i tried to https to http reverse proxy. then fail

[uk-taniyama]

export-url : https://export.example.com/api/v1
go-api-url : http://app.example.com/api/v1

Server-URL:
NG : https://export.example.com/api/v1
NG : /api/v1 -> fail

So, i change to swagger data.
Send to client

	swagger.Servers = openapi3.Servers{
		{URL: "/api/v1"},
	}

send to validate middleware.

        // remove servers and  rewrite from relative-path to absolute-path
	swagger.Servers = openapi3.Servers{}
	paths := openapi3.Paths{}
	for k, v := range swagger.Paths {
		paths[path.Join(basePath, k)] = v
	}
	swagger.Paths = paths

[uk-taniyama]

I don't think middleware needs any Server information.
Because it is not possible to know the address accessed by the user under the proxy environment.

[fenollp]

What is the issue?
Where is your issue-reproducing code?
What have you tried?

[uk-taniyama]

frontend server:https://example.com/
-> reverse-proxy ->
backend server:http://goserver/

• OpenAPI spec request:

  https://example.com/api-docs -> http://goserver/api-docs

• pets API request:

  https://example.com/v1/pets -> http://goserver/v1/pets

So. OpenAPI spec's server.url is "https://example.com/v1/".

But goserver cannot match /v1/pets.

goserver_1  | 2021/10/02 13:50:46 routeRegexp:path /v1/pets ^/v1/pets$
goserver_1  | 2021/10/02 13:50:46 methodMatcher
goserver_1  | 2021/10/02 13:50:46 schemeMatcher
goserver_1  | 2021/10/02 13:50:46 1 
goserver_1  | 2021/10/02 13:50:46 2 [https] http false
goserver_1  | 2021/10/02 13:50:46 DONT MATCH [https] &{<nil> <nil> map[] <nil>}
goserver_1  | 2021/10/02 13:50:46 routeRegexp:path /v1/pets ^/v1/pets/(?P<v0>[^/]+)$
goserver_1  | 2021/10/02 13:50:46 DONT MATCH &{/v1/pets/{petId} 0 {false true} 0xc00010fae0 /v1/pets/%s [petId] [0xc00010f9a0] false} &{<nil> <nil> map[] <nil>}

sample project is follows:
https://github.com/uk-taniyama/kin-openapi-issue420