examples/protocols/esp_http_client: Add example for asynchronous HTTP request
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5309ca04d1
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0aec63c18e
2 changed files with 38 additions and 9 deletions
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@ -33,8 +33,6 @@ static const char *TAG = "esp-tls";
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#define ESP_LOGE(TAG, ...) printf(__VA_ARGS__);
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#endif
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#define DEFAULT_TIMEOUT_MS 0
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static struct addrinfo *resolve_host_name(const char *host, size_t hostlen)
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{
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struct addrinfo hints;
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@ -301,15 +299,12 @@ static int esp_tls_low_level_conn(const char *hostname, int hostlen, int port, c
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tls->wset = tls->rset;
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}
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tls->conn_state = ESP_TLS_CONNECTING;
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case ESP_TLS_CONNECTING: /* fall-through */
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/* falls through */
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case ESP_TLS_CONNECTING:
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if (cfg->non_block) {
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ESP_LOGD(TAG, "connecting...");
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struct timeval tv;
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if (cfg->timeout_ms) {
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ms_to_timeval(cfg->timeout_ms, &tv);
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} else {
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ms_to_timeval(DEFAULT_TIMEOUT_MS, &tv);
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}
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/* In case of non-blocking I/O, we use the select() API to check whether
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connection has been estbalished or not*/
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@ -339,7 +334,8 @@ static int esp_tls_low_level_conn(const char *hostname, int hostlen, int port, c
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tls->read = tls_read;
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tls->write = tls_write;
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tls->conn_state = ESP_TLS_HANDSHAKE;
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case ESP_TLS_HANDSHAKE: /* fall-through */
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/* falls through */
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case ESP_TLS_HANDSHAKE:
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ESP_LOGD(TAG, "handshake in progress...");
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ret = mbedtls_ssl_handshake(&tls->ssl);
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if (ret == 0) {
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@ -342,6 +342,38 @@ static void http_perform_as_stream_reader()
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free(buffer);
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}
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static void https_async()
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{
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esp_http_client_config_t config = {
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.url = "https://postman-echo.com/post",
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.event_handler = _http_event_handler,
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.is_async = true,
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.timeout_ms = 5000,
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};
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esp_http_client_handle_t client = esp_http_client_init(&config);
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esp_err_t err;
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const char *post_data = "Using a Palantír requires a person with great strength of will and wisdom. The Palantíri were meant to "
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"be used by the Dúnedain to communicate throughout the Realms in Exile. During the War of the Ring, "
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"the Palantíri were used by many individuals. Sauron used the Ithil-stone to take advantage of the users "
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"of the other two stones, the Orthanc-stone and Anor-stone, but was also susceptible to deception himself.";
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esp_http_client_set_method(client, HTTP_METHOD_POST);
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esp_http_client_set_post_field(client, post_data, strlen(post_data));
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while (1) {
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err = esp_http_client_perform(client);
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if (err != ESP_ERR_HTTP_EAGAIN) {
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break;
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}
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}
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if (err == ESP_OK) {
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ESP_LOGI(TAG, "HTTPS Status = %d, content_length = %d",
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esp_http_client_get_status_code(client),
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esp_http_client_get_content_length(client));
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} else {
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ESP_LOGE(TAG, "Error perform http request %s", esp_err_to_name(err));
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}
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esp_http_client_cleanup(client);
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}
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static void http_test_task(void *pvParameters)
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{
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app_wifi_wait_connected();
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@ -356,6 +388,7 @@ static void http_test_task(void *pvParameters)
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http_redirect_to_https();
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http_download_chunk();
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http_perform_as_stream_reader();
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https_async();
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ESP_LOGI(TAG, "Finish http example");
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vTaskDelete(NULL);
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}
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