Description: Most programmers have access to a socket (Socket) into two categories: (1) stream socket (SOCK_STREAM): a connection-oriented Socket, for applications in service-oriented TCP connections (2) Data News sockets (SOCK_DGRAM): a connectionless socket, corresponding to the UDP connectionless service applications. From the user s perspective, SOCK_STREAM, SOCK_DGRAM socket these two seem really covers all the TCP/IP applications, because TCP/IP-based application-level protocol stack speaking at the transport layer is indeed possible to build only on top of TCP or UDP protocol (Figure 1), and SOCK_STREAM, SOCK_DGRAM also correspond to the TCP and UDP, so almost all of the applications can be used to achieve these two sockets.
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Raw_sockets_dialysis.pdf
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