Quick Answer: How HTTP Protocol Works Step By Step?

How HTTP works step by step?

The web browser connects to the web server and sends an HTTP request (via the protocol stack) for the desired web page.

The web server receives the request and checks for the desired page.

If the page exists, the web server sends it.

If the server cannot find the requested page, it will send an HTTP 404 error message..

How does HTTP get work?

HTTP is the protocol that is used by web servers and browsers to communicate. HTTP is based on a request and a response. When the you type in a webpage URL in the browser and hit Enter, the browser makes an HTTP GET request. … Next, the webpage being requested is “/home”.

What is the purpose of HTTP protocol?

As a request-response protocol, HTTP gives users a way to interact with web resources such as HTML files by transmitting hypertext messages between clients and servers. HTTP clients generally use Transmission Control Protocol (TCP) connections to communicate with servers.

What are different kinds of HTTP requests?

The GET MethodGET is used to request data from a specified resource.GET is one of the most common HTTP methods.POST is used to send data to a server to create/update a resource.POST is one of the most common HTTP methods.PUT is used to send data to a server to create/update a resource.More items…

Is TCP stateless or stateful?

In contrast, a protocol that requires keeping of the internal state on the server is known as a stateful protocol. A TCP connection-oriented session is a stateful connection because both systems maintain information about the session itself during its life.


HTTP uses TCP instead of UDP because it guarantees delivery via a three-way handshake and re-transmission of lost packets.

How a HTTP request looks like?

An HTTP client sends an HTTP request to a server in the form of a request message which includes following format: A Request-line. Zero or more header (General|Request|Entity) fields followed by CRLF. An empty line (i.e., a line with nothing preceding the CRLF) indicating the end of the header fields.

What is HTTP GET and POST?

In computing, POST is a request method supported by HTTP used by the World Wide Web. By design, the POST request method requests that a web server accepts the data enclosed in the body of the request message, most likely for storing it. … In contrast, the HTTP GET request method retrieves information from the server.

Why Microservices are stateless?

We could say a microservice is stateless if it does not hold information in its internal storage that is critical to serving clients, instead it holds data in external stores (which can be stateful). A good thought experiment is to imagine that your service restarts on a different node between each and every request.

What is HTTP protocol and how it works?

HTTP is a protocol which allows the fetching of resources, such as HTML documents. It is the foundation of any data exchange on the Web and it is a client-server protocol, which means requests are initiated by the recipient, usually the Web browser.

What protocol does HTTP use?

TCP/IPBasically, HTTP is a TCP/IP based communication protocol, that is used to deliver data (HTML files, image files, query results, etc.) on the World Wide Web. The default port is TCP 80, but other ports can be used as well. It provides a standardized way for computers to communicate with each other.

What are the three parts of an HTTP request?

2.2. Request. An HTTP request has three parts: the request line, the headers, and the body of the request (normally used to pass form parameters). … 2.2. Response. The server’s response also has three parts: the status line, some headers, and an optional body.

What is HTTP PUT?

The HTTP PUT request method creates a new resource or replaces a representation of the target resource with the request payload.

What is difference between GET and POST?

Both GET and POST method is used to transfer data from client to server in HTTP protocol but Main difference between POST and GET method is that GET carries request parameter appended in URL string while POST carries request parameter in message body which makes it more secure way of transferring data from client to …

Is HTTP 1.1 stateless?

HTTP is called as a stateless protocol because each request is executed independently, without any knowledge of the requests that were executed before it, which means once the transaction ends the connection between the browser and the server is also lost.

What is HTTP and its purpose?

The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World-Wide Web global information initiative since 1990.

What is diff between http and https protocol?

HTTPS is HTTP with encryption. The only difference between the two protocols is that HTTPS uses TLS (SSL) to encrypt normal HTTP requests and responses. As a result, HTTPS is far more secure than HTTP. A website that uses HTTP has http:// in its URL, while a website that uses HTTPS has https://.

Is HTTP stateful or stateless?

HTTP is a stateless protocol, in other word the server will forget everything related to client/browser state. Although web applications have made it virtually look like stateful. A stateless protocol can be forced to behave as if it were stateful.

What are different HTTP methods?

The primary or most-commonly-used HTTP verbs (or methods, as they are properly called) are POST, GET, PUT, PATCH, and DELETE. These correspond to create, read, update, and delete (or CRUD) operations, respectively. There are a number of other verbs, too, but are utilized less frequently.

Is 80 UDP or TCP?

Port 80 DetailsPort(s)ProtocolService80tcp,udpapplications22,57,80,3660,3663,4665tcp,udpapplications80,443tcpapplications80, 4711, 18060, 28910, 29900, 29901, 29920tcpapplications71 more rows