charset

Adds the specified charset to the “Content-Type” response header field. If this charset is different from the charset specified in the source_charset directive, a conversion is performed.

The parameter off cancels the addition of charset to the “Content-Type” response header field.

A charset can be defined with a variable:

charset $charset;

In such a case, all possible values of a variable need to be present in the configuration at least once in the form of the charset_map, charset, or source_charset directives. For utf-8, windows-1251, and koi8-r charsets, it is sufficient to include the files conf/koi-win, conf/koi-utf, and conf/win-utf into configuration. For other charsets, simply making a fictitious conversion table works, for example:

charset_map iso-8859-5 _ { }

In addition, a charset can be set in the “X-Accel-Charset” response header field. This capability can be disabled using the proxy_ignore_headers, fastcgi_ignore_headers, uwsgi_ignore_headers, and scgi_ignore_headers directives.