Polling is a manager, keep inquiring if someone wants to send, if someone wants to send, others listen, only one person can send each time,
The token is a person who will receive the token to send data. The local area network is the TCP / IP of the LAN includes the physical layer, the network layer, the transport layer, the first half of the IP address, and the second half. Part of the host address A class address in the network is the largest, the Class C address minimum gateway is the unified exit router must have more than two IP addresses, and the two addresses must cross the two parts of the IP address to view routers. Table Each UNIX system is a router getServeByName () that is implied to call the NTOHS () function, transforming the network word sequence to the host word sequence UDP transceiver using Sendto, the Recvfrom function has selective communication, you can use Shutdown Read or write or turn off the binding to connect ports and processes, and the client RECVFROM is temporary binding of ports through Sendto, and the server side is sendTO when sending is temporary binding through the RecVfrom port. The IP layer that is processed only includes the source address, and the destination address TCP / UDP programming is a programming of the point-to-point, and the IP layer programming can intercept the UDP or TCP packet received by other data systems will not be intercepted by the IP layer, which will be sent directly To the TCP, UDP interface, only the data link layer can take the address path of the TTL to look up the route to the route on the jumper window is the tracert command can be found. Chown root: bin a.out uses SMTP UDP to test how many Routing then achieves
Vc_socket: wsastartupwsagetlasterror (void); CloseSocket (); WSACLEANUP (VOID);
CSocket is used to encapsulate some connect, Accept API functions, and CSocketFile is the relevant stream operation FCNTL (0, f_setfl, o_nonblock); set non-blocking FCNTL (SD, F_SETFL, O_NONBLOCK);
SO_BROADCAST Set UDP Broadcast NMS belongs to the application layer EMS device management system C3i
More famous management system: Tovoli
OpenView
Portal
Veritas
{How to determine the read and write has been completed: When the clog is closed by the other party, it is judged by the other party, and the READ returns 0, and non-blocking can be determined according to the received data.
} ******************************* YACC compiler compiler as long as the language is clear, network programming :() Must appear once [] can appear, can not appear, once | or in the HTTP request, there are fewer recording in the HTTP request to record all the records in the HTTP header, which is to record the session HTTP
