stunnel identd: increase request_queue_size, default 5 is quite low. While here, switch to threading tcp server to better cope with concurrent requests

security/stunnel/Makefile

@@ -1,5 +1,5 @@
 PLUGIN_NAME=		stunnel
-PLUGIN_VERSION=		1.0
+PLUGIN_VERSION=		1.0.1
 PLUGIN_COMMENT=		stunnel TLS proxy
 PLUGIN_MAINTAINER=	ad@opnsense.org
 PLUGIN_DEPENDS=		stunnel

security/stunnel/src/opnsense/scripts/stunnel/identd_stunnel.py

@@ -187,8 +187,9 @@ class RequestHandler(socketserver.StreamRequestHandler):
 
 
 def run_listener():
-    server = socketserver.TCPServer(('0.0.0.0', 113), RequestHandler, bind_and_activate=False)
+    server = socketserver.ThreadingTCPServer(('0.0.0.0', 113), RequestHandler, bind_and_activate=False)
     server.allow_reuse_address = True
+    server.request_queue_size = 128
     server.server_bind()
     server.server_activate()
     server.serve_forever()