HTTP Connection is being closed by EAP when sending requests with large body

Issue

After upgrade to JBoss Enterprise Application Platform (EAP) 6.4.7+, we observe the issue that when sending requests with large body (>2MB), connections are closed by EAP unexpectedly.

Here is the error we get from .Net client side:

"2016-07-22 16:40:06:30","Error","AdaptorBase:ExecuteImpl()","Exception occured: System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.MultipleSend(BufferOffsetSize[] buffers, SocketFlags socketFlags) at ......

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