Introduction Continues the discussion of middleware (i.e., tools and libraries programmers used to construct client-server software) Y Introduces the remote procedure call (RPC) concept, and describes a particular implementation of an rpc that uses XDr standard for data representation
How applications become clients by initiating communication How applications use TCP or UDP protocols to contact a server How they use socket calls to interact with the protocols CSIE, NTUT, Taiwan
Conceptual interface specification Implementation of an API The TCP/IP standards do not leave All implementations of a particular API appear the ithout any guidance. or functions)that ar
交换是指从他人处取得所需之物,而 以其某种东西作为回报的行为。 Exchange is the act of obtaining a desired product from someone by offering something in return. 交易(Transactions)—交易是交换活动的 基本单元,是由双方之间的价值交换所构 成的行为