tuanpmt / Esp Request
Licence: apache-2.0
This project is no longer supported, please use
Stars: ✭ 65
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Lightweight HTTP client for ESP32
Example
This project is no longer supported, please use
https://github.com/espressif/esp-idf/tree/master/components/esp_http_client
int download_callback(request_t *req, char *data, int len)
{
req_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 = req_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);
}
Websocket
int websocket_cb(request_t *req, int status, void *buffer, int len)
{
switch(status) {
case WS_CONNECTED:
ESP_LOGI(TAG, "websocket connected");
req_write(req, "hello world", 11);
break;
case WS_DATA:
((char*)buffer)[len] = 0;
ESP_LOGI(TAG, "websocket data = %s", (char*)buffer);
req_close(req);
break;
case WS_DISCONNECTED:
ESP_LOGI(TAG, "websocket disconnected");
req_clean(req);
req = NULL;
break;
}
return 0;
}
void app()
{
request_t *req = req_new("ws://echo.websocket.org"); // or wss://echo.websocket.org
req_setopt(req, REQ_FUNC_WEBSOCKET, websocket_cb);
req_perform(req);
}
Usage
- Create ESP-IDF application https://github.com/espressif/esp-idf-template
- Clone
git submodule add https://github.com/tuanpmt/esp-request components/esp-request
- Example
esp-request
application: https://github.com/tuanpmt/esp-request-app - OTA application using
esp-request
: https://github.com/tuanpmt/esp32-fota
API
Function
req_new
req_setopt
req_clean
req_setopt
Options for - 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_FUNC_WEBSOCKET
- REQ_REDIRECT_FOLLOW -
req_setopt(req, REQ_REDIRECT_FOLLOW, "true"); //or "false"
URI format
Todo
- [x] Support URI parser
- [x] Follow redirect
- [x] Support SSL
- [x] Support Set POST Fields (simple)
- [x] Support Websocket & Websocket Secure
- [ ] Support Basic Auth
- [ ] Support Upload multipart
- [ ] Support Cookie
Known Issues
- Uri parse need more work
Authors
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