Socket Programming: TCP, UDP, and Network Communication Protocols

What is socket programming?

A method for networked applications to communicate using client and server programs that read from and write to sockets.

What is the role of sockets in networked applications?

Sockets facilitate communication between client and server programs running on different hosts.

What is the difference between open and proprietary applications in socket programming?

Open applications use published standards (like RFCs) for communication, while proprietary applications do not disclose their protocols.

What protocol do web browsers and web servers implement?

HTTP (Hypertext Transfer Protocol)

What is UDP in socket programming?

User Datagram Protocol, a connectionless protocol that allows data to be sent without establishing a connection.

What does the UDP client do in the provided example?

Reads a line of characters from the keyboard, sends it to the server, and displays the modified response.

What does the UDP server do in the provided example?

Receives data from the client, converts it to uppercase, and sends it back to the client.

What is the main difference between UDP and TCP socket programming?

TCP requires a handshake and connection establishment, while UDP does not.

What is the purpose of the TCP client in the provided example?

To connect to the server, send a lowercase sentence, and receive the modified uppercase sentence.

What does the TCP server do in the provided example?

Binds to a port, listens for connections, receives data, converts it to uppercase, and sends it back.

What is the significance of the server port number in socket programming?

It identifies the specific service or application on the server that the client wants to communicate with.

What is the function of the 'bind' method in socket programming?

It associates a socket with a specific port and IP address for listening to incoming connections.

What does the 'listen' method do in TCP socket programming?

It enables a server to accept incoming connection requests.

What is the purpose of the 'accept' method in TCP socket programming?

It waits for and accepts an incoming connection from a client.

What is the maximum size of data that can be received in the UDP example?

2048 bytes.

What is the maximum size of data that can be received in the TCP example?

1024 bytes.

What is the significance of the 'sendto' method in UDP socket programming?

It sends data to a specified address and port without establishing a connection.

What does the 'send' method do in TCP socket programming?

It sends data to the connected client after establishing a connection.