create_socket.c

来自「一个基于linux的TCP/IP协议栈的实现」· C语言 代码 · 共 29 行

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include "my_inet.h"
#include <stdio.h>
#include <errno.h>

int main()
{
	int i;
	struct sockaddr_in dest;
	dest.sin_family = MY_PF_INET;
	dest.sin_addr.s_addr = 0x80808080;
	int fd = socket( MY_PF_INET, SOCK_RAW, MY_IPPROTO_ICMP );
	if( fd < 0 ){
		perror("error: ");
		return -1;
	}
	int bwrite = sendto( fd, "abcdefg", 7, 0, (struct sockaddr*)&dest, sizeof(dest) );
        if( bwrite == -1 ){
            perror("error: ");
            return -1;
        }

	printf("sendto: %d\n", bwrite);
	close( fd );
	return 0;
}