The app hangs when interrupted on reading from client_socket

[rexim]

Somewhere here

wassm/src/main.asm

Line 260 in 85312e4

;;; request_buffer_size = read(client_socket, request_buffer, REQUEST_BUFFER_CAPACITY)

Reproduction

1. Request a resource
2. ^C the app
3. Repeat 1 and 2 several time to catch the moment. When app doesn't exit on ^C the bug is reproduced
4. Attach to the process with strace and ensure that the process is stuck on the read call.

Observed

App doesn't exist on ^C

Expected

App exists on ^C clearly

Notes

If during the blocked state on the read call you request the page again, the app exists.

[rexim]

Comment from the stream

ProvodGL: Also, what read() will do on SIGINT (or SIGanything) is a bit complicated and depends on SA_RESTART flag. Generally, if the flag is not set, it will fail with EINTR. Otherwise it will be automatically restarted. But I believe there are some edge cases when you can't actually rely on that. Don't remember the details, though.