89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
// SPDX-License-Identifier: LGPL-3.0-or-later
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// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
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//
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// Show how to manipulate headers in the request / response
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//
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#include <Arduino.h>
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#ifdef ESP32
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#include <AsyncTCP.h>
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#include <WiFi.h>
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#elif defined(ESP8266)
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#include <ESP8266WiFi.h>
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#include <ESPAsyncTCP.h>
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#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
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#include <RPAsyncTCP.h>
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#include <WiFi.h>
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#endif
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#include <ESPAsyncWebServer.h>
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static AsyncWebServer server(80);
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// request logger
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static AsyncLoggingMiddleware requestLogger;
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// filter out specific headers from the incoming request
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static AsyncHeaderFilterMiddleware headerFilter;
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// remove all headers from the incoming request except the ones provided in the constructor
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AsyncHeaderFreeMiddleware headerFree;
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void setup() {
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Serial.begin(115200);
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#ifndef CONFIG_IDF_TARGET_ESP32H2
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WiFi.mode(WIFI_AP);
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WiFi.softAP("esp-captive");
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#endif
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requestLogger.setEnabled(true);
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requestLogger.setOutput(Serial);
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headerFilter.filter("X-Remove-Me");
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headerFree.keep("X-Keep-Me");
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headerFree.keep("host");
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server.addMiddlewares({&requestLogger, &headerFilter});
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// x-remove-me header will be removed
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//
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// curl -v -H "X-Header: Foo" -H "x-remove-me: value" http://192.168.4.1/remove
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//
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server.on("/remove", HTTP_GET, [](AsyncWebServerRequest *request) {
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// print all headers
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for (size_t i = 0; i < request->headers(); i++) {
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const AsyncWebHeader *h = request->getHeader(i);
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Serial.printf("Header[%s]: %s\n", h->name().c_str(), h->value().c_str());
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}
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request->send(200, "text/plain", "Hello, world!");
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});
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// Only headers x-keep-me and host will be kept
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//
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// curl -v -H "x-keep-me: value" -H "x-remove-me: value" http://192.168.4.1/keep
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//
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server
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.on(
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"/keep", HTTP_GET,
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[](AsyncWebServerRequest *request) {
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// print all headers
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for (size_t i = 0; i < request->headers(); i++) {
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const AsyncWebHeader *h = request->getHeader(i);
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Serial.printf("Header[%s]: %s\n", h->name().c_str(), h->value().c_str());
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}
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request->send(200, "text/plain", "Hello, world!");
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}
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)
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.addMiddleware(&headerFree);
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server.begin();
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}
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// not needed
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void loop() {
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delay(100);
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}
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