WebSocket - void send_P() is deprecated

[mikrocoder]

Platform

ESP32

IDE / Tooling

Arduino (IDE/CLI)

What happened?

When I compile the WebSocket example I get a deprecated warning. I think this should be changed at some point. I am using the Espressif Core 3.1.1 with the Arduino IDE 2.3.4 with C++20 (23) and Windows 11

Stack Trace

"C:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\tools\\esp-x32\\2405/bin/xtensa-esp32s3-elf-g++" -MMD -c "@C:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\tools\\esp32-arduino-libs\\idf-release_v5.3-cfea4f7c-v1\\esp32s3/flags/cpp_flags" -std=gnu++23 -Wno-volatile -Os -Werror=return-type -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_XIAO_ESP32S3 -DARDUINO_ARCH_ESP32 "-DARDUINO_BOARD=\"XIAO_ESP32S3\"" "-DARDUINO_VARIANT=\"XIAO_ESP32S3\"" -DARDUINO_PARTITION_default_8MB "-DARDUINO_HOST_OS=\"windows\"" "-DARDUINO_FQBN=\"esp32:esp32:XIAO_ESP32S3:UploadSpeed=921600,USBMode=hwcdc,CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,UploadMode=default,CPUFreq=240,FlashMode=qio,FlashSize=8M,PartitionScheme=default_8MB,DebugLevel=none,PSRAM=disabled,LoopCore=1,EventsCore=1,EraseFlash=none,JTAGAdapter=default\"" -DESP32=ESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_RUNNING_CORE=1 -DARDUINO_EVENT_RUNNING_CORE=1 -DARDUINO_USB_MODE=1 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 "@C:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\tools\\esp32-arduino-libs\\idf-release_v5.3-cfea4f7c-v1\\esp32s3/flags/defines" "-IC:\\Users\\Worker\\AppData\\Local\\Temp\\.arduinoIDE-unsaved202528-9912-xh4lir.zrgbi\\WebSocket" -iprefix "C:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\tools\\esp32-arduino-libs\\idf-release_v5.3-cfea4f7c-v1\\esp32s3/include/" "@C:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\tools\\esp32-arduino-libs\\idf-release_v5.3-cfea4f7c-v1\\esp32s3/flags/includes" "-IC:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\tools\\esp32-arduino-libs\\idf-release_v5.3-cfea4f7c-v1\\esp32s3/qio_qspi/include" "-IC:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\3.1.1\\cores\\esp32" "-IC:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\3.1.1\\variants\\XIAO_ESP32S3" "-Ig:\\Arduino IDE v2.3.4\\portable\\sketchbook\\libraries\\credentials" "-IC:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\3.1.1\\libraries\\WiFi\\src" "-IC:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\3.1.1\\libraries\\Network\\src" "-Ig:\\Arduino IDE v2.3.4\\portable\\sketchbook\\libraries\\Async_TCP\\src" "-Ig:\\Arduino IDE v2.3.4\\portable\\sketchbook\\libraries\\ESP_Async_WebServer\\src" "-IC:\\Users\\Worker\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\3.1.1\\libraries\\FS\\src" "@C:\\Users\\Worker\\AppData\\Local\\arduino\\sketches\\D65EAF21176EFB3E025EFC79F0AA7AAC/build_opt.h" "@C:\\Users\\Worker\\AppData\\Local\\arduino\\sketches\\D65EAF21176EFB3E025EFC79F0AA7AAC/file_opts" "C:\\Users\\Worker\\AppData\\Local\\arduino\\sketches\\D65EAF21176EFB3E025EFC79F0AA7AAC\\sketch\\WebSocket.ino.cpp" -o "C:\\Users\\Worker\\AppData\\Local\\arduino\\sketches\\D65EAF21176EFB3E025EFC79F0AA7AAC\\sketch\\WebSocket.ino.cpp.o"
C:\Users\Worker\AppData\Local\Temp\.arduinoIDE-unsaved202528-9912-xh4lir.zrgbi\WebSocket\WebSocket.ino: In lambda function:
C:\Users\Worker\AppData\Local\Temp\.arduinoIDE-unsaved202528-9912-xh4lir.zrgbi\WebSocket\WebSocket.ino:140:20: warning: 'void AsyncWebServerRequest::send_P(int, const String&, const char*, AwsTemplateProcessor)' is deprecated: Replaced by send(int code, const String& contentType, const char* content = asyncsrv::empty, AwsTemplateProcessor callback = nullptr) [-Wdeprecated-declarations]
In file included from C:\Users\Worker\AppData\Local\Temp\.arduinoIDE-unsaved202528-9912-xh4lir.zrgbi\WebSocket\WebSocket.ino:5:
g:\Arduino IDE v2.3.4\portable\sketchbook\libraries\ESP_Async_WebServer\src/ESPAsyncWebServer.h:423:8: note: declared here
  423 |   void send_P(int code, const String &contentType, PGM_P content, AwsTemplateProcessor callback = nullptr) {
      |        ^~~~~~
Bibliotheken werden kompiliert ...

Minimal Reproductible Example (MRE)

WebSocket Example from ESP32 Async WebServer Library

I confirm that:

• I have read the documentation.
• I have searched for similar discussions.
• I have searched for similar issues.
• I have looked at the examples.
• I have upgraded to the lasted version of ESPAsyncWebServer (and AsyncTCP for ESP32).