From bed11276b9a82c6fbf7cd611f4e69ebe639c1384 Mon Sep 17 00:00:00 2001
From: Mygod <contact-git@mygod.be>
Date: Wed, 31 Jul 2019 08:47:08 +0800
Subject: [PATCH] Refine error report

---
 mobile/src/main/java/be/mygod/vpnhotspot/RoutingManager.kt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/RoutingManager.kt b/mobile/src/main/java/be/mygod/vpnhotspot/RoutingManager.kt
index db6fab62..efdf895e 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/RoutingManager.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/RoutingManager.kt
@@ -59,10 +59,10 @@ abstract class RoutingManager(private val caller: Any, val downstream: String, p
         if (isWifi) WifiDoubleLock.acquire(this)
     }
 
-    fun start() = when (active.putIfAbsentCompat(downstream, this)) {
+    fun start() = when (val other = active.putIfAbsentCompat(downstream, this)) {
         null -> initRouting()
         this -> true    // already started
-        else -> throw IllegalStateException("Double routing detected from $caller")
+        else -> throw IllegalStateException("Double routing detected for $downstream from $caller != ${other.caller}")
     }
 
     private fun initRouting() = try {