A communication device and method of operating the same. The method may include initiating a first connection between a client device and a proxy server application and a second connection between the proxy server application and the remote server while advertising a proxy-window-scale-value, and splicing the TCP connections below a transport layer. The method also includes left shifting a window size of a client-sourced-packet to obtain an originally intended client-window size, right shifting the originally intended client-window size by the proxy-window-scale-value, and providing the client-sourced-packet to the server with the proxy-window scaled value. In addition, the method includes receiving a server-sourced-packet from the remote server, left shifting a window size of the server-sourced-packet by the server-window-scale value to obtain an originally intended server-window size, right shifting the originally intended server-window size by the proxy-window-scale-value, and then providing the server-sourced-packet to the client with the proxy-window scaled value.