What are the basics of socket programming in C++?

What are the basics of socket programming in C++?

Socket programming in C++ involves using the socket API to enable communication between devices over a network. It includes creating sockets, binding them to addresses, listening for connections, and sending/receiving data.

Can you explain how to create a socket in C++?

To create a socket in C++, you typically use the socket() function, specifying the address family (like AF_INET for IPv4), socket type (like SOCK_STREAM for TCP), and protocol (usually 0 for default). For example: int sockfd = socket(AF_INET, SOCK_STREAM, 0);.

What is the difference between TCP and UDP sockets?

TCP sockets provide a reliable, connection-oriented communication, ensuring data is delivered in order. UDP sockets, on the other hand, are connectionless and do not guarantee delivery or order, making them faster but less reliable.

How do I send data over a socket?

To send data over a socket, you can use the send() function. You'll need to specify the socket file descriptor, the data buffer, the size of the data, and any flags. For example: send(sockfd, buffer, sizeof(buffer), 0);.