Initial nginx reverse proxy for the IPFS IP

It supports cat and add for now. I have tried it using the ipfs-api npm
module

site-cookbooks/kosmos-ipfs/templates/default/nginx_conf_ipfs.kosmos.org.erb

@@ -1,21 +1,45 @@
+upstream _ipfs {
+  server   localhost:<%= @ipfs_api_port %>;
+}
+
+# Used by Let's Encrypt (certbot in webroot mode)
+server {
+  listen 80;
+  server_name <%= @server_name %>;
+  location /.well-known {
+    root "<%= @root_directory %>";
+  }
+  location / {
+    return 301 https://$host$request_uri;
+  }
+}
+
 server {
-  listen 80; # For Let's Encrypt
   <% if File.exist?(@ssl_cert) && File.exist?(@ssl_key) -%>
   listen 443 ssl spdy;
+  <% else -%>
+  listen 80;
   <% end -%>
 
   server_name <%= @server_name %>;
 
-  # Used by Let's Encrypt (certbot in webroot mode)
-  location /.well-known {
-    root "<%= @root_directory %>";
-  }
-
   location / {
     return 200 'Nothing to see here';
     add_header Content-Type text/plain;
   }
 
+  # Increase number of buffers. Default is 8
+  proxy_buffers 1024 8k;
+  proxy_http_version 1.1;
+
+  location /api/v0/cat {
+    proxy_pass http://_ipfs/api/v0/cat;
+  }
+
+  location /api/v0/add {
+    proxy_pass http://_ipfs/api/v0/add;
+  }
+
   <% if File.exist?(@ssl_cert) && File.exist?(@ssl_key) -%>
   ssl_certificate <%= @ssl_cert %>;
   ssl_certificate_key <%= @ssl_key %>;