173, 6/9 ȸ¿ø°¡ÀÔ  ·Î±×ÀΠ 
   han7685
   ¼ÒÄÏÇÁ·Î±×·¡¹Ö ¿À·ùÁ»Ã£¾ÆÁÖ¼¼¿ä~¤Ð

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_Network&no=100 [º¹»ç]



#include<sys/socket.h>
#include<sys/stat.h>
#include<arpa/inet.h>
#include<stdio.h>
#include<string.h>
#define MAXBUF 1024

int main(int argc, char **argv)
{
int server_sockfd, client_sockfd;
int client_len, n;
char buf[MAXBUF];
struct sockaddr_in clientaddr, serveraddr;

client_len = sizeof(clientaddr);
if((server_sockfd = socket (AF_INET,SOCK_STREAM, IPPROTO_TCP)) == -1)
{
perror("socket error :");
exit(0);
}


}
bzero(&serveraddr, sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);
serveraddr.sin_port= htons(atoi(argv[1]));
bind (server_sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr));
listen(server_sockfd, 5);

while(1)
{
memset(buf,0x00,MAXBUF);
client_sockfd = accept(server_sockfd,
(struct sockaddr *)&clientaddr, &client_len);
printf("NEW Client connect : %s\n", inet_ntoa(clientaddr.sin_addr));
if((n=read(client_sockfd,buf,MAXBUF) <=0))
{
close(client_sockfd);
continue;
}
if(write(client_sockfd,buf,MAXBUF)<=0)
{
perror("write error:");
close(client_sockfd);
}
close(server_sockfd);
return 0;
}
main °ú
19¹ø¤Š¶óÀΠ exit(0)
45¹ø°¶óÀο¡¼­ ¿¡·¯°¡³­µ¥¿ä...
¾Æ¹«¸®ºÁµµ Àú´Â¸øã°Ú³×¿©...


  Hit : 3154     Date : 2012/11/19 10:55



    
º¸¾È¿Õ Ŭ¶óÀ̾ðÆ® sockÀ» Á¤ÇØÁÖ´Â clientlenÀ» intŸÀÔÀÌ ¾Æ´Ï¶ó socklen_t ÀÌ°Å¿´³ª ÀÌ Å¸ÀÔÀ¸·Î ÇØÁÖ¼¼¿ä. Ã¥¿¡ ±× ºÎºÐ º¸½Ã¸é µÉ°Å¿¡¿ä. 2012/11/21  
cd80 mainÇÔ¼ö¿¡¼­ »ç¿ëµÈ if¹®À» º¸½Ã¸é
if((server_sockfd = socket (AF_INET,SOCK_STREAM, IPPROTO_TCP)) == -1)
{
perror("socket error :");
exit(0);
}


}

ÀÌ·¸°Ô µÅÀִµ¥
if¹®À» ³¡³½ } ´ÙÀ½¿¡ ÀÖ´Â } ¶§¹®¿¡ ¿¡·¯°¡ ³³´Ï´Ù
2012/11/21  
73   iptime n100mini ¹«¼±·£ Áú¹®     JHack
12/11 3407
72   Network ±âº»ÀûÀÎ?     ISHack
10/29 2828
71   ³×Æ®¿öÅ© ¼­Àû ¹× Áøµµ°ü·Ã..[1]     ISHack
11/02 3147
70   °øÀ¯±â¿¡ °üÇؼ­[2]     is1251
04/02 2752
69   ±Ùµ¥.. ¹ÚÂù¾Ï°°Àº°æ¿ì¿¡´Â..     improve0014
02/11 3449
68   ¹éÆ®·¢ ½Ç½À¿ë USB ·£Ä«µå ÃßÀü ºÎŹµå¸³´Ï´Ù.[2]     ifocean
04/16 5087
67   mylg070 º¸¾È¼³Á¤ Áú¹®.     ien0l5uf
04/16 4308
66   °©Àڱ⠰øºÎÇÏ´Ù°¡ ±Ã±ÝÇÑ°Ô »ý°Ü¼­ ±Û¿Ã¸³´Ï´Ù     hyde0401
09/09 3120
65   ¿ÜºÎ¿Í ³×Æ®¿÷ÀÌ µÇ´ÂÁö ¾ÈµÇ´ÂÁö È®Àιæ¹ýÀº?[3]     huchik
05/15 3350
64   ÆÐŶ ½º´ÏÇÎ ¿¡ °ü·ÃÇÑ Áú¹®ÀÌ Çϳª ÀÖ½À´Ï´Ù. (FTP ¹æ½Ä Áú¹® )[4]     Hontaz
10/05 3689
63   syn flood ¿¡´ëÇؼ­ Áú¹® µå¸³´Ï´Ù.     homea90
06/08 3185
62   ÆÐŶ flooding°ø°Ý¿¡ ´ëÇؼ­ Áú¹®µå¸³´Ï´Ù.[3]     hks567
09/05 3581
61   DNS Áú¹®ÀÔ´Ï´Ù.[1]     hjt7942
06/09 3100
60   ¾ÆÀÌÇÇ ¾îµå·¹½Ì ÁÁÀºÀÚ·á ¾øÀ»±î¿ä?     hjt7942
07/05 3052
59   ³×Æ®¿öÅ© °øºÎÇÏ°í Àִµ¥ Áú¹®ÀÌ¿ä     hjeric
04/29 3045
58   ȨÆäÀÌÁö ¼­ÆÛ ´Ù¿î½ÃÅ°±â[9]     hel4elc
05/10 5488
57     [re] ¿©·ÁºÐµéÀÇ Áö½ÄÀ» Á¶±Ý¸¸ ³ª´² ÁÖ¼¼¿ä ¤Ð¤Ð     hch19860906
11/17 2762
56   °ø¿ë³×Æ®¿öÅ©¿Í Ȩ³×Æ®¿öÅ©, ȸ»ç³×Æ®¿öÅ© Áß ¾î´À °ÍÀÌ º¸¾ÈÀÌ ´õ ¿ì¼öÇÑ°¡¿ä?[1]     happy2673
11/10 4561
55   ³×Æ®¿öÅ© ÇØÅ·À» À§Çؼ­ ÇÊ¿äÇÑ ±âÃÊ°¡ ¹«¾ùÀÌÁÒ?[3]     hansu9911
04/01 3718
  ¼ÒÄÏÇÁ·Î±×·¡¹Ö ¿À·ùÁ»Ã£¾ÆÁÖ¼¼¿ä~¤Ð[2]     han7685
11/19 3153
[1][2][3][4][5] 6 [7][8][9]

Copyright 1999-2024 Zeroboard / skin by Hackerschool.org / Secure Patch by Hackerschool.org