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Open C Sockets: socket method
The socket method creates an endpoint for communication.
int socket (int domain, int type, int protocol);
The socket system call creates an endpoint for communication and returns a descriptor.
The domain argument specifies a communications domain within which communication will take place; this selects the protocol family which should be used. These families are defined in the include file sys/socket.h. The protocol argument specifies a particular protocol to be used with the socket.
Following code snippet shows the usage of socket function:
sock_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);