diff --git a/source/NetCoreServer/SslClient.cs b/source/NetCoreServer/SslClient.cs
index 3a4f643..9a8de12 100644
--- a/source/NetCoreServer/SslClient.cs
+++ b/source/NetCoreServer/SslClient.cs
@@ -581,7 +581,7 @@ public virtual string Receive(long size)
         public virtual void ReceiveAsync()
         {
             // Try to receive datagram
-            if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+            if (Thread.CurrentThread.ManagedThreadId == _receiveThreadId)
                 ThreadPool.QueueUserWorkItem(_ => TryReceive());
             else
                 TryReceive();
diff --git a/source/NetCoreServer/SslSession.cs b/source/NetCoreServer/SslSession.cs
index 552980a..2bdfa1e 100644
--- a/source/NetCoreServer/SslSession.cs
+++ b/source/NetCoreServer/SslSession.cs
@@ -429,7 +429,7 @@ public virtual string Receive(long size)
         public virtual void ReceiveAsync()
         {
             // Try to receive datagram
-            if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+            if (Thread.CurrentThread.ManagedThreadId == _receiveThreadId)
                 ThreadPool.QueueUserWorkItem(_ => TryReceive());
             else
                 TryReceive();
diff --git a/source/NetCoreServer/TcpClient.cs b/source/NetCoreServer/TcpClient.cs
index 273da1f..6c17f12 100644
--- a/source/NetCoreServer/TcpClient.cs
+++ b/source/NetCoreServer/TcpClient.cs
@@ -514,7 +514,7 @@ public virtual string Receive(long size)
         public virtual void ReceiveAsync()
         {
             // Try to receive datagram
-            if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+            if (Thread.CurrentThread.ManagedThreadId == _receiveThreadId)
                 ThreadPool.QueueUserWorkItem(_ => TryReceive());
             else
                 TryReceive();
@@ -694,6 +694,7 @@ private void ProcessReceive(SocketAsyncEventArgs e)
             if (!IsConnected)
                 return;
 
+            bool recursive = (Thread.CurrentThread.ManagedThreadId == _receiveThreadId);
             long size = e.BytesTransferred;
 
             // Received some data from the server
@@ -719,7 +720,7 @@ private void ProcessReceive(SocketAsyncEventArgs e)
                 // If zero is returned from a read operation, the remote end has closed the connection
                 if (size > 0)
                 {
-                    if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+                    if (recursive)
                         ThreadPool.QueueUserWorkItem(_ => TryReceive());
                     else
                         TryReceive();
@@ -744,6 +745,7 @@ private void ProcessSend(SocketAsyncEventArgs e)
             if (!IsConnected)
                 return;
 
+            bool recursive = (Thread.CurrentThread.ManagedThreadId == _sendThreadId);
             long size = e.BytesTransferred;
 
             // Send some data to the server
@@ -774,7 +776,7 @@ private void ProcessSend(SocketAsyncEventArgs e)
             // Try to send again if the client is valid
             if (e.SocketError == SocketError.Success)
             {
-                if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+                if (recursive)
                     ThreadPool.QueueUserWorkItem(_ => TrySend());
                 else
                     TrySend();
diff --git a/source/NetCoreServer/TcpSession.cs b/source/NetCoreServer/TcpSession.cs
index c315403..d4344e3 100644
--- a/source/NetCoreServer/TcpSession.cs
+++ b/source/NetCoreServer/TcpSession.cs
@@ -397,7 +397,7 @@ public virtual string Receive(long size)
         public virtual void ReceiveAsync()
         {
             // Try to receive datagram
-            if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+            if (Thread.CurrentThread.ManagedThreadId == _receiveThreadId)
                 ThreadPool.QueueUserWorkItem(_ => TryReceive());
             else
                 TryReceive();
@@ -526,6 +526,7 @@ private void ProcessReceive(SocketAsyncEventArgs e)
             if (!IsConnected)
                 return;
 
+            bool recursive = (Thread.CurrentThread.ManagedThreadId == _receiveThreadId);
             long size = e.BytesTransferred;
 
             // Received some data from the client
@@ -552,7 +553,7 @@ private void ProcessReceive(SocketAsyncEventArgs e)
                 // If zero is returned from a read operation, the remote end has closed the connection
                 if (size > 0)
                 {
-                    if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+                    if (recursive)
                         ThreadPool.QueueUserWorkItem(_ => TryReceive());
                     else
                         TryReceive();
@@ -577,6 +578,7 @@ private void ProcessSend(SocketAsyncEventArgs e)
             if (!IsConnected)
                 return;
 
+            bool recursive = (Thread.CurrentThread.ManagedThreadId == _sendThreadId);
             long size = e.BytesTransferred;
 
             // Send some data to the client
@@ -608,7 +610,7 @@ private void ProcessSend(SocketAsyncEventArgs e)
             // Try to send again if the session is valid
             if (e.SocketError == SocketError.Success)
             {
-                if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+                if (recursive)
                     ThreadPool.QueueUserWorkItem(_ => TrySend());
                 else
                     TrySend();
diff --git a/source/NetCoreServer/UdpClient.cs b/source/NetCoreServer/UdpClient.cs
index fa5d062..4f4159a 100644
--- a/source/NetCoreServer/UdpClient.cs
+++ b/source/NetCoreServer/UdpClient.cs
@@ -551,7 +551,7 @@ public virtual string Receive(ref EndPoint endpoint, long size)
         public virtual void ReceiveAsync()
         {
             // Try to receive datagram
-            if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+            if (Thread.CurrentThread.ManagedThreadId == _receiveThreadId)
                 ThreadPool.QueueUserWorkItem(_ => TryReceive());
             else
                 TryReceive();
diff --git a/source/NetCoreServer/UdpServer.cs b/source/NetCoreServer/UdpServer.cs
index 9962cbb..4ef0a02 100644
--- a/source/NetCoreServer/UdpServer.cs
+++ b/source/NetCoreServer/UdpServer.cs
@@ -544,7 +544,7 @@ public virtual string Receive(ref EndPoint endpoint, long size)
         public virtual void ReceiveAsync()
         {
             // Try to receive datagram
-            if (Thread.CurrentThread.ManagedThreadId == _sendThreadId)
+            if (Thread.CurrentThread.ManagedThreadId == _receiveThreadId)
                 ThreadPool.QueueUserWorkItem(_ => TryReceive());
             else
                 TryReceive();