Syntax: xml_entities path; Default: — Context: http, server, location Specifies the DTD file that declares character entities. This file is compiled at the configuration stage. For technical reasons, the module is unable to use the external subset declared in the processed XML, so it is ignored and a specially defined file is used instead. This file should not describe the XML structure. It is enough to declare just the required character entities, for example: <!ENTITY nbsp "

Syntax: geoip_city file; Default: — Context: http Specifies a database used to determine the country, region, and city depending on the client IP address. The following variables are available when using this database: $geoip_area_code telephone area code (US only). This variable may contain outdated information since the corresponding database field is deprecated. $geoip_city_continent_code two-letter continent code, for example, “EU”, “NA”. $geoip_city_country_code two-

Syntax: autoindex_localtime on | off; Default: autoindex_localtime off; Context: http, server, location For the HTML format, specifies whether times in the directory listing should be output in the local time zone or UTC.

Syntax: charset charset | off; Default: charset off; Context: http, server, location, if in location 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 value

Syntax: ssl_verify_depth number; Default: ssl_verify_depth 1; Context: mail, server This directive appeared in version 1.7.11. Sets the verification depth in the client certificates chain.

Syntax: fastcgi_cache_lock_timeout time; Default: fastcgi_cache_lock_timeout 5s; Context: http, server, location This directive appeared in version 1.1.12. Sets a timeout for fastcgi_cache_lock. When the time expires, the request will be passed to the FastCGI server, however, the response will not be cached. Before 1.7.8, the response could be cached.

Syntax: spdy_headers_comp level; Default: spdy_headers_comp 0; Context: http, server Sets the header compression level of a response in a range from 1 (fastest, less compression) to 9 (slowest, best compression). The special value 0 turns off the header compression.

Syntax: memcached_next_upstream_timeout time; Default: memcached_next_upstream_timeout 0; Context: http, server, location This directive appeared in version 1.7.5. Limits the time during which a request can be passed to the next server. The 0 value turns off this limitation.

Syntax: client_header_buffer_size size; Default: client_header_buffer_size 1k; Context: http, server Sets buffer size for reading client request header. For most requests, a buffer of 1K bytes is enough. However, if a request includes long cookies, or comes from a WAP client, it may not fit into 1K. If a request line or a request header field does not fit into this buffer then larger buffers, configured by the large_client_header_buffers directive, are allocated.

Syntax: deny address | CIDR | unix: | all; Default: — Context: http, server, location, limit_except Denies access for the specified network or address. If the special value unix: is specified (1.5.1), denies access for all UNIX-domain sockets.