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Explain that Chrome requests to the web server should be made in Inco… #3753

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Explain that Chrome requests to the web server should be made in Inco… #3753

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7 changes: 7 additions & 0 deletions src/ch20-01-single-threaded.md
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Expand Up @@ -106,6 +106,13 @@ reason might be that the browser is making a request for the page as well as a
request for other resources, like the *favicon.ico* icon that appears in the
browser tab.

Another reason might be that the browser is opening multiple connections to the
server in anticipation of future requests. By opening connections early, the
browser begins connection setup tasks ahead of time. Once the connection is
established, the next request to the server can be sent without delay. Disable
this optimization in Chrome by using Incognito mode, or else it could make the
server panic in later sections.

It could also be that the browser is trying to connect to the server multiple
times because the server isn’t responding with any data. When `stream` goes out
of scope and is dropped at the end of the loop, the connection is closed as
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