Use table syntax to work with >lines<

telnet.lua

@@ -1,36 +1,40 @@
+-- Telnet client 
+local telnetClient=nil
+lines = {}
 -- Telnet Server
 function startTelnetServer()
     s=net.createServer(net.TCP, 180)
     s:listen(23,function(c)
-    global_c=c
+	    telnetClient=c
-    printlines = {}
+	    function s_output(str)
-    function s_output(str)
+	      if (telnetClient ~= nil) then
-      if(global_c~=nil) then
+		if (#lines > 0) then
-        if #printlines > 0 then
+		    table.insert(lines, str)
-            printlines[ #printlines + 1] = str
+		else
-        else
+		    table.insert(lines, str)
-            printlines[ #printlines + 1] = str
+		    telnetClient:send("\r") -- Send something, so the queue is read after sending
-            global_c:send("\r") -- Send something, so the queue is read after sending
+		end
-        end
+	      end
-      end
+	    end
-    end
+	    node.output(s_output, 0)
-    node.output(s_output, 0)
+	    c:on("receive",function(c,l)
-    c:on("receive",function(c,l)
+	      node.input(l)
-      node.input(l)
+	    end)
+	    c:on("disconnection",function(c)
+	      node.output(nil)
+	      telnetClient=nil
+	    end)
+	    c:on("sent", function()        
+		if (#lines > 0) then
+		  local localstr = table.remove(lines, 1)
+		  print( tostring(localstr) )
+		  telnetClient:send(localstr)
+		end
+	    end)
+	    print("Welcome to the Wordclock.")
+	    print("- mydofile(\"commands\")")
+	    print("- storeConfig()")
+	    print("Visite https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en for further commands")
     end)
-    c:on("disconnection",function(c)
+    print("Telnetserver started")
-      node.output(nil)
+end
-      global_c=nil
-    end)
-    c:on("sent", function()        
-        if #printlines > 0 then
-          global_c:send(table.remove(printlines, 1))
-        end
-    end)
-    print("Welcome to the Wordclock.")
-    print("- mydofile(\"commands\")")
-    print("- storeConfig()")
-    print("Visite https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en for further commands")
-    end)
-    print("Telnetserver is up")
-end