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79 lines
2.3 KiB
79 lines
2.3 KiB
9 years ago
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# esphttpclient
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This is a short library for ESP8266(EX) chips to make HTTP requests.
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## Features
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* Easy to use.
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* Supports multiple requests in parallel.
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* Supports GET and POST requests.
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* Tested with Espressif SDK v1.0.0
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## Building
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If you don't have a toolchain yet, install one with <https://github.com/pfalcon/esp-open-sdk> then get Espressif's SDK.
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### The submodule way
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If your project looks like esphttpd from Sprite_tm:
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```bash
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git clone http://git.spritesserver.nl/esphttpd.git/
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cd esphttpd
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git submodule add https://github.com/Caerbannog/esphttpclient.git lib/esphttpclient
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git submodule update --init
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```
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Now append `lib/esphttpclient` to the following `Makefile` line and you should be ready:
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```
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MODULES = driver user lib/esphttpclient
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```
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In case you want to use SSL don't forget to add `ssl` to `LIBS` in the `Makefile`
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```
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LIBS = c gcc hal pp phy net80211 lwip wpa main ssl
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```
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### The dirty way
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Alternatively you could create a simple project:
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```bash
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git clone https://github.com/esp8266/source-code-examples.git
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cd source-code-examples/basic_example
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# Set your Wifi credentials in user_config.h
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# I could not test this because of the UART baud rate (74880)
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```
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Then download this library and move the files to `user/`:
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```bash
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git clone https://github.com/Caerbannog/esphttpclient.git
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mv esphttpclient/*.* user/
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```
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## Usage
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Include `httpclient.h` from `user_main.c` then call one of these functions:
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```c
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void http_get(const char * url, const char * headers, http_callback user_callback);
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void http_post(const char * url, const char * post_data, const char * headers, http_callback user_callback);
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void http_callback_example(char * response_body, int http_status, char * response_headers, int body_size)
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{
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os_printf("http_status=%d\n", http_status);
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if (http_status != HTTP_STATUS_GENERIC_ERROR) {
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os_printf("strlen(headers)=%d\n", strlen(response_headers));
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os_printf("body_size=%d\n", body_size);
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os_printf("body=%s<EOF>\n", response_body);
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}
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}
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```
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## Example
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The following code performs a single request, then calls `http_callback_example` to display your public IP address.
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```c
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http_get("http://wtfismyip.com/text", "", http_callback_example);
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```
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The output looks like this:
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```
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http_status=200
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strlen(full_response)=244
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body_size=15
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response_body=208.97.177.124
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<EOF>
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```
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