From 8a42d3c9d4b58d2b81725b87067d5c32bb620710 Mon Sep 17 00:00:00 2001
From: celeron533 <zhuyilun8@hotmail.com>
Date: Sat, 13 Apr 2019 20:41:58 +0800
Subject: [PATCH] Exception for port assignment

When error code is SocketError.AccessDenied/10013(WSAEACCES), the port is reserved by system and you may not find the process name in `netstat`.
 https://github.com/shadowsocks/shadowsocks-windows/issues/1835#issuecomment-453528715
---
 shadowsocks-csharp/Controller/ShadowsocksController.cs | 6 +++++-
 shadowsocks-csharp/Data/ja.txt                         | 1 +
 shadowsocks-csharp/Data/zh_CN.txt                      | 1 +
 shadowsocks-csharp/Data/zh_TW.txt                      | 1 +
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/shadowsocks-csharp/Controller/ShadowsocksController.cs b/shadowsocks-csharp/Controller/ShadowsocksController.cs
index 9a9c3a48..b103c17a 100644
--- a/shadowsocks-csharp/Controller/ShadowsocksController.cs
+++ b/shadowsocks-csharp/Controller/ShadowsocksController.cs
@@ -551,10 +551,14 @@ namespace Shadowsocks.Controller
                 if (e is SocketException)
                 {
                     SocketException se = (SocketException)e;
-                    if (se.SocketErrorCode == SocketError.AccessDenied)
+                    if (se.SocketErrorCode == SocketError.AddressAlreadyInUse)
                     {
                         e = new Exception(I18N.GetString("Port {0} already in use", _config.localPort), e);
                     }
+                    else if (se.SocketErrorCode == SocketError.AccessDenied)
+                    {
+                        e = new Exception(I18N.GetString("Port {0} is reserved by system", _config.localPort), e);
+                    }
                 }
                 Logging.LogUsefulException(e);
                 ReportError(e);
diff --git a/shadowsocks-csharp/Data/ja.txt b/shadowsocks-csharp/Data/ja.txt
index abba4c7a..690e0d58 100644
--- a/shadowsocks-csharp/Data/ja.txt
+++ b/shadowsocks-csharp/Data/ja.txt
@@ -118,6 +118,7 @@ Reg Hotkeys At Startup=起動時にホットキーを登録する
 
 Shadowsocks Error: {0}=Shadowsocks エラー: {0}
 Port {0} already in use=ポート番号 {0} は既に使用されています。
+Port {0} is reserved by system= ポート番号 {0} はシステムによって予約されています
 Invalid server address=サーバーアドレスが無効です。
 Illegal port number format=ポート番号のフォーマットが無効です。
 Illegal timeout format=タイムアウト値のフォーマットが無効です。
diff --git a/shadowsocks-csharp/Data/zh_CN.txt b/shadowsocks-csharp/Data/zh_CN.txt
index 66fb2c14..b26593b0 100644
--- a/shadowsocks-csharp/Data/zh_CN.txt
+++ b/shadowsocks-csharp/Data/zh_CN.txt
@@ -119,6 +119,7 @@ Reg Hotkeys At Startup=启动时注册快捷键
 
 Shadowsocks Error: {0}=Shadowsocks 错误: {0}
 Port {0} already in use=端口 {0} 已被占用
+Port {0} is reserved by system=端口 {0} 是系统保留端口
 Invalid server address=非法服务器地址
 Illegal port number format=非法端口格式
 Illegal timeout format=非法超时格式
diff --git a/shadowsocks-csharp/Data/zh_TW.txt b/shadowsocks-csharp/Data/zh_TW.txt
index c2157bbb..d4b75ef8 100644
--- a/shadowsocks-csharp/Data/zh_TW.txt
+++ b/shadowsocks-csharp/Data/zh_TW.txt
@@ -118,6 +118,7 @@ Reg Hotkeys At Startup=啟動時註冊快速鍵
 
 Shadowsocks Error: {0}=Shadowsocks 錯誤: {0}
 Port {0} already in use=連接埠號碼 {0} 已被使用
+Port {0} is reserved by system=連接埠號碼 {0} 由系統保留
 Invalid server address=無效伺服器位址
 Illegal port number format=無效連接埠號碼格式
 Illegal timeout format=無效逾時格式