When I get an IP address from the access point it prompts me with a login page, and I must submit this form to continue.
There is a way with the ESP8266 to submit username and password with a POST message?
Here is the code of the form
<form class='form' method='post' action='https://gw.edisu-piemonte.it:8001/' >
<input name='redirurl' type='hidden' value='http://www.google.com/' />
<p> <input name='auth_user' type='text' id='auth_user' autocapitalize="off" />
<label for='auth_user'>Username</label> </p>
<p> <input name='auth_pass' type='password' id='auth_pass' />
<label for='auth_pass'>Password</label> </p>
<p class='submit'><input type='submit' name="accept" value='Login' /></p>
</form>