The GET request we just sent does not contain a message body nor a Content-Length header because. Use the following diagram to review the Request Headers sent to the server when browsing to generalassemb.ly: In the pane on the right you will find all of the information about a particular HTTP request. Wow! Each one of those lines represents a separate HTTP request made to a server! Find the line in the left-side pane with generalassemb.ly and click on it: Now let's browse to General Assembly's site by typing generalassemb.ly in the address bar. Let's open a new tab in Chrome, open DevTools, and click on the Network tab where we can inspect HTTP requests and responses. However, it is possible to remember "state" using cookies or by sending data in the request's body (data payload). HTTP itself does not maintain any information regarding previous requests between client and server - this makes HTTP a stateless protocol. When the response is received by the client, that request/response cycle has ended and there will be no further HTTP communications unless another request is sent by the client. When we browse to a website by typing in the address bar, this is what happens: The process of a client sending a HTTP request, and server responding is known as the HTTP Request/Response Cycle: When a user interacts with an amazing web application we developed, it's HTTP that informs the web application what the browser wants and it's HTTP that delivers the goods from the server back to the browser. HTTP is fundamental to web development - regardless of which back-end or front-end web technology/framework is used. Hypertext Transfer Protocol (HTTP) is an application-level network protocol that powers the communications across the World Wide Web, more commonly referred to as just the Web. The PostgreSQL & MongoDB database servers will also be running on your computer, however, we will move to a cloud-based MongoDB server as soon as it's practical. Note that during development, your computer will plays the role of BOTH client and web server. Web developers usually think of a "web browser" when they hear "client". Physical servers connected to the Internet are also referred to as hosts.
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