| // Copyright 2016 The etcd Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package transport |
| |
| import ( |
| "fmt" |
| "strings" |
| "time" |
| ) |
| |
| // ValidateSecureEndpoints scans the given endpoints against tls info, returning only those |
| // endpoints that could be validated as secure. |
| func ValidateSecureEndpoints(tlsInfo TLSInfo, eps []string) ([]string, error) { |
| t, err := NewTransport(tlsInfo, 5*time.Second) |
| if err != nil { |
| return nil, err |
| } |
| var errs []string |
| var endpoints []string |
| for _, ep := range eps { |
| if !strings.HasPrefix(ep, "https://") { |
| errs = append(errs, fmt.Sprintf("%q is insecure", ep)) |
| continue |
| } |
| conn, cerr := t.Dial("tcp", ep[len("https://"):]) |
| if cerr != nil { |
| errs = append(errs, fmt.Sprintf("%q failed to dial (%v)", ep, cerr)) |
| continue |
| } |
| conn.Close() |
| endpoints = append(endpoints, ep) |
| } |
| if len(errs) != 0 { |
| err = fmt.Errorf("%s", strings.Join(errs, ",")) |
| } |
| return endpoints, err |
| } |
