From c29d691d32eea87b748587cc1f9c418a1bd1a00e Mon Sep 17 00:00:00 2001
From: Alvar Penning
Date: Tue, 17 Feb 2026 22:55:29 +0100
Subject: httpd: Log xs_socket_accept failure reason

So far, it was expected that xs_socket_accept should work and while its
failure results in a termination, it was not properly logged. With this
change, an error message including the strerror message is being logged.

After experiencing some unexpected snac httpd shutdowns, I added a bit
of additional logging, including when xs_socket_accept fails. This
proved useful, as it unveiled a deeper error on my machine:

> xs_socket_accept failed: Too many open files

Since entering this code path results in termination, I thought
upstreaming this logging might be useful for others.
---
 httpd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/httpd.c b/httpd.c
index f46cfca..219af19 100644
--- a/httpd.c
+++ b/httpd.c
@@ -1116,9 +1116,10 @@ void httpd(void)
                 FILE *f = fdopen(cs, "r+");
                 xs *job = xs_data_new(&f, sizeof(FILE *));
                 job_post(job, 1);
-            }
-            else
+            } else {
+                srv_log(xs_fmt("error: xs_socket_accept failed: %s", strerror(errno)));
                 break;
+            }
         }
     }
 
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