what the relationship between http and html? | Yahoo Answers
Know the Difference between HTTP and HTTPS. Learn how HTTP Work and how they are different with our HTTPS tutorial. The Hypertext Transfer Protocol (HTTP) is an application-level protocol for . The relationship between HTTP and MIME is described in appendix HTML began as a very simple language for creating web pages. XHTML arose when web development expanded and professional programmers needed.
An entity consists of metainformation in the form of entity-header fields and content in the form of an entity-body, as described in section 7.
HTTP - HyperText Transfer Protocol
There may exist multiple representations associated with a particular response status. The representation of entities in any response can be negotiated including error responses. These are often browsers, editors, spiders web-traversing robotsor other end user tools. Any given program may be capable of being both a client and a server; our use of these terms refers only to the role being performed by the program for a particular connection, rather than to the program's capabilities in general.
Likewise, any server may act as an origin server, proxy, gateway, or tunnel, switching behavior based on the nature of each request.
What is HTTP - HyperText Transfer Protocol? Webopedia Definition
Requests are serviced internally or by passing them on, with possible translation, to other servers. A proxy MUST implement both the client and server requirements of this specification. A "transparent proxy" is a proxy that does not modify the request or response beyond what is required for proxy authentication and identification. A "non-transparent proxy" is a proxy that modifies the request or response in order to provide some added service to the user agent, such as group annotation services, media type transformation, protocol reduction, or anonymity filtering.
Except where either transparent or non-transparent behavior is explicitly stated, the HTTP proxy requirements apply to both types of proxies.
Unlike a proxy, a gateway receives requests as if it were the origin server for the requested resource; the requesting client may not be aware that it is communicating with a gateway. The tunnel ceases to exist when both ends of the relayed connections are closed.
A cache stores cacheable responses in order to reduce the response time and network bandwidth consumption on future, equivalent requests. Any client or server may include a cache, though a cache cannot be used by a server that is acting as a tunnel. The rules for determining the cacheability of HTTP responses are defined in section Even if a resource is cacheable, there may be additional constraints on whether a cache can use the cached copy for a particular request.
A response is also first-hand if its validity has just been checked directly with the origin server.
When a cache is semantically transparent, the client receives exactly the same response except for hop-by-hop headers that it would have received had its request been handled directly by the origin server.
A client sends a request to the server in the form of a request method, URI, and protocol version, followed by a MIME-like message containing request modifiers, client information, and possible body content over a connection with a server. The server responds with a status line, including the message's protocol version and a success or error code, followed by a MIME-like message containing server information, entity metainformation, and possible entity-body content.
It does this by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items.
What the relationship between http and html?
Basically, it works as means of telling where the data on the World Wide Web travels from and where to. It allows computers to pass information in an orderly fashion. HTTP is the protocol to exchange or transfer hypertext. Hypertext is a multi-linear set of objects that are used to build a network by using hyperlinks between the nodes, such as text or words.
- Difference between HTML and HTTP
HTTP also defines how messages are formatted and transmitted, in addition to what actions Web servers and browsers should take in response to various commands. It is called a stateless protocol because each command is executed independently and without any knowledge of previous commands.
This command would be executed irrespective of any other websites or URLs viewed. A disadvantage of HTTP is that it is difficult to implement Web sites that react intelligently to user input. This is mainly due to the independent execution of the commands.