feat: share link

internal/shareLink/shareLink.go

@@ -0,0 +1,29 @@
+package sharelink
+
+import (
+	"fmt"
+	"lash"
+	"lash/internal/errx"
+	"net"
+)
+
+func GenerateShareLink(port int) string {
+	link := "http://"
+	link += getLocalIP()
+	link += fmt.Sprintf(":%d", port)
+	link += "/"
+	link += lash.ShareLinkToken
+	return link
+}
+
+func getLocalIP() string {
+    conn, err := net.Dial("udp", "8.8.8.8:80")
+    if err != nil {
+	    errx.FatalPerror(err)
+    }
+    defer conn.Close()
+
+    localAddress := conn.LocalAddr().(*net.UDPAddr)
+
+    return localAddress.IP.String()
+}