Platform

ESP32

IDE / Tooling

Arduino (IDE/CLI)

What happened?

I have tried to use this syntax

server.on("/testJsonPost", HTTP_POST, [](AsyncWebServerRequest *request, JsonVariant &json) { // handle the json request... });

Why do I have to create a separate handler for it?

This is ridiculusly long.

auto *testPostHandler= new AsyncCallbackJsonWebHandler("/testJsonPost", [](AsyncWebServerRequest *request, JsonVariant &json) { // handle the json request... }); testPostHandler->setMethod(HTTP_POST); server.addHandler(testPostHandler);

Stack Trace

no instance of overloaded function "AsyncWebServer::on" matches the argument listC/C++(304)
network-routes.cpp(24, 12): argument types are: (const char *, WebRequestMethod, lambda [](AsyncWebServerRequest *request, ArduinoJson::V742PB22::JsonVariant &json)->void)
network-routes.cpp(24, 12): object type is: AsyncWebServer

Minimal Reproductible Example (MRE)

server.on("/testJsonPost", HTTP_POST, [](AsyncWebServerRequest *request, JsonVariant &json) { // handle the json request... });

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).