MATLAB R2019b has problems with HTTP POST requests

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JEROME GARCIA el 28 de Sept. de 2019

This problem is encountered when communicating with a web server on an Arduino card

Here are some initializing parameters:

url='http://192.168.1.23';

data=struct('recalage','activé','x',0.55);

a=jsonencode(data);

then , with R2019a : webwrite(url,urlencode(a)) returns a correct answer

'<!DOCTYPE HTML>

<head>

</head>

<html>

Arguments GET ou POST: {"recalage":"activé","x":0.55}

Arguments décodés: recalage=activé ,x=0.5500

</html>

while, with R2019b, the answer with the same board is:

<!DOCTYPE HTML>

<head>

</head>

<html>

Arguments GET ou POST: ��

</html>

the reason is that the function client.read() on arduino returns no data when reading the POST data when the request is coming grom R2019b

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