daemon: use per-listener SIG{__WARN__} callbacks

This allows "-l $ADDRESS?err=/path/to/err.log to isolate normal
warn() (and carp()) messages for a particular listen address to
track down errors more easily.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/PublicInbox/HTTPD.pm b/lib/PublicInbox/HTTPD.pm
index e531ee70..bae7281b 100644
--- a/lib/PublicInbox/HTTPD.pm
+++ b/lib/PublicInbox/HTTPD.pm
@@ -47,6 +47,7 @@ sub env_for ($$$) {
                 # detect when to use async paths for slow blobs
                 'pi-httpd.async' => \&pi_httpd_async,
                 'pi-httpd.app' => $self->{app},
+                'pi-httpd.warn_cb' => $self->{warn_cb},
         }
 }