NET installation: PerformRequest:98: Failed to retrieve HTTP Header: Couldn't connect to server

[Crylia]

Describe the bug (mandatory)
Trying to install a game via the network, I see what I'm trying to install on the switch, select it, start it, and wait a few minutes for this error to popup: PerformRequest:98: Failed to retrieve HTTP Header: Couldn't connect to server

Information about environment (mandatory):

• OS: Pop!_OS 22.04 LTS x86_64
• Java version
  openjdk version "21.0.4" 2024-07-16
  OpenJDK Runtime Environment (build 21.0.4+7-Ubuntu-1ubuntu222.04)
  OpenJDK 64-Bit Server VM (build 21.0.4+7-Ubuntu-1ubuntu222.04, mixed mode, sharing)

Steps to reproduce
Steps to reproduce the behavior:
Like explained above

This is how I started it and its logs

java -jar Downloads/ns-usbloader-7.1.jar
Sept. 18, 2024 11:43:26 PM com.sun.javafx.application.PlatformImpl startup
WARNUNG: Unsupported JavaFX configuration: classes were loaded from 'unnamed module @5b8bc155'

[icemouton]

I can confirm I have the same issue

on Windows, if needed I can provide jdk/java versions but I'm not on my pc right now

[developersu]

Ok, will check this. Thanks!

So there is definitely something wrong with firewall settings. So solution of this could be like more clear and exhaustive error message.

Also related issues:
Huntereb/Awoo-Installer#141
Huntereb/Awoo-Installer#47

[davidebeatrici]

I can confirm this is caused by the firewall blocking incoming connections.

The problem is that ns-usbloader uses an ephemeral port every time the server is started, meaning that the number is not stable. It can be found like this:

$ netstat -tunlp
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp6       0      0 :::6300                 :::*                    LISTEN      45256/java

Please note that tcp6 in this case means both IPv6 and IPv4.