add nginx sample conf

Author: michaelliao

samples/node/web/ws/ws-with-koa/nginx-sample.conf

@@ -0,0 +1,29 @@
+server {
+    listen      80;
+    server_name localhost;
+
+    gzip            on;
+    gzip_min_length 1024;
+    gzip_buffers    4 8k;
+    gzip_types      text/css application/x-javascript application/json;
+
+    sendfile on;
+
+    location ^~ /static/ {
+        root /path/to/ws-with-koa;
+    }
+
+    location ^~ /ws/ {
+        proxy_pass         http://127.0.0.1:3000;
+        proxy_http_version 1.1;
+        proxy_set_header   Upgrade $http_upgrade;
+        proxy_set_header   Connection "upgrade";
+    }
+
+    location / {
+        proxy_pass       http://127.0.0.1:3000;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    }
+}