send.c

linux下的C。点对点一收一发测试_192.168.0.1发_192.168.0.2收

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

char *targetip = "192.168.0.2" ;
int port = 6789 ;
char *txt = "text broadcase" ;

int main()
{
	int socket_des ;
	struct sockaddr_in address ;
	
	socket_des = socket( AF_INET , SOCK_DGRAM , 0 ) ;
	if ( socket_des == - 1 )
	{
		printf("Create socket error\n") ;
		exit(EXIT_FAILURE) ;
	}

	bzero(&address,sizeof(address)) ;
	address.sin_family = AF_INET ;
	address.sin_addr.s_addr = inet_addr(targetip) ;
	address.sin_port = htons(port) ;

	while(1)
	{
		if ( sendto(socket_des,txt,14,0,(struct sockaddr*)&address,sizeof(address)) < 0 )
		{
			printf("send error\n") ;
			exit(EXIT_FAILURE) ;
		}
		printf("send 1 package\n") ;
		sleep(3) ;
	}
	exit(EXIT_SUCCESS) ;

}