rewrite POST into GET?

Fri Feb 15 04:13:57 MSK 2008

Wow Igor, that was fast! Thank you!

I downloaded the development version of nginx (I'd been using the  
previous stable version 0.5.35), and applied the patch. Unfortunately,  
when I started the new version of the server, the post_to_static  
didn't change the 405 result sent back to facebook.

My configuration file looks like this:

http {
     ...
     server {
         listen       8080;
         server_name  localhost;

	# set the max size for file uploads to 50 MB.
	client_max_body_size 50M;

         #charset koi8-r;

         access_log  logs/host.vhost.access.log  main;
	root /usr/local/webapps/listage/current/public;

	if (-f $document_root/system/maintenance.html) {
		rewrite ^(.*)$ /system/maintenance.html last;
		break;
		post_to_static on;
	}

         location / {
         ...
         }
     }
}

Do I have that right?

I tried it manually and got the same error:

mark$ telnet localhost 8080
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
POST / HTTP/1.0
Content-Length: 0

HTTP/1.1 405 Not Allowed
Server: nginx/0.6.26
Date: Fri, 15 Feb 2008 01:12:06 GMT
Content-Type: text/html
Content-Length: 173
Connection: close

<html>
<head><title>405 Not Allowed</title></head>
<body bgcolor="white">
<center><h1>405 Not Allowed</h1></center>
<hr><center>nginx/0.6.26</center>
</body>
</html>
Connection closed by foreign host.

Mark

On Feb 14, 2008, at 6:01 AM, Igor Sysoev wrote:

> On Thu, Feb 14, 2008 at 02:12:35AM -0800, Mark Slater wrote:
>
>> I'm working on a facebook application built using Rails. This is my
>> first time deploying a Rails site, and I'm setting up Capistrano to  
>> do
>> the heavy lifting. I've got it creating a "down for maintenance" file
>> that I would like served to all facebook requests when I'm updating
>> things, but facebook always sends a POST request. This causes Nginx  
>> to
>> respond with a 405 and report "client sent invalid method...";
>> obviously you can't really POST to a static page.
>>
>> Is there a way I can re-direct POST requests to GET requests or force
>> Nginx to return the static page regardless of the method used to
>> access it? My backup plan is to deploy a second app on a different  
>> set
>> of ports that always returns the "down for maintenance" message....
>> but it seems silly to run one app to report you're upgrading another.
>
> The attached patch adds the "post_to_static" directive:
>
>         location / {
>              post_to_static  on;
>         }
>
> or
>
>     server {
>
>          if ( maintaince  ) {
>
>              ...
>              break;
>
>              post_to_static  on;
>          }
>
>
> -- 
> Igor Sysoev
> http://sysoev.ru/en/
> <post_to_static.txt>