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Introduction to SocketsOutlineIP, ICMP, UDP, TCP header format, servers, byte ordering, socket file descriptors, POSIX data types and functions, useful tools对应教材：Chapters 1,2 and 3IP Protocol Suite (IP协议族)Internet Protocol(IP协议)Two versions, ipv4 an

Network Layer_Internet Protocol_Basics and RoutingOutlineFundamentalsHostAddressingRouterRoutingFundamentalsThe IP Protocol is just one example of Network ProtocolEach layer should be independent.Modular by DesignSimplifies Architecture and

Introduction to Computer Network ProgrammingPurposeGoalsLecturesIP Basics & RoutingSocketsUDP SocketsTCP SocketsHTTPSSL/TLS and HTTPsBasic Network CryptographyI/O Models & DNSClient & Server Design Alternatives