// Copyright 2012-present Oliver Eilhard. All rights reserved. // Use of this source code is governed by a MIT-license. // See http://olivere.mit-license.org/license.txt for details. package elastic import "net/url" // canonicalize takes a list of URLs and returns its canonicalized form, i.e. // remove anything but scheme, userinfo, host, path, and port. // It also removes all trailing slashes. It also skips invalid URLs or // URLs that do not use protocol http or https. // // Example: // http://127.0.0.1:9200/?query=1 -> http://127.0.0.1:9200 // http://127.0.0.1:9200/db1/ -> http://127.0.0.1:9200/db1 // 127.0.0.1:9200 -> http://127.0.0.1:9200 func canonicalize(rawurls ...string) []string { var canonicalized []string for _, rawurl := range rawurls { u, err := url.Parse(rawurl) if err == nil { if len(u.Scheme) == 0 { u.Scheme = DefaultScheme } if u.Scheme == "http" || u.Scheme == "https" { // Trim trailing slashes for len(u.Path) > 0 && u.Path[len(u.Path)-1] == '/' { u.Path = u.Path[0 : len(u.Path)-1] } u.Fragment = "" u.RawQuery = "" canonicalized = append(canonicalized, u.String()) } } } return canonicalized }