网络编程：5/18

#include <myhead.h>
#define CLI_PORT 9999
#define CLI_IP "192.168.125.92"
#define SER_IP "192.168.125.90"
#define SER_PORT 8888
int main(int argc, const char *argv[])
{
	int cfd=socket(AF_INET,SOCK_STREAM,0);
	if(cfd==-1){
		perror("socket error");
		return -1;
	}
	printf("socket success cfd=%d\n",cfd);

	struct sockaddr_in cin;
	cin.sin_family=AF_INET;
	cin.sin_port=htons(CLI_PORT);
	cin.sin_addr.s_addr=inet_addr(CLI_IP);

	if(bind(cfd,(struct sockaddr*)&cin,sizeof(cin))==-1){
		perror("bind error");
		return -1;
	}
	printf("bind success\n");


	struct sockaddr_in sin;
	sin.sin_family=AF_INET;
	sin.sin_port=htons(SER_PORT);
	sin.sin_addr.s_addr=inet_addr(SER_IP);

	if(connect(cfd,(struct sockaddr*)&sin,sizeof(sin))==-1){
		perror("connet error");
		return -1;
	}
	printf("connet success\n");

	char red[5]={0xff,0x02,0x00,0x00,0xff};
	unsigned char blue[5]={0xff,0x02,0x01,0x00,0xff};
	
	send(cfd,red,sizeof(red),0);
	usleep(50000);
	send(cfd,blue,sizeof(blue),0);

	char ang_red=0x00;
	unsigned char ang_blue=0x00;
	while(1){
		char con=getchar();
		switch(con){
		case 'w':
			red[3]+=0x05;
			send(cfd,red,sizeof(red),0);
			break;
		case 'a':
			blue[3]-=0x05;
			send(cfd,blue,sizeof(blue),0);
			break;
		case 's':
			red[3]-=0x05;
			send(cfd,red,sizeof(red),0);
			break;
		case 'd':
			blue[3]+=0x05;
			send(cfd,blue,sizeof(blue),0);
			break;
		default:
			break;
		}
	}
	close(cfd);
	return 0;
}