VOL-381 add unum container to support ONOS cluster formation under swarm
Change-Id: Ic260edda19bb199ed040f05164ab605f28c919d0
diff --git a/unum/vendor/github.com/docker/go-connections/sockets/proxy.go b/unum/vendor/github.com/docker/go-connections/sockets/proxy.go
new file mode 100644
index 0000000..98e9a1d
--- /dev/null
+++ b/unum/vendor/github.com/docker/go-connections/sockets/proxy.go
@@ -0,0 +1,51 @@
+package sockets
+
+import (
+ "net"
+ "net/url"
+ "os"
+ "strings"
+
+ "golang.org/x/net/proxy"
+)
+
+// GetProxyEnv allows access to the uppercase and the lowercase forms of
+// proxy-related variables. See the Go specification for details on these
+// variables. https://golang.org/pkg/net/http/
+func GetProxyEnv(key string) string {
+ proxyValue := os.Getenv(strings.ToUpper(key))
+ if proxyValue == "" {
+ return os.Getenv(strings.ToLower(key))
+ }
+ return proxyValue
+}
+
+// DialerFromEnvironment takes in a "direct" *net.Dialer and returns a
+// proxy.Dialer which will route the connections through the proxy using the
+// given dialer.
+func DialerFromEnvironment(direct *net.Dialer) (proxy.Dialer, error) {
+ allProxy := GetProxyEnv("all_proxy")
+ if len(allProxy) == 0 {
+ return direct, nil
+ }
+
+ proxyURL, err := url.Parse(allProxy)
+ if err != nil {
+ return direct, err
+ }
+
+ proxyFromURL, err := proxy.FromURL(proxyURL, direct)
+ if err != nil {
+ return direct, err
+ }
+
+ noProxy := GetProxyEnv("no_proxy")
+ if len(noProxy) == 0 {
+ return proxyFromURL, nil
+ }
+
+ perHost := proxy.NewPerHost(proxyFromURL, direct)
+ perHost.AddFromString(noProxy)
+
+ return perHost, nil
+}