diff options
Diffstat (limited to 'vendor/github.com/uber/jaeger-client-go/utils/localip.go')
-rw-r--r-- | vendor/github.com/uber/jaeger-client-go/utils/localip.go | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/vendor/github.com/uber/jaeger-client-go/utils/localip.go b/vendor/github.com/uber/jaeger-client-go/utils/localip.go deleted file mode 100644 index b51af7713..000000000 --- a/vendor/github.com/uber/jaeger-client-go/utils/localip.go +++ /dev/null @@ -1,84 +0,0 @@ -// Copyright (c) 2017 Uber Technologies, Inc. -// -// 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 utils - -import ( - "errors" - "net" -) - -// This code is borrowed from https://github.com/uber/tchannel-go/blob/dev/localip.go - -// scoreAddr scores how likely the given addr is to be a remote address and returns the -// IP to use when listening. Any address which receives a negative score should not be used. -// Scores are calculated as: -// -1 for any unknown IP addresses. -// +300 for IPv4 addresses -// +100 for non-local addresses, extra +100 for "up" interaces. -func scoreAddr(iface net.Interface, addr net.Addr) (int, net.IP) { - var ip net.IP - if netAddr, ok := addr.(*net.IPNet); ok { - ip = netAddr.IP - } else if netIP, ok := addr.(*net.IPAddr); ok { - ip = netIP.IP - } else { - return -1, nil - } - - var score int - if ip.To4() != nil { - score += 300 - } - if iface.Flags&net.FlagLoopback == 0 && !ip.IsLoopback() { - score += 100 - if iface.Flags&net.FlagUp != 0 { - score += 100 - } - } - return score, ip -} - -// HostIP tries to find an IP that can be used by other machines to reach this machine. -func HostIP() (net.IP, error) { - interfaces, err := net.Interfaces() - if err != nil { - return nil, err - } - - bestScore := -1 - var bestIP net.IP - // Select the highest scoring IP as the best IP. - for _, iface := range interfaces { - addrs, err := iface.Addrs() - if err != nil { - // Skip this interface if there is an error. - continue - } - - for _, addr := range addrs { - score, ip := scoreAddr(iface, addr) - if score > bestScore { - bestScore = score - bestIP = ip - } - } - } - - if bestScore == -1 { - return nil, errors.New("no addresses to listen on") - } - - return bestIP, nil -} |