CaptivePortal | A No-Nonsense Captive Portal | Portal library

The F() macro is useful to store global vars in program memory (flash storage) instead of dynamic work memory so there is more free memory left.

However, I came across this messy example included at the ESP8266 library. It works fine however I have some doubts about the usage of the F() macro inside the functions. Is it useful to use it inside functions?

Example code:

Example:

I do not know how you call this feature so I try to explain it. For example when you connect your phone to a public WiFi hotspot/access point, you receive a message from OS that it is required to accept terms/conditions or you need to logon to be able to use the connection. When you click onto this message it opens the/a browser and launch a landing page.

How do they do this? Is this a https feature?

Update:(1)

It is called a Captive Portal:

The captive portal technique forces an HTTP client on a network to see a special web page (usually for authentication purposes) before using the Internet normally. A captive portal turns a Web browser into an authentication device. This is done by intercepting most packets, regardless of address or port, until the user opens a browser and tries to access the web. At that time the browser is redirected to a web page which may require authentication and/or payment, or simply display an acceptable use policy and require the user to agree. Captive portals are used at many Wi-Fi hotspots, and can be used to control wired access (e.g. apartment houses, hotel rooms, business centers, "open" Ethernet jacks) as well.

Situation:

I want to do the same with an ESP (ESP32/ESP8266) because I develop a device that can be configurated via WiFi. It would be very user friendly when the user connect to the device and doesn't have to open a browser first, type in an IP-address etc. Just a message, user can click on it and a main page will be launched.

In AP mode, I have turned on DNS and redirect everything to the main page however is not the best solution (also sometimes doesn't work). To give you some idea what I am doing, here some code, a part of my library:

I have cable internet which requires me to login though a web page. It's annoying how it resets every day at 8 and 12am. I wanted to write a python script which will automate the login process. I've read many StackOverflow solutions so far, nothing has worked. I have tried Requests, Twill, RoboBrowser etc.

Upon inspecting the page source I came across a doLogin() ajax script, which is triggered by login button. Here is the full page source.

following is one of my implementations which fails

I have windows server 2012 and i want to insert new user using ldap and php the connection to ldap server is ok but I can not insert new user and I have more than one error every time I change the dn code the last error I have is Warning: ldap_add(): Add: Naming violation in C:\AppServ\www\auth\insert.php on line 36 the code of my php file is

I have a small embedded Linux device running Nginx. I can connect to it over the network and access the endpoints on a PC in Chrome or Firefox. My default page contains an HTML tag that points to "loading.jpeg", which is on the device at /tmp/nginx/loading.jpeg. I can type in the browser: http://192.168.0.4/loading.jpeg and see my image. I can also visit the endpoint that renders html and see my image rendered properly.

Now I want to be able to visit the root page: http://192.168.0.4/ in a browser and redirect that to my default page that should render the html and show the image. The problem is that if I set a page for the default "/" location, my webserver root directive pointing to /tmp/nginx no longer works. So I get my page displayed, but the loading.jpeg image is not found. I've tried redirecting the root request to my default page, but that also breaks the webserver root.

How can I render a default webpage for Nginx, while also having my webserver root honored? Thank you.

This does not work ( webserver root is broken - though expected default webpage is shown ):