Module 21 - Accessing the Network and Parallel Programming

port

16 bit integer that identifies a process

socket

an endpoint of a connection

getaddrinfo()

uses the query key as a DNS domain name, and returns desired protocol information

getnameinfo()

query key is an IP address, returns a sockaddr struct

bind()

associates the socket descriptor witht he socket addrewss

listen()

indicates that this socket will accept conection requests from clients

accept()

blocks waiting for a connection request

listening descriptor

end point for client connection requests that is created once and exists for the lifetime of the server

connected descriptor

end point of the connection between client and server, exists only as long as it takes to service the client