ESP32 Forum

Posted: **Thu Aug 30, 2018 12:36 am**

Hello,

I'm writing a server application using the AsyncTCP.h and ESPAsyncWebServer.h librarires.

I'm able to receive POST requests and execute a function.

Code: Select all

	server.on("/LED", HTTP_POST, [](AsyncWebServerRequest *request){
		request->send(200, "text/plain", "Post route");
		handleLED();		
	});

How do I handle receiving data from the client?
For example:

Code: Select all

192.168.1.6/LED?key=val&key2=val2

Posted: **Fri Aug 31, 2018 3:44 pm**

Is the example code not working as expected?
Something like this should do:

Code: Select all

const char* PARAM_KEY = "key";
String keyVal;
if (request->hasParam(PARAM_KEY)) {
	keyVal= request->getParam(PARAM_KEY)->value();
} else {
	//handle an incomplete request
	keyVal = "some default value";
}

Also this

Code: Select all

192.168.1.6/LED?key=val&key2=val2

looks to me like you're using GET, not POST. A POST request would have the url "192.168.1.6/LED" with the postdata, "key=val&key2=val2", in the body of the request.

You may have to use HTTP_GET (or HTTP_ANY) instead of HTTP_POST so it's looking in the right place for your data.

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