mv src/common src/utils src/grpc-etcdv3 to pkg

pkg/utils/get_server_ip.go

@@ -0,0 +1,35 @@
+package utils
+
+import (
+	"Open_IM/pkg/common/config"
+	"net"
+)
+
+var ServerIP = ""
+
+func init() {
+	//fixme In the configuration file, ip takes precedence, if not, get the valid network card ip of the machine
+	if config.Config.ServerIP != "" {
+		ServerIP = config.Config.ServerIP
+		return
+	}
+	//fixme Get the ip of the local network card
+	netInterfaces, err := net.Interfaces()
+	if err != nil {
+		panic(err)
+	}
+	for i := 0; i < len(netInterfaces); i++ {
+		//Exclude useless network cards by judging the net.flag Up flag
+		if (netInterfaces[i].Flags & net.FlagUp) != 0 {
+			address, _ := netInterfaces[i].Addrs()
+			for _, addr := range address {
+				if ipNet, ok := addr.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
+					if ipNet.IP.To4() != nil {
+						ServerIP = ipNet.IP.String()
+						return
+					}
+				}
+			}
+		}
+	}
+}