Fixed memory leak

source/log4net-loggly.UnitTests/LogglyAsyncBufferTest.cs

@@ -239,6 +239,42 @@ public void SentBulkIsLimitedByMaxBulkSize()
             }, "correct messages should be sent");
         }
 
+        [Fact]
+        public void NextBulkSizeLimitationStartsFromZero()
+        {
+            // message of 10 bytes, buffer for 10 messages = 100 bytes
+            // max bulk size se to 30 -> bulk size should be limited by this number
+            _config.MaxBulkSizeBytes = 30;
+            _config.BufferSize = 10;
+            var oneMessageSize = 10;
+            var oneMessage = new String('x', oneMessageSize);
+
+            ExpectSends(3);
+
+            var buffer = new LogglyAsyncBuffer(_config, _clientMock.Object);
+
+            // +7 messages so that 3 bulks by 3 messages are sent before number of messages goes below buffer size
+            for (int i = 0; i < _config.BufferSize + 7; i++)
+            {
+                buffer.BufferForSend(oneMessage);
+            }
+
+            _allSentEvent.Wait(MaxWaitTime).Should().BeTrue("messages should be sent");
+
+            _sentMessages.Should().BeEquivalentTo(new[]
+            {
+                oneMessage,
+                oneMessage,
+                oneMessage,
+                oneMessage,
+                oneMessage,
+                oneMessage,
+                oneMessage,
+                oneMessage,
+                oneMessage,
+            }, "correct messages should be sent");
+        }
+
         private void ExpectSends(int numberOfSends)
         {
             _allSentEvent = new CountdownEvent(numberOfSends);

source/log4net-loggly/LogglyAsyncBuffer.cs

@@ -79,7 +79,6 @@ private void DoSend()
             var handles = new WaitHandle[] { _stopEvent, _readyToSendEvent, _flushingEvent };
 
             int triggeredBy;
-            int bulkSize = 0;
             while ((triggeredBy = WaitHandle.WaitAny(handles, _config.SendInterval)) != 0)
             {
                 // allow sending partial buffer only when it was triggered by timeout or flush
@@ -91,6 +90,7 @@ private void DoSend()
 
                 _sendInProgress = true;
                 int sendBufferIndex = 0;
+                int bulkSize = 0;
                 while (sendBufferIndex < sendBuffer.Length 
                     && _messages.TryPeek(out var message)
                     && bulkSize + message.Length <= _config.MaxBulkSizeBytes)