Steps to reproduce the issue

• disable php-curl and verify that transport sockets is used
• administrator -> system -> update joomla -> check for updates

in libraries/src/Http/Transport/SocketTransport.php -> request(...)
the loop at #123

        while (!feof($connection)) {
            $content .= fgets($connection, 4096);
        }

does not finish at the end of the xml-document, but loops forever, continuing over any number of timeouts

if, however, the socket closes, you get an xml parse error, because before and after the xml, there are some strange characters.

Expected result

1. check update should neither loop nor fail parsing the xml, but return a screen with the necessary updates, or the confirmation there are none
2. give an installation warning if php-curl is missing

Actual result

does not finish at the end of the xml-document, but loops forever, continuing over any number of timeouts
if, however, the socket closes, you get an xml parse error, because before and after the xml, there are some strange characters.

System information (as much as possible)

• Joomla 4.3.2
• php php-defaults (92ubuntu1) jammy
• apache2 (2.4.52-1ubuntu4.1)
• linux System: Kernel: 5.15.0-48-generic x86_64 bits: 64 compiler: gcc v: 11.2.0 Desktop: Cinnamon 5.4.12
  tk: GTK 3.24.33 wm: Mutter dm: LightDM Distro: Linux Mint 21 Vanessa base: Ubuntu 22.04 jammy
• the problem was origninally detected on linux mint 20.3 and php 7, it survived a complete new installation of the operating system and all other software

Additional comments

it took me a very long time to debug the problem, as there was not response from the system and I couldn't find any hint in the logs or the web....