Added load balancer module

- Added load balancer module wip
- Updated geoipv4
- Reduced uptime timeout to 5 sec
- Optimized rate limit implementation
- Fixed minor UI bug in stream proxy

src/web/hosterror.html

@@ -14,7 +14,7 @@
         <script src="https://cdnjs.cloudflare.com/ajax/libs/fomantic-ui/2.9.2/semantic.min.js"></script>
         <title>404 - Host Not Found</title>
         <style>
-            h1, h2, h3, h4, h5, p, a, span{
+            h1, h2, h3, h4, h5, p, a, span, .ui.list .item{
                 font-family: 'Noto Sans TC', sans-serif;
                 font-weight: 300;
                 color: rgb(88, 88, 88)
@@ -22,9 +22,6 @@
 
             .diagram{
                 background-color: #ebebeb;
-                box-shadow: 
-                    inset 0px 11px 8px -10px #CCC,
-                    inset 0px -11px 8px -10px #CCC; 
                 padding-bottom: 2em;
             }
 
@@ -135,7 +132,7 @@
                         <p>Please try again in a few minutes</p>
                         <h5 style="font-weight: 500;">If you are the owner of this website:</h5>
                         <div class="ui bulleted list">
-                            <div class="item">Check if the target web server is online</div>
+                            <div class="item">Check if the proxy rules that match this hostname exists</div>
                             <div class="item">Visit the Reverse Proxy management interface to correct any setting errors</div>
                         </div>
                     </div>