Keep FastCGI available during restarts

scripts/deb/postinst

@@ -4,7 +4,8 @@ set -e
 if command -v systemctl >/dev/null 2>&1; then
 	systemctl daemon-reload >/dev/null 2>&1 || true
 	if [ "$1" = "configure" ]; then
-		systemctl enable uce.service >/dev/null 2>&1 || true
+		systemctl enable uce.socket uce.service >/dev/null 2>&1 || true
+		systemctl start uce.socket >/dev/null 2>&1 || true
 		systemctl restart uce.service >/dev/null 2>&1 || true
 	fi
 fi

scripts/deb/prerm

@@ -3,7 +3,7 @@ set -e
 
 if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then
 	if command -v systemctl >/dev/null 2>&1; then
-		systemctl disable --now uce.service >/dev/null 2>&1 || true
+		systemctl disable --now uce.service uce.socket >/dev/null 2>&1 || true
 	fi
 fi
 

scripts/deb/uce.service

@@ -1,7 +1,8 @@
 [Unit]
 Description=UCE FastCGI Runtime
-After=network-online.target mariadb.service memcached.service
+After=network-online.target mariadb.service memcached.service uce.socket
 Wants=network-online.target
+Requires=uce.socket
 
 [Service]
 Type=simple
@@ -10,12 +11,10 @@ RuntimeDirectory=uce
 StateDirectory=uce
 CacheDirectory=uce
 ExecStartPre=/usr/bin/mkdir -p /var/cache/uce/work /var/lib/uce/uploads /var/lib/uce/sessions
-ExecStartPre=/usr/bin/rm -f /run/uce/fastcgi.sock
 ExecStart=/usr/lib/uce/bin/uce_fastcgi.linux.bin
-ExecStopPost=/usr/bin/rm -f /run/uce/fastcgi.sock
 Restart=always
 RestartSec=2
-TimeoutStopSec=15
+TimeoutStopSec=30
 KillMode=mixed
 StandardOutput=journal
 StandardError=journal

scripts/deb/uce.socket

@@ -0,0 +1,15 @@
+[Unit]
+Description=UCE FastCGI socket
+
+[Socket]
+ListenStream=/run/uce/fastcgi.sock
+FileDescriptorName=fastcgi
+SocketUser=www-data
+SocketGroup=www-data
+SocketMode=0660
+DirectoryMode=0755
+Backlog=100
+Service=uce.service
+
+[Install]
+WantedBy=sockets.target