[This is preliminary documentation and subject to change]
Most Web browsers ask the server to keep the connection open across multiple requests. This is referred to as HTTP Keep-Alives. Keep-Alive is an HTTP specification that allows for greatly enhanced server performance. Without it, a browser has to make numerous connection requests for a page containing multiple elements, such as graphics. A separate connection may need to be made for each element. These additional requests and connections require additional server activity and resources, decreasing server efficiency. They also make a browser much slower and less responsive, especially across a high-latency (slow) connection. HTTP Keep-Alives are enabled by default during the installation process.
To disable HTTP Keep-Alives