The magic slash in nginx reverse proxy

nginx magic” in reverse proxy

When configuring the nginx reverse proxy, the slash in location and proxy_pass causes all sorts of problems. Sometimes one more slash or one less slash causes completely different results, so specially after location and proxy_passIn the case of no diagonal line, the arrangement and combination are made, and a complete test is carried out to find out the principle, so as to improve the posture level.

> test method.

1. Configure different rules in nginx A, then request nginx A:http://192.168.1.48/foo/api
2. Observe the request received by nginx B. The specific operation is to look at the $request field in the log.

case 1

nginx ATo configure:

location /foo/ {
   proxy_pass http://192.168.1.56/;
}
nginx BRequest received: /api

case 2

nginx ATo configure:

location /foo/ {
   proxy_pass http://192.168.1.56/;
}
nginx BRequest received: //api

case 3

nginx ATo configure:

location /foo/ {
   proxy_pass http://192.168.1.56/;
}
nginx BRequest received: /foo/api

Case 4

nginx ATo configure:

location /foo/ {
   proxy_pass http://192.168.1.56/;
}
nginx BRequest received: /foo/api

case 5

nginx ATo configure:

location /foo/ {
   proxy_pass http://192.168.1.56/bar/;
}
nginx BRequest received: /bar/api

case 6

nginx ATo configure:

location /foo {
   proxy_pass http://192.168.1.56/bar/;
}
nginx BRequest received: /bar//api

case 7

nginx ATo configure:

location /foo/ {
   proxy_pass http://192.168.1.56/bar;
}
nginx BRequest received: /barapi

case 8

nginx ATo configure:

location /foo {
   proxy_pass http://192.168.1.56/bar;
}
nginx BRequest received: /bar/api

Do you feel dizzy here? Is it regular?

Now, these cases are arranged in a table, which indicates the request received by nginx B.

Table 1

case	location	proxy_pass	Result
1	/foo/	http://192.168.1.48/	/api
2	/foo	http://192.168.1.48/	//api
3	/foo/	http://192.168.1.48	/foo/api
4	/foo	http://192.168.1.48	/foo/api

Table two

case	location	proxy_pass	Result
5	/foo/	http://192.168.1.48/bar/	/bar/api
6	/foo	http://192.168.1.48/bar/	/bar//api
7	/foo/	http://192.168.1.48/bar	/barapi
8	/foo	http://192.168.1.48/bar	/bar/api

Author waliwaliPosted on 2018-12-262018-12-22Categories default