Research Of UNIX Communication Mechanism And CNAPS Interface System

UNIX is the leading operation system which is used a great deal , and it also have deep effect on us. UNIX has high reliability, stability, security. In our country, the majority of key operations are run on UNIX , so UNIX have high correlation with our daily life. In addition to, with the development of computer technique and communications technique, computer network become more and more popular, communications is needed between different machines in a network, so the research of UNIX communications mechanism in this article has some significant meanings.Above all, the article introduces the mechanism of IPC(Interprocess Communication), and make a thorough research of IPC in a host and IPC across network. Then the article analyses the design methods of server in C/S pattern, involving the arithmetic design and process structure of different server. Based the foregoing discussion of UNIX communications mechanism, the paper introduces CNAPS interface system as a example, and researchs the application layer protocol of CNAPS interface system , including the format of application layer , the compression and decompression of text, the reason and principle of serial number. Then it puts forward the communications flow between interface system and CNAPS . Finally it puts forward the flow charts of serial numberbetween Interface System and CNAPS .