Nginx appears the plain HTTP request is sent to HTTPS Port problem resolution _nginx

Today in the configuration of the Nginx+ssl when the title of the mistake, and later with the Niang a bit of sex after finding a solution, quite useful, conveniently turned.

Generally in the configuration of Vhost will have PHP parsing a paragraph, such as:

Copy Code code as follows:

Location ~. *\. (PHP|PHP5)? $
{
Try_files $uri = 404;
Fastcgi_pass Unix:/tmp/php-cgi.sock;
Fastcgi_param HTTPS $https If_not_empty;
Fastcgi_index index.php;
Include fcgi.conf;
}

Explain:

Many people think that using Fastcgi_param HTTPS on;

This is true, but forcing the use of this parameter is not very effective!

The best answer is Fastcgi_param HTTPS $https if_not_empty; (Refer to the official link below Nginx), the HTTPS protocol is used to automatically use HTTPS on, otherwise the Fastcgi_param HTTPS parameter is ignored.

Embedded variables:

$https – returns "on" if the link is SSL, otherwise an empty string is returned.

If_not_empty; – passed to the server when the parameter has a value

Note: This method is only suitable for versions after Nginx 1.1.11

Reference:
stackoverflow/nginx#1/nginx#2