• Table of Contents

Creating a Socket (socket)

Creates a socket for network communication.

int socket(int domain, int type, int protocol);

Parameters:

• domain: Specifies the address family, such as AF_INET (IPv4) or AF_INET6 (IPv6).
• type: Defines the socket type, like SOCK_STREAM (TCP) or SOCK_DGRAM (UDP).
• protocol: Indicates the specific protocol to use, often set to 0 for the default protocol.

Return Value:

• Returns a socket descriptor (an integer) if the socket creation is successful.
• Returns -1 on error, and you can check errno for the specific error condition.

Binding a Socket to an Address (bind)

Associates a socket with a specific local address.

int bind(int sockfd, struct sockaddr *my_addr, int addrlen);

Parameters:

• sockfd: The socket descriptor returned by socket.
• sockaddr: A pointer to a struct sockaddr containing the local address information.
• addrlen: The length of the sockaddr structure.

Return Value: