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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Query and send headers
//
#include <Arduino.h>
#ifdef ESP32
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
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) {
//List all collected headers
int headers = request->headers();
int i;
for (i = 0; i < headers; i++) {
const AsyncWebHeader *h = request->getHeader(i);
Serial.printf("HEADER[%s]: %s\n", h->name().c_str(), h->value().c_str());
}
AsyncWebServerResponse *response = request->beginResponse(200, "text/plain", "Hello World!");
//Add header to the response
response->addHeader("Server", "ESP Async Web Server");
//Add multiple headers with the same name
response->addHeader("Set-Cookie", "sessionId=38afes7a8", false);
response->addHeader("Set-Cookie", "id=a3fWa; Max-Age=2592000", false);
response->addHeader("Set-Cookie", "qwerty=219ffwef9w0f; Domain=example.com", false);
//Remove specific header
response->removeHeader("Set-Cookie", "sessionId=38afes7a8");
//Remove all headers with the same name
response->removeHeader("Set-Cookie");
request->send(response);
});
server.begin();
}
void loop() {
//Sleep in the loop task to not keep the CPU busy
delay(1000);
}
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