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37.oob_send.c
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37.oob_send.c
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//
// Created by satellite on 2023-06-01.
//
#include "stdio.h"
#include "stdlib.h"
#include "unistd.h"
#include "string.h"
#include "sys/socket.h"
#include "arpa/inet.h"
#define BUF_SIZE 30
void error_handling(char * message);
int main(int argc , char * argv[])
{
int sock;
struct sockaddr_in recv_adr;
if(argc != 3)
{
printf("Usage : %s : <IP> <PROT>",argv[1]);
exit(1);
}
sock = socket(PF_INET,SOCK_STREAM,0);
memset(&recv_adr,0,sizeof(recv_adr));
recv_adr.sin_family = AF_INET;
recv_adr.sin_addr.s_addr = inet_addr(argv[1]);
recv_adr.sin_port = htons(atoi(argv[2]));
if( (connect(sock,(struct sockaddr*)&recv_adr,sizeof (recv_adr))) == -1)
error_handling("connect error");
write(sock,"123", strlen("123"));
send(sock,"4", strlen("4"),MSG_OOB);
write(sock,"567",strlen("567"));
send(sock,"890", strlen("890"),MSG_OOB);
close(sock);
return 0;
}
void error_handling(char *message) {
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}