Tell Me The Overall Operation Of HTTP Protocol?

The HTTP procedure is apply for/response protocol. A client sends a apply for to the member of staff serving at table in the form of a request process, URI, and code of behaviour version, followed by a MIME-like message containing demand modifiers, client in sequence, and possible body substance over a association with a server. The member of staff serving at table responds with a position line, including the message's procedure edition and a success or error policy, followed by a MIME-like communication containing server information, entity Meta information, and doable entity-body substance. The association between HTTP and MIME is the basic operation of network.
Most HTTP statement is initiated by a consumer agent and consists of ask for to be applied to a reserve on some origin head waiter. In the simplest case, this may be talented via a solitary connection (v) flanked by the user agent (UA) and the source server (O).
          Request chain ------------------------>
       UA -------------------v------------------- O
          <----------------------- response chain
A more complex situation occurs when one or more disinterested party is in attendance in the call for/response chain. There are three familiar forms of liaison: proxy, gateway, and tunnel.