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director.go
43 lines (34 loc) · 780 Bytes
/
director.go
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package stargate
import (
"fmt"
"net/http"
"net/url"
"strings"
)
type DirectorFunc func(*url.URL) func(*http.Request)
func defaultDirector(route string) DirectorFunc {
return func(origin *url.URL) func(*http.Request) {
return func(r *http.Request) {
r.URL.Path = strings.Replace(r.URL.Path, route, "", 1)
r.URL.RawQuery = combineQueries(origin, r.URL)
r.Header.Add("X-Forwarded-For", r.Host)
r.Header.Add("X-Origin-Host", origin.Host)
r.URL.Scheme = origin.Scheme
r.URL.Host = origin.Host
}
}
}
func combineQueries(src *url.URL, dst *url.URL) string {
q := ""
if src.RawQuery != "" {
q = src.RawQuery
}
if dst.RawQuery != "" {
if q == "" {
q = dst.RawQuery
} else {
q = fmt.Sprintf("%s&%s", q, dst.RawQuery)
}
}
return q
}