BRONZE
BRONZE ??? ??? ??
[????] UDP Talk Program
??? : talk_server_udp.c
? ? : ?? UDP ?????? 1:1 ??? ?? UDP ?? ????
??? : cc -o talk_server_udp talk_server_udp.c -lsocket
??? : talk_server
------------------------------------------------------------
??? : talk_client_udp.c
? ? : ?? ??? 1:1 ??? ?? UDP ????? ????
??? : cc -o talk_client_udp talk_client_udp.c -lsocket -lnsl
??? : talk_client
1 ???
????
????? 2002.06.13
?????
2002.06
1P ????
![[????] UDP Talk Program](https://image4.ppt2video.com/Production/thumb212/2002/06/13/data1110330-0001.jpg)
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????
??
??? : talk_server_udp.c
? ? : ?? UDP ?????? 1:1 ??? ?? UDP ?? ????
??? : cc -o talk_server_udp talk_server_udp.c -lsocket
??? : talk_server
------------------------------------------------------------
??? : talk_client_udp.c
? ? : ?? ??? 1:1 ??? ?? UDP ????? ????
??? : cc -o talk_client_udp talk_client_udp.c -lsocket -lnsl
??? : talk_client
??
1. ???? ??
A. Talk ????
B. ??? ??? ??? ???? ??decimal ???
C. fork()? ???? ??? ??? ????
2. ???? ????: Linux
3. ???? ????????
1. ???? ??: TCP? ??? talk ????? UDP ? ??
A. Talk ????: ??? ?????? ???? ??? ???? ??? ??, ? ?? ?? ??? ??.
B. ??? ??? ??? ???? ??
a. UDP ????? ?????? gethostbyname()??? ??
b. hostent ????? myhost->h_addr_list[0]? dotted decimal ??? ??? inet_addr()? IP ??? ??
C. fork()? ???? ??? ??? ????
a. talk_server_udp.c : ?????? ??? ???? fork ?? recvfrom ??
b. talk_client_udp.c : ???? ??? ??? ???? ?? fork ?? sendto ??
c. ??? ?????? ?? ?????? ??? ?? ??
2. ???? ????: Linux
A. $gcc -o talk_server_udp talk_server_udp.c
$./talk_server_udp
B. $gcc -o talk_client_udp talk_client_udp.c
C. ???? ??? exit
3. ???? ????:
==> ???? ??? ??? ????? ???? telnet/ftp ??? ???? ??? ??? ??? ???? ??? ?????. (localhost ==> 127.0.0.1)
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?? ? ??? ??? ??? ??, ?? ?????? ???? ????.
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???? ???? ??? ?? ??? ?? ?? ??? ??? ????? ??? ?? ??? ????? ?? ?????? ?? ???? ?? ?? ?? ??? 70% ?? ??? ???? ?? (???? ??? ? ?? ?? ???) ???? ?? ???, ????, ??, ?? ?? ??? ??? ?? ??? ??? ?? ??? ??? ???? ?? ??
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[????] Udp Chatting Program In Unix C
3???
1. get_hostent.c? ?? output: MCR: 210.125.147.125 A. ???? ??: a. host? aliases? ??????? alises? ???? dotted decimal??? ?? b. host? aliases? ?????? ???, host ??? ???? ?? ?? B. ????: mcr ??? ..
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???? ????? ????
25???
< ???? ????? 3,4? ???? > ???? ????? 3(4??)? ???? 4. ???? ??? ?? ?? ???? tcp_talkserv.c? ????, ??? ????? ?? ???? ? ??????? 10? ???? ??? ??? ??????? ????? ???.(??: ?? ??? ???? ??? ???? ??? ??? ??... -
???????(C, C++)
fprintf(stderr, "Usage: %s <Server Port>\n", argv[0]); exit(1); } echoServPort = atoi(argv[1]); /* First arg: local port */ servSock = CreateTCPServerSocket(echoServPort..
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3. ?? ??? ?? ???? ?? ????? ??? ???? ?? ???? ? ? ??. ??? ?? ??? ???? ???? ????? ???? ?????, ???? ?? ????? ??? ??? ??? ??? ??? ??? ??. ??? ???? ? ?? ?? ?? ????? ???. ????? ?? ?????? ??? ??? ??? ?? ? ..
?? ??? ????? EasyAI
¡°EasyAI ? ??? ?? ??? ???? ?? ? ????"
