Examples demonstrating how Nginx treats slashes in `location` and `proxy_pass` statements

nginx-location-proxy_pass-and-slashes.txt

How Nginx treats slashes in `location` and `proxy_pass` statements:

Base URL: https://www.my.web.site/pre/fix/page.html

Our decuced rules, apply for each block A-C:
1: Location is passed on  without change
2: Location is removed, '/' is added
3: Location is removed, 'pre/fix' is added
4: Location is removed, 'pre/fix/' is added

Explanation of the following table:
`location` stmt      `proxy_pass` statement         HTTP request that the backend 12.34.56.778 is seeing

A:
location /           http://12.34.56.78             GET /pre/fix/page.html HTTP/1.0
location /           http://12.34.56.78/            GET /pre/fix/page.html HTTP/1.0
location /           http://12.34.56.78/pre/fix     GET /pre/fixpre/fix/page.html HTTP/1.0
location /           http://12.34.56.78/pre/fix/    GET /pre/fix/pre/fix/page.html HTTP/1.0

B:
location /pre/fix    http://12.34.56.78             GET /pre/fix/page.html HTTP/1.0
location /pre/fix    http://12.34.56.78/            GET //page.html HTTP/1.0
location /pre/fix    http://12.34.56.78/pre/fix     GET /pre/fix/page.html HTTP/1.0
location /pre/fix    http://12.34.56.78/pre/fix/    GET /pre/fix//page.html HTTP/1.0

C:
location /pre/fix/   http://12.34.56.78             GET /pre/fix/page.html HTTP/1.0
location /pre/fix/   http://12.34.56.78/            GET /page.html HTTP/1.0
location /pre/fix/   http://12.34.56.78/pre/fix     GET /pre/fixpage.html HTTP/1.0
location /pre/fix/   http://12.34.56.78/pre/fix/    GET /pre/fix/page.html HTTP/1.0

D:
location pre/fix     http://12.34.56.78             404 (this is the reply to the client, nginx does not contact backend)
location pre/fix     http://12.34.56.78/            404
location pre/fix     http://12.34.56.78/pre/fix     404
location pre/fix     http://12.34.56.78/pre/fix/    404

E:
location pre/fix/    http://12.34.56.78             404
location pre/fix/    http://12.34.56.78/            404
location pre/fix/    http://12.34.56.78/pre/fix     404
location pre/fix/    http://12.34.56.78/pre/fix/    404