Fix delays printing to lpd when reserved ports are exhausted

cups_rresvport() doesn't reserve ports less than 512; however,
lpd_queue() continues decrementing the port number to 0.  This leads
to delays of ~511 seconds once all ports between 512-1023 are
exhausted.  Even when ports become available, lpd_queue() still tries
calling cups_rresvport() with port numbers less than 512, waiting one
second between each call.

diff --git a/backend/lpd.c b/backend/lpd.c
index a7a44ab20fa28465945511fc20d917ff922c4432..425b8512ac0550eb698a92b5ae3fd517aedfb37b 100644 (file)
--- a/backend/lpd.c
+++ b/backend/lpd.c
@@ -63,7 +63,7 @@ static int    abort_job = 0;          /* Non-zero if we get SIGTERM */
 
 #define RESERVE_NONE           0       /* Don't reserve a privileged port */
 #define RESERVE_RFC1179                1       /* Reserve port 721-731 */
-#define RESERVE_ANY            2       /* Reserve port 1-1023 */
+#define RESERVE_ANY            2       /* Reserve port 512-1023 */
 
 
 /*
@@ -775,7 +775,7 @@ lpd_queue(const char      *hostname,        /* I - Host to connect to */
 
       if (lport < 721 && reserve == RESERVE_RFC1179)
        lport = 731;
-      else if (lport < 1)
+      else if (lport < 512)
        lport = 1023;
 
 #ifdef HAVE_GETEUID