http_mirror module

The module implements mirroring of an original request by creating background mirror subrequests. Responses to mirror subrequests are ignored.

Example Configuration

location / {
    mirror /mirror;
    proxy_pass http://backend;
}

location = /mirror {
    internal;
    proxy_pass http://test_backend$request_uri;
}

Directives

mirror

Syntax:

mirror uri | off;

Default:

mirror off;

Context:

http, server, location

Sets the URI to which an original request will be mirrored. Several mirrors can be specified on the same configuration level.

mirror_request_body

Syntax:

mirror_request_body on | off;

Default:

mirror_request_body on;

Context:

http, server, location

Indicates whether the client request body is mirrored. When enabled, the client request body will be read prior to creating mirror subrequests. In this case, unbuffered client request body proxying set by the proxy_request_buffering, fastcgi_request_buffering, scgi_request_buffering and uwsgi_request_buffering directives will be disabled.

location / {
    mirror /mirror;
    mirror_request_body off;
    proxy_pass http://backend;
}

location = /mirror {
    internal;
    proxy_pass http://log_backend;
    proxy_pass_request_body off;
    proxy_set_header Content-Length "";
    proxy_set_header X-Original-URI $request_uri;
}