web applet fails to connect to local server running on the switch about libnx

[yellows8]

Use the whitelist string from the example. https://github.com/switchbrew/switch-examples/blob/master/applet/libapplets/web/source/main.c

Did you try to log anything from your server?

[Slluxx]

That whitelist doesn't have any effect either. Yeah, i am logging connections but i just don't get any. connecting from pc does show logs. Its as if i can not establish a connection to it whatsoever.

[yellows8]

Tried using port 80?

[Slluxx]

no, 1234
but it should not matter, since i can specify a port in the url for the webapplet and thats working just fine. ill try anyway.

Edit: I cant bind port 80. (errno 13)
Edit2: I could provide a repository if that makes things easier.

[yellows8]

Edit2: I could provide a repository if that makes things easier. sure

[Slluxx]

Edit2: I could provide a repository if that makes things easier. sure

https://github.com/Slluxx/serverxbrowser

For testing purposes, i changed the thread to open the webbrowser instead of running the webserver, due to printf's inside a thread are leading to crashes. the current solution is also not great because it should use locked_printf but right now it works.

[yellows8]

FWIW you can use standard threads - you don't have to directly use libnx threads. Large buffers like char buffer[8192]; should really be moved to non-stack as well.

[Slluxx]

Ah, didnt know. i was just using the threads that were in all the switchbrew examples. is there any disadvantage by using those? And what does moved to non-stack as well. mean "in code"? I understand C/++ mostly by looking at code and people saying things like that usually just pops up a big questionmark above my head. Also, why is it benefitial to move it there?

[yellows8]

Your process is likely not running while the applet is active. You need to use webSession (see web.h), or if pre-7.0.0 system-version support is really required, use appletSetFocusHandlingMode.

Normally you should use standard threads, unless you really want cooperative thread scheduling. static char buffer[...] would be good enough, would move it from stack to .data (large buffers doesn't really belong on stack). Using fsInitialize/fsExit isn't needed, that's used automatically by libnx for apps.

[Slluxx]

Your process is likely not running while the applet is active.

But why can i still access the webserver on my pc while the applet is active? Shouldn't that mean that the process is in fact running? To serve content, it has to run in a loop for polling, evaluating and responding - which it obviously does.
I will write file logs to confirm that. Pretty sure the issue lies somewhere else.

Using fsInitialize/fsExit isn't needed, that's used automatically by libnx for apps.

understood, will be removed.

static char buffer[...] would be good enough

thanks for the clarification!

Edit: Logs show that the current way of threading and opening the applet does not stop the main loop from executing.

[yellows8]

What exactly is the use-case for this?

The applet opens but cant connect to the server on 127.0.0.1, localhost or {Switch IP addr}. ... with the error code "2800-1007". Likewise here without a server running.

localhost and 127.0.0.1 are explicitly blacklisted by the web-applet itself AFAICT.

[Slluxx]

What exactly is the use-case for this?

i am experimenting with different kind of servers and webpages to create html/css/js homebrew guis, instead of using sdl or something else.

localhost and 127.0.0.1 are explicitly blacklisted by the web-applet itself AFAICT.

due to this info, i tried accessing the server via atmospheres dns mitm service.
using my switches lan adress and a random domain name worked perfectly fine.
Its not really a solution i want to use but it works to experiment with things.

Is there a way to remove those adresses from the blacklist somehow?

[yellows8]

You could use webOffline for that, with webSession if needed.

Is there a way to remove those adresses from the blacklist somehow? That requires patching the web-applet codebin.

[Slluxx]

i am trying to use weboffline as suggested but my switch just crashes with a 0x4a2 which doesnt help a lot.

            WebCommonConfig conf;
            WebCommonReply out;
            webOfflineCreate(&conf, WebDocumentKind_OfflineHtmlPage, 0 , "/");
            webConfigSetWhitelist(&conf, "^http*");
            webConfigShow(&conf, &out);

It crashes upon executing webConfigShow. I thought it may be that i have to use /index.html instead of a path?
i am also confused about where to put the index file. From the docs i am understanding romfs:/html-document/index.html but not quite sure if thats right.

[yellows8]

Path is relative to SD /atmosphere/hbl_html/html-document/ - you should probably include your app-name or similar in the path.

[Slluxx]

and no way of having it in romfs of the homebrew?

[yellows8]

AMS only loads user-specified-content for that romfs from that /atmosphere/hbl_html/ dir.