Syntax: server_tokens on | off | string; Default: server_tokens on; Context: http, server, location Enables or disables emitting nginx version in error messages and in the “Server” response header field. Additionally, as part of our commercial subscription, starting from version 1.9.13 the signature in error messages and the “Server” response header field value can be set explicitly using the string with variables. An empty string disables the emission of the “Server

Syntax: proxy_ssl_server_name on | off; Default: proxy_ssl_server_name off; Context: http, server, location This directive appeared in version 1.7.0. Enables or disables passing of the server name through TLS Server Name Indication extension (SNI, RFC 6066) when establishing a connection with the proxied HTTPS server.

Syntax: rewrite regex replacement [flag]; Default: — Context: server, location, if If the specified regular expression matches a request URI, URI is changed as specified in the replacement string. The rewrite directives are executed sequentially in order of their appearance in the configuration file. It is possible to terminate further processing of the directives using flags. If a replacement string starts with “http://”, “https://”, or “$scheme”, the processing stops

Syntax: fastcgi_busy_buffers_size size; Default: fastcgi_busy_buffers_size 8k|16k; Context: http, server, location When buffering of responses from the FastCGI server is enabled, limits the total size of buffers that can be busy sending a response to the client while the response is not yet fully read. In the meantime, the rest of the buffers can be used for reading the response and, if needed, buffering part of the response to a temporary file. By default, size is limited by the s

Syntax: gzip on | off; Default: gzip off; Context: http, server, location, if in location Enables or disables gzipping of responses.

Syntax: proxy_ssl_password_file file; Default: — Context: http, server, location This directive appeared in version 1.7.8. Specifies a file with passphrases for secret keys where each passphrase is specified on a separate line. Passphrases are tried in turn when loading the key.

Syntax: proxy_buffers number size; Default: proxy_buffers 8 4k|8k; Context: http, server, location Sets the number and size of the buffers used for reading a response from the proxied server, for a single connection. By default, the buffer size is equal to one memory page. This is either 4K or 8K, depending on a platform.

Syntax: referer_hash_max_size size; Default: referer_hash_max_size 2048; Context: server, location This directive appeared in version 1.0.5. Sets the maximum size of the valid referers hash tables. The details of setting up hash tables are provided in a separate document.

Syntax: uwsgi_request_buffering on | off; Default: uwsgi_request_buffering on; Context: http, server, location This directive appeared in version 1.7.11. Enables or disables buffering of a client request body. When buffering is enabled, the entire request body is read from the client before sending the request to a uwsgi server. When buffering is disabled, the request body is sent to the uwsgi server immediately as it is received. In this case, the request cannot be passed to

Syntax: uwsgi_cache_use_stale error | timeout | invalid_header | updating | http_500 | http_503 | http_403 | http_404 | off ...; Default: uwsgi_cache_use_stale off; Context: http, server, location Determines in which cases a stale cached response can be used when an error occurs during communication with the uwsgi server. The directive’s parameters match the parameters of the uwsgi_next_upstream directive. The error parameter also permits