easy to use.
- Supports multiple requests in parallel.
- Supports POST,GET,PUT,DELETE and user defined RAW requests.
- Tested with Espressif SDK v1.0.0, V1.3.0, V1.4.0
If you don't have a toolchain yet, install one with https://github.com/pfalcon/esp-open-sdk then get Espressif's SDK.
If your project looks like esphttpd from Sprite_tm:
git clone http://git.spritesserver.nl/esphttpd.git/
cd esphttpd
git submodule add https://github.com/Caerbannog/esphttpclient.git lib/esphttpclient
git submodule update --initNow append lib/esphttpclient to the following Makefile line and you should be ready:
MODULES = driver user lib/esphttpclient
In case you want to use SSL don't forget to add ssl to LIBS in the Makefile
LIBS = c gcc hal pp phy net80211 lwip wpa main ssl
Alternatively you could create a simple project:
git clone https://github.com/esp8266/source-code-examples.git
cd source-code-examples/basic_example
# Set your Wifi credentials in user_config.h
# I could not test this because of the UART baud rate (74880)Then download this library and move the files to user/:
git clone https://github.com/Caerbannog/esphttpclient.git
mv esphttpclient/*.* user/Include httpclient.h from user_main.c then call one of these functions:
void http_request(const char * url, const char * method, const char * headers, const char * post_data, http_callback_t callback_handle);
void http_post(const char * url, const char * headers, const char * post_data, http_callback_t callback_handle);
void http_get(const char * url, const char * headers, http_callback_t callback_handle);
void http_delete(const char * url, const char * headers, const char * post_data, http_callback_t callback_handle);
void http_put(const char * url, const char * headers, const char * post_data, http_callback_t callback_handle);
void http_callback_example(char * response, int http_status, char * full_response)
{
os_printf("http_status=%d\n", http_status);
if (http_status != HTTP_STATUS_GENERIC_ERROR) {
os_printf("strlen(full_response)=%d\n", strlen(full_response));
os_printf("response=%s<EOF>\n", response);
}
}The following code performs a single request, then calls http_callback_example to display your public IP address.
http_get("http://wtfismyip.com/text", "", http_callback_example);The output looks like this:
http_status=200
strlen(full_response)=244
response=208.97.177.124
<EOF>
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