Lightweight HTTP client for ESP32
Example
int download_callback(request_t *req, char *data, int len)
{
list_t *found = req->response->header;
while(found->next != NULL) {
found = found->next;
ESP_LOGI(TAG,"Response header %s:%s", (char*)found->key, (char*)found->value);
}
//or
found = list_get_key(req->response->header, "Content-Length");
if(found) {
ESP_LOGI(TAG,"Get header %s:%s", (char*)found->key, (char*)found->value);
}
ESP_LOGI(TAG,"%s", data);
return 0;
}
static void request_task(void *pvParameters)
{
request_t *req;
int status;
xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, false, true, portMAX_DELAY);
ESP_LOGI(TAG, "Connected to AP, freemem=%d",esp_get_free_heap_size());
// vTaskDelay(1000/portTICK_RATE_MS);
req = req_new("http://httpbin.org/post");
//or
//request *req = req_new("https://google.com"); //for SSL
req_setopt(req, REQ_SET_METHOD, "POST");
req_setopt(req, REQ_SET_POSTFIELDS, "test=data&test2=data2");
req_setopt(req, REQ_FUNC_DOWNLOAD_CB, download_callback);
status = req_perform(req);
req_clean(req);
vTaskDelete(NULL);
}
Usage
API
Function
req_new
req_setopt
req_clean
Options for req_setopt
- REQ_SET_METHOD -
req_setopt(req, REQ_SET_METHOD, "GET");//or POST/PUT/DELETE
- REQ_SET_HEADER -
req_setopt(req, REQ_SET_HEADER, "HeaderKey: HeaderValue");
- REQ_SET_HOST -
req_setopt(req, REQ_SET_HOST, "google.com"); //or 192.168.0.1
- REQ_SET_PORT -
req_setopt(req, REQ_SET_PORT, "80");//must be string
- REQ_SET_PATH -
req_setopt(req, REQ_SET_PATH, "/path");
- REQ_SET_SECURITY
- REQ_SET_URI -
req_setopt(req, REQ_SET_URI, "http://uri.com"); //will replace host, port, path, security and Auth if present
- REQ_SET_DATAFIELDS
- REQ_SET_UPLOAD_LEN - Not effect for now
- REQ_FUNC_DOWNLOAD_CB -
req_setopt(req, REQ_FUNC_DOWNLOAD_CB, download_callback);
- REQ_FUNC_UPLOAD_CB
- REQ_REDIRECT_FOLLOW -
req_setopt(req, REQ_REDIRECT_FOLLOW, "true"); //or "false"
URI format
Todo
Known Issues
Memory leak
- Uri parse need more work
Authors