---
 src/options.c    |   18 ++++++++++++++++++
 src/prototypes.h |    1 +
 src/stunnel.c    |    2 +-
 3 files changed, 20 insertions(+), 1 deletion(-)

--- src/options.c
+++ src/options.c	2017-04-06 08:40:50.927511225 +0000
@@ -1881,6 +1881,24 @@ NOEXPORT char *parse_service_option(CMD
         break;
     }
 
+    /* listenqueue option */
+    switch(cmd) {
+    case CMD_BEGIN:
+        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 (max SOMAXCONN)", "listenqueue");
+        break;
+    }
+
 #ifndef OPENSSL_NO_OCSP
 
     /* OCSP */
--- src/prototypes.h
+++ src/prototypes.h	2017-04-06 08:40:50.927511225 +0000
@@ -252,6 +252,7 @@ typedef struct service_options_struct {
     int timeout_close;                          /* maximum close_notify time */
     int timeout_connect;                           /* maximum connect() time */
     int timeout_idle;                        /* maximum idle connection time */
+    int listenqueue;                                       /* Listen backlog */
     enum {FAILOVER_RR, FAILOVER_PRIO} failover;         /* failover strategy */
     char *username;
 
--- src/stunnel.c
+++ src/stunnel.c	2017-04-06 08:40:50.927511225 +0000
@@ -476,7 +476,7 @@ int bind_ports(void) {
                     str_free(local_address);
                     return 1;
                 }
-                if(listen(opt->fd, SOMAXCONN)) {
+                if(listen(opt->fd, opt->listenqueue)) {
                     sockerror("listen");
                     closesocket(opt->fd);
                     opt->fd=INVALID_SOCKET;