// SPDX-License-Identifier: LGPL-3.0-or-later // Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov // // Shows how to catch all requests and send a 404 Not Found response // #include #ifdef ESP32 #include #include #elif defined(ESP8266) #include #include #elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350) #include #include #endif #include static AsyncWebServer server(80); static const char *htmlContent PROGMEM = R"( Sample HTML

Hello, World!

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)"; static const size_t htmlContentLength = strlen_P(htmlContent); void setup() { Serial.begin(115200); #ifndef CONFIG_IDF_TARGET_ESP32H2 WiFi.mode(WIFI_AP); WiFi.softAP("esp-captive"); #endif // curl -v http://192.168.4.1/ server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) { // need to cast to uint8_t* // if you do not, the const char* will be copied in a temporary String buffer request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength); }); // catch any request, and send a 404 Not Found response // except for /game_log which is handled by onRequestBody // // curl -v http://192.168.4.1/foo // server.onNotFound([](AsyncWebServerRequest *request) { if (request->url() == "/game_log") { return; // response object already created by onRequestBody } request->send(404, "text/plain", "Not found"); }); // See: https://github.com/ESP32Async/ESPAsyncWebServer/issues/6 // catch any POST request and send a 200 OK response // // curl -v -X POST http://192.168.4.1/game_log -H "Content-Type: application/json" -d '{"game": "test"}' // server.onRequestBody([](AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) { if (request->url() == "/game_log") { request->send(200, "application/json", "{\"status\":\"OK\"}"); } // note that there is no else here: the goal is only to prepare a response based on some body content // onNotFound will always be called after this, and will not override the response object if `/game_log` is requested }); server.begin(); } // not needed void loop() { delay(100); }