diff --git a/.build/build.ps1 b/.build/build.ps1
index f5f517709..655f8ea30 100644
--- a/.build/build.ps1
+++ b/.build/build.ps1
@@ -120,7 +120,7 @@ Task Document -depends Build {
 		git config --global credential.helper store
 		Add-Content "$HOME\.git-credentials" "https://$($env:github_access_token):x-oauth-basic@github.com`n"
 		git config --global user.email $env:github_email
-		git config --global user.name "buildbot121"
+		git config --global user.name "buildbot171"
 		git add . -A
 		git commit -m "API documentation update by build server"
 		git push origin master
diff --git a/appveyor.yml b/appveyor.yml
index 9930bd74d..a6cb1a6ac 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -45,7 +45,7 @@ test_script:
 skip_tags: true
 
 skip_commits:
-  author: buildbot121
+  author: buildbot171
   files:
     - docs/*
     - .vscode/*
@@ -64,9 +64,9 @@ artifacts:
 
 environment:
   github_access_token:
-    secure: BGdKiI7FwHGkFt+/OmgZDkE1hzLqLrTxcc9c+joVqGyO4LvesHb1sR6hzisVwVPm
+    secure: mZLeq0GTB9kb5b6+HnVpJB6hhiYMJIQ2+Zf/DwZ/LEIyxJaYB1nx36aGHXE9q1cN
   github_email:
-    secure: wvYod3JLufbIBkavRXlCP724wJkhqR2RRuLLaPnqfps=
+    secure: iBJZGqxyiHVNeYI0uIW+MdGd3I3pg8brJtETNRkKe/A=
   nuget_access_token:
     secure: ZbRmjOcp+TDllRV1wxqLZjdRV7hld388rXlWVJuGGiQleomP9Ku+Nsy3a75E7/9k
 deploy:
diff --git a/src/Titanium.Web.Proxy/Network/Tcp/TcpConnectionFactory.cs b/src/Titanium.Web.Proxy/Network/Tcp/TcpConnectionFactory.cs
index e40f5b34b..8848fc597 100644
--- a/src/Titanium.Web.Proxy/Network/Tcp/TcpConnectionFactory.cs
+++ b/src/Titanium.Web.Proxy/Network/Tcp/TcpConnectionFactory.cs
@@ -385,6 +385,11 @@ private async Task<TcpServerConnection> createServerConnection(string remoteHost
                             tcpServerSocket = new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp);
                         }
 
+                        if (upStreamEndPoint != null)
+                        {
+                            tcpServerSocket.Bind(upStreamEndPoint);
+                        }
+
                         tcpServerSocket.NoDelay = proxyServer.NoDelay;
                         tcpServerSocket.ReceiveTimeout = proxyServer.ConnectionTimeOutSeconds * 1000;
                         tcpServerSocket.SendTimeout = proxyServer.ConnectionTimeOutSeconds * 1000;