Download Linux socket programming by Sean Walton PDF

By Sean Walton

Linux Socket Programming provides a accomplished dialogue of all correct themes together with: writing courses suitable with either net Protocol model four (IPv4) and IPv6, uncooked sockets, person Datagram Protocol (UDP), broadcasting /multicasting, server internals, and extra, plus a piece overlaying Posix threads.It offers thorough assurance of programming with the TCP, UDP, and IP protocols, in addition to lower-level uncooked sockets. The myriad of functionality calls, facts buildings, and concepts linked to the APIs are defined with well-chosen diagrams and tables.

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Each logical network offers varying degrees of features and interfaces (protocols). All packet types and protocols are available with network programming. Each type has significant strengths and weaknesses. Like shopping for tools, your choice of packet type depends on how you use it. 1). This chapter describes each type and presents their advantages, disadvantages, and typical uses. 1. The Sockets API provides different levels of reliable messages. The Fundamental Network Packet If you could actually see the bits that travel from one computer to the other, what would you see?

The IP subsystem keeps track of the IDs. You must use caution (and extra programming) to reduce the likelihood of selecting an ID that the subsystem recently used or may use. dont_frag, more_frags, frag_offset Flags and Field These flags manage how (or if) your packet fragments. If while traversing the network a lengthy packet has to go through a constricted network segment (one that cannot support the frame size), the router may try to break up the packet into smaller pieces (fragmentation). A fragmented packet remains fragmented until it arrives at the destination.

6. TCP Attributes (unlimited) 40–120 High (data receipt checked) Stream Low (compared to other protocols) High (includes checksums) Unlikely Taking reliability one step further requires ensuring that the destination gets the exact message the originator sent. UDP has the speed but does not have the reliability that many programs require. TCP solves the reliability problem. The network, however, has several fundamental problems that make it unreliable. These problems are not limitations. Instead, they are inherent in the design of the network.

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