Patch by Thomas Franco, rediffed for 4.34.

diff -ru stunnel-4.34/src/options.c stunnel-4.34-listen-queue/src/options.c
--- stunnel-4.34/src/options.c	2010-09-14 17:09:36.000000000 +0200
+++ stunnel-4.34-listen-queue/src/options.c	2010-12-06 22:14:15.610223090 +0100
@@ -1473,6 +1473,24 @@
         break;
     }
 
+    /* listenqueue */
+    switch(cmd) {
+    case CMD_INIT:
+        section->listenqueue=SOMAXCONN;
+        break;
+    case CMD_EXEC:
+        if(strcasecmp(opt, "listenqueue"))
+            break;
+        section->listenqueue=atoi(arg);
+        return (section->listenqueue?NULL:"Bad verify level");
+    case CMD_DEFAULT:
+        s_log(LOG_NOTICE, "%-15s = %d", "listenqueue", SOMAXCONN);
+        break;
+    case CMD_HELP:
+        s_log(LOG_NOTICE, "%-15s = defines the maximum length the queue of pending connections may grow to", "listenqueue");
+        break;
+    }
+
     if(cmd==CMD_EXEC)
         return option_not_found;
     return NULL; /* OK */
diff -ru stunnel-4.34/src/prototypes.h stunnel-4.34-listen-queue/src/prototypes.h
--- stunnel-4.34/src/prototypes.h	2010-09-14 17:09:50.000000000 +0200
+++ stunnel-4.34-listen-queue/src/prototypes.h	2010-12-06 22:06:39.217327586 +0100
@@ -158,6 +158,7 @@
     int timeout_close; /* maximum close_notify time */
     int timeout_connect; /* maximum connect() time */
     int timeout_idle; /* maximum idle connection time */
+    int listenqueue; /* Listen baklog */
     enum {FAILOVER_RR, FAILOVER_PRIO} failover; /* failover strategy */
 
         /* protocol name for protocol.c */
Seulement dans stunnel-4.34-listen-queue/src: prototypes.h~
diff -ru stunnel-4.34/src/stunnel.c stunnel-4.34-listen-queue/src/stunnel.c
--- stunnel-4.34/src/stunnel.c	2010-08-20 11:01:35.000000000 +0200
+++ stunnel-4.34-listen-queue/src/stunnel.c	2010-12-06 22:05:54.732885327 +0100
@@ -204,7 +204,7 @@
             }
             s_log(LOG_DEBUG, "Service %s bound to %s",
                 opt->servname, opt->local_address);
-            if(listen(opt->fd, 5)) {
+            if(listen(opt->fd, opt->listenqueue)) {
                 sockerror("listen");
                 return 0;
             }
Seulement dans stunnel-4.34-listen-queue/src: stunnel.c~