What Are the Steps in a Web Application Roundtrip?
Using the concepts from the preceding overview of how HTTP works, we can now examine the steps an application goes through in a request-response communication roundtrip, as shown in Figure 2-2. This discussion assumes that the host computer domain has been assigned a domain name on the client computer or on a server, as described in the sidebar “About Domain Name System and Domains.” It also assumes that the HTTP request is sent through the Internet instead of being handled by the client or a local network.
FIGURE 2-2. HTTP request-response roundtrip
About Domain Name System and Domains
HTTP ...
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