How would you establish a connection between client and server?

To communicate, client and server programs must establish a communication session across the network or networks that connect them. Once they establish the connection, the client can call remote procedures in the server program as if they were local to the client program.

Which type connection is the one where each TCP connection is closed after server send the object?

Therefore, HTTP is called a stateless protocol. HTTP can use both nonpersistent connections and persistent connections. A nonpersistent connection is the one that is closed after the server sends the requested object to the client. In other words, the connection is used exactly for one request and one response.

Can the client the server or both signal the close of a connection?

A client, server or both can send the close of connection signal. If the client or server wishes to close the connection, it can send the connection header field with Connection token close.

How does a server accept a connection?

A server (program) runs on a specific computer and has a socket that is bound to a specific port. The server waits and listens to the socket for a client to make a connection request. If everything goes well, the server accepts the connection. Upon acceptance, the server gets a new socket bound to a different port.

What are the basic operations should a client take to send and receive data between server?

The basic operations area is as follows:

Connect to remote host.
Send and receive data.
Close a connection.
Bind to a port.
Listen to incoming data.
Accept remote connections on the bounded port.

Is HTTP 1.1 still used?

HTTP stands for hypertext transfer protocol, and it is the basis for almost all web applications. Because it went through several stages of development, this first version of HTTP was called HTTP/1.1. This version is still in use on the web. In 2015, a new version of HTTP called HTTP/2 was created.

How many TCP connections can a server handle?

On the TCP level the tuple (source ip, source port, destination ip, destination port) must be unique for each simultaneous connection. That means a single client cannot open more than 65535 simultaneous connections to a single server. But a server can (theoretically) serve 65535 simultaneous connections per client.

Why is the browser type needed in an HTTP request message?

The browser type information is needed by the server to send different versions of the same object to different types of browsers.

What is persistent and non persistent connection in HTTP?

Non-Persistent Connection: It requires connection setup again and again for each object to send. Persistent connection: It does not require connection setup again and again. Multiple objects can use connection.

Which method is used by the server to wait for a client connection?

accept() method
The server invokes the accept() method of the ServerSocket class. This method waits until a client connects to the server on the given port. After the server is waiting, a client instantiates a Socket object, specifying the server name and the port number to connect to.

How are multiple client connections made to single client?

1. How does server communicate with these two clients simultaneously after the connection has been established? Now practically not only 2 clients but thousands and millions user may connect to a server. 2.

Can a server handle more than one client at a time?

In the basic model, server handles only one client at a time, which is a big assumption if you want to develop any scalable server model. The simple way to handle multiple clients would be to spawn new thread for every new client connected to the server. This method is strongly not recommended because of various disadvantages, namely:

How to run a server as a client?

Compile the file and run the server. Use telnet to connect the server as a client. We have created a fd_set variable readfds, which will monitor all the active file descriptors of the clients plus that of the main server listening socket. Whenever a new client will connect, master_socket will be activated and a new fd will be open for that client.

Which is the best way to handle multiple clients?

The existing problems discussed in the previous section suggest that multithreading is the best solution: To handle multiple clients, we can create a thread for each incoming client call, and this thread will handle the communication between the server and this particular client.

How would you establish a connection between client and server?