Always decrement count on HTTP/2 stream completion (#3087)

#3079
2018-11-09 12:40:51 -08:00 · 2018-11-09 12:40:51 -08:00 · 5db6394769
parent 4d2e68649f
commit 5db6394769
1 changed files with 2 additions and 2 deletions
--- a/src/Kestrel.Core/Internal/Http2/Http2Connection.cs
+++ b/src/Kestrel.Core/Internal/Http2/Http2Connection.cs
@ -1045,11 +1045,11 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
        {
            lock (_stateLock)
            {
+                _activeStreamCount--;
+
                // Get, Add, Remove so the steam is always registered in at least one collection at a time.
                if (_streams.TryGetValue(streamId, out var stream))
                {
-                    _activeStreamCount--;
-
                    if (stream.IsDraining)
                    {
                        stream.DrainExpiration =