Could you please sync the etag algorithm with nginx.

[allex]

https://serverfault.com/questions/690341/algorithm-behind-nginx-etag-generation

1828 
1829     etag->value.len = ngx_sprintf(etag->value.data, "\"%xT-%xO\"",
1830                                   r->headers_out.last_modified_time,
1831                                   r->headers_out.content_length_n)
1832                       - etag->value.data;
1833 
1834     r->headers_out.etag = etag;
1835 
1836     return NGX_OK;

[dougwilson]

The goal of this module is not to mimic nginx, so there isn't any desire to do this. If you want to see it happen, can you please explain the case and perhaps even share code in some language that we can read (i.e. JavaScript)?

[allex]

please see pr #23, for details. actually make the weak etag same with ng default output, in that case we can cache the first request when use nginx upstream a node server with etag.

[dougwilson]

Thanks for the pull request! I left some feedback, but I just found there is already a solution for this on npm: use the following module: https://www.npmjs.com/package/nginx-etag