What layer of object-oriented protocol is http?

http is an object-oriented layer protocol

http is an object-oriented application layer protocol.

We all know that a protocol is an agreement. We specify a format of information. If the sender sends information according to this request format, then the receiving end must parse the data according to this format. That's the deal.

The application layer protocol includes, on the one hand, the information that the client and server need to interact with, and on the other hand, how to organize (serialization) and how to parse the information (deserialization).

HTTP protocol is a customized and very easy-to-use application layer protocol. We can use this protocol directly instead of spending time and effort to customize an uneasy protocol, which saves a lot of things.

The main features of the http protocol:

● Supports C/S (client/server) mode

● Simple and fast: the client requests services from the server , just pass the request method and path. Commonly used request methods include GET, HEAD, and POST. Each method specifies a different type of contact between the client and the server. Due to the simplicity of the HTTP protocol, the program size of the HTTP server is small and the communication speed is very fast.

● Flexible: HTTP allows the transmission of any type of data object. The type being transferred is marked by Content-Type.

● No connection: The meaning of no connection is to limit each connection to only process one request. After the server processes the client's request and receives the client's response, it disconnects. This method saves transmission time.

● Stateless: The HTTP protocol is a stateless protocol. Stateless means that the protocol has no memory for transaction processing. The lack of status means that if subsequent processing requires the previous information, it must be retransmitted, which may result in an increase in the amount of data transferred per connection; on the other hand, the server responds faster when it does not need the previous information.

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