udpclient.c

Linux/UNIX网络通信中UDP通信的服务器和客服端之间的通信。

#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdio.h>

int main()
{
	int sockClient;
	struct sockaddr_in addrSrv;

	sockClient = socket(AF_INET,SOCK_DGRAM,0);
	
	addrSrv.sin_addr.s_addr=inet_addr("127.0.0.1");
	addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(6000);
	
    while(1)
    	{
		sendto(sockClient,"Hello",strlen("Hello")+1,0,(struct sockaddr*)&addrSrv,sizeof(struct sockaddr));
		sleep(2);
    	}
	
	close(sockClient);
	return 0;
}