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4.1.1 TCP Reliable Data Pipes HTTP connections really are nothing more than TCP connections, plus a few rules about how to use them. TCP connections are the reliable connections of the Internet. To... 阅读全文
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摘要：
4.1.1 TCP Reliable Data Pipes HTTP connections really are nothing more than TCP connections, plus a few rules about how to use them. TCP connections are the reliable connections of the Internet. To... 阅读全文
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· How HTTP uses TCP connections · Delays, bottlenecks and clogs in TCP connections · HTTP optimizations, including parallel, keep-alive, and pipelined connections · Dos and don'ts for managing con... 阅读全文
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3.3 Methods 3.4 Status Codes 3.5 Headers Headers and methods work together to determine what clients and servers do. This section quickly sketches the purposes of the standard HTTP headers and some... 阅读全文
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HTTP messages are simple, formatted blocks of data. Take a peek at Figure 3-3 for an example. Each message contains either a request from a client or a response from a server. They consist of three pa... 阅读全文
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HTTP messages are the blocks of data sent between HTTP applications. These blocks of data begin with some text meta-information describing the message contents and meaning, followed by optional data. ... 阅读全文
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· How messages flow · The three parts of HTTP messages (start line, headers, and entity body) · The differences between request and response messages · The various functions (methods) that request... 阅读全文
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http The Hypertext Transfer Protocol scheme conforms to the general URL format, except that there is no username or password. The port defaults to 80 if omitted. Basic form: http://<host>:<port>/<... 阅读全文
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URLs were designed to be portable. They were also designed to uniformly name all the resources on the Internet, which means that they will be transmitted through various protocols. Because all of thes... 阅读全文
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Web clients understand and use a few URL shortcuts. Relative URLs are a convenient shorthand for specifying a resource within a resource. Many browsers also support "automatic expansion" of URLs, wher... 阅读全文
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2.2 URL Syntax URLs provide a means of locating any resource on the Internet, but these resources can be accessed by different schemes (e.g., HTTP, FTP, SMTP), and URL syntax varies from scheme to sc... 阅读全文
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2.1 Navigating the Internet's Resources URLs are the resource locations that your browser needs to find information. They let people and applications find, use, and share the billions of data resourc... 阅读全文
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In this overview chapter, we've focused on how two web applications (web browsers and web servers) send messages back and forth to implement basic transactions. There are many other web applications t... 阅读全文
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There are several versions of the HTTP protocol in use today. HTTP applications need to work hard to robustly handle different variations of the HTTP protocol. The versions in use are: HTTP/0.9 The... 阅读全文
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1.6.1 TCP/IP HTTP is an application layer protocol. HTTP doesn't worry about the nitty-gritty details of network communication; instead, it leaves the details of networking to TCP/IP, the popular rel... 阅读全文
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HTTP messages are simple, line-oriented sequences of characters. Because they are plain text, not binary, they are easy for humans to read and write. HTTP messages sent from web clients to web server... 阅读全文
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1.4.1 Methods HTTP supports several different request commands, called HTTP methods. Every HTTP request message has a method. The method tells the server what action to perform (fetch a web page, run... 阅读全文
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