--- a/src/core/ngx_inet.c
+++ b/src/core/ngx_inet.c
@@ -529,13 +529,9 @@ ngx_int_t
 ngx_parse_addr_port(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text,
     size_t len)
 {
-    u_char               *p, *last;
-    size_t                plen;
-    ngx_int_t             rc, port;
-    struct sockaddr_in   *sin;
-#if (NGX_HAVE_INET6)
-    struct sockaddr_in6  *sin6;
-#endif
+    u_char     *p, *last;
+    size_t      plen;
+    ngx_int_t   rc, port;
 
     rc = ngx_parse_addr(pool, addr, text, len);
 
@@ -585,20 +581,7 @@ ngx_parse_addr_port(ngx_pool_t *pool, ng
         return rc;
     }
 
-    switch (addr->sockaddr->sa_family) {
-
-#if (NGX_HAVE_INET6)
-    case AF_INET6:
-        sin6 = (struct sockaddr_in6 *) addr->sockaddr;
-        sin6->sin6_port = htons((in_port_t) port);
-        break;
-#endif
-
-    default: /* AF_INET */
-        sin = (struct sockaddr_in *) addr->sockaddr;
-        sin->sin_port = htons((in_port_t) port);
-        break;
-    }
+    ngx_inet_set_port(addr->sockaddr, port);
 
     return NGX_OK;
 }
@@ -1356,3 +1339,61 @@ ngx_cmp_sockaddr(struct sockaddr *sa1, s
 
     return NGX_OK;
 }
+
+
+in_port_t
+ngx_inet_get_port(struct sockaddr *sa)
+{
+    struct sockaddr_in   *sin;
+#if (NGX_HAVE_INET6)
+    struct sockaddr_in6  *sin6;
+#endif
+
+    switch (sa->sa_family) {
+
+#if (NGX_HAVE_INET6)
+    case AF_INET6:
+        sin6 = (struct sockaddr_in6 *) sa;
+        return ntohs(sin6->sin6_port);
+#endif
+
+#if (NGX_HAVE_UNIX_DOMAIN)
+    case AF_UNIX:
+        return 0;
+#endif
+
+    default: /* AF_INET */
+        sin = (struct sockaddr_in *) sa;
+        return ntohs(sin->sin_port);
+    }
+}
+
+
+void
+ngx_inet_set_port(struct sockaddr *sa, in_port_t port)
+{
+    struct sockaddr_in   *sin;
+#if (NGX_HAVE_INET6)
+    struct sockaddr_in6  *sin6;
+#endif
+
+    switch (sa->sa_family) {
+
+#if (NGX_HAVE_INET6)
+    case AF_INET6:
+        sin6 = (struct sockaddr_in6 *) sa;
+        sin6->sin6_port = htons(port);
+        break;
+#endif
+
+#if (NGX_HAVE_UNIX_DOMAIN)
+    case AF_UNIX:
+        break;
+#endif
+
+    default: /* AF_INET */
+        sin = (struct sockaddr_in *) sa;
+        sin->sin_port = htons(port);
+        break;
+    }
+}