"Linux Advanced Programming" (13th) Linux Socket Network Programming Fundamentals 2

BSD Socket Network Programming API creates socket object

int socket (int __domain, int __type, int __protocol) : Successfully returns the socket file descriptor, failure returns-1.

Parameter 1:socket the address cluster or protocol family used by the object

Commonly used are pf_local (native communication), Pf_inet (IPV4 protocol cluster), PF_INET6 (IPV6 protocol cluster)

The type of the parameter 2:socket. Common: connection-oriented data flow mode; Non-connected datagram mode

Parameter 3: Identifies which protocol to use, and 0 indicates default.

Bind the IP address to the port

int bind (int __fd, __const_sockaddr_arg __addr, socklen_t __len) : Successfully returned 0, failed return-1

Parameter 1: File descriptor for binding to the ground IP

Parameter 2: Pointer to SOCKADDR structure, identifying local address information

"Linux Advanced Programming" (13th) Linux Socket Network Programming Fundamentals 2