day2:TCP、UDP网络通信模型

思维导图

机械臂实现

#include 
#define SER_POTR 8899
#define SER_IP "192.168.125.223"
int main(int argc, const char *argv[])
{
	//创建套接字
	int cfd=socket(AF_INET,SOCK_STREAM,0);
	if(cfd==-1)
	{
		perror("");
		return -1;
	}
	//链接
	struct sockaddr_in sin;
	sin.sin_family=AF_INET;
	sin.sin_port=htons(SER_POTR);
	sin.sin_addr.s_addr=inet_addr(SER_IP);
	if(connect(cfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
	{
		perror("connect error:");
		return -1;
	}
	char red[5]={0xff,0x02,0x00,0x00,0xff};
	unsigned char blue[5]={0xff,0x02,0x01,0x8a,0xff};
	while(1)
	{
		char cmd;
		printf("请输入命令：");
		scanf("%c",&cmd);
		getchar();
		switch(cmd)
		{
		case 'w':
			{

				red[3]+=10;
				send(cfd,red,sizeof(red),0);
				break;
			}
		case 's':
			{

				red[3]-=10;
				send(cfd,red,sizeof(red),0);
				break;
			}
		case 'a':
			{

				blue[3]-=10;
				send(cfd,blue,sizeof(blue),0);
				break;
			}
		case 'd':
			{

				blue[3]+=10;
				send(cfd,blue,sizeof(blue),0);

				break;
			}
		default:
			{
				printf("输入有误\n");
			}

		}
	}



	return 0;
}

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