Invalid ports added in redirects on AWS EC2 nginx

[Maxim Dounin]

Hello!

On Sun, Jun 01, 2014 at 01:48:09PM -0400, allang wrote:

> On AWS, I'm trying to migrate a PHP Symfony app running on nginx. I want to
> be able to test the app by directly talking to the EC2 server and via an
> Elastic Load Balancer (ELB -the public route in).
> 
> I've setup the ELB to decrypt all the SSL traffic and pass this on to my EC2
> server via port 80, as well as pass port 80 directly onto my EC2 server via
> port 80.
> 
> Initially this caused infinite redirects in my app but I researched and then
> fixed this by adding
> 
> fastcgi_param HTTPS $https;
> with some custom logic that looks at $http_x_forwarded_proto to figure out
> when its actually via SSL.
> 
> There remains one issue I can't solve. When a user logs into the Symfony
> app, if they come via the ELB, the form POST eventually returns a redirect
> back to https://elb.mysite.com:80/dashboard instead of
> https://elb.mysite.com/dashboard which gives the user an error of "SSL
> connection error".
> 
> I've tried setting
> 
> fastcgi_param SERVER_PORT $fastcgi_port; 
> to force it away from 80 and I've also added the

[...]

>                 fastcgi_param HTTPS $fastcgi_https;
> #                fastcgi_param SERVER_PORT $fastcgi_port;
>                 #fastcgi_index  index.php;
>                 fastcgi_param  SCRIPT_FILENAME 
> /var/www/vhosts/mysite.com/web$fastcgi_script_name;
>                 include fastcgi_params;

Make sure you've commented out SERVER_PORT from the fastcgi_params 
file.

-- 
Maxim Dounin
http://nginx.org/