tcpSer.c

#include <myhead.h>
#define SER_IP "192.168.119.143" // 设置IP地址
#define SER_PORT 6666			 // 设置端口号
int main(int argc, const char *argv[])
{
	// 1.创建socket
	int serfd = socket(AF_INET, SOCK_STREAM, 0);
	// 参数1表示ipv4
	// 参数2表示tcp通信
	// 参数3表示通讯协议
	if (serfd == -1)
	{
		perror("socket error");
		return -1;
	}
	// 将端口号快速重用
	int reuse = 1;
	if (setsockopt(serfd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)) == -1)
	{
		perror("setsockopt error");
		return -1;
	}
	// 2.绑定信息
	struct sockaddr_in sin;
	sin.sin_family = AF_INET;				 // 设置通讯域
	sin.sin_port = htons(SER_PORT);			 // 设置端口号
	sin.sin_addr.s_addr = inet_addr(SER_IP); // 设置ip地址
	if (bind(serfd, (struct sockaddr *)&sin, sizeof(sin)) == -1)
	{
		perror("bind error");
		return -1;
	}
	printf("bind success\n");
	// 3.设置为监听
	if (listen(serfd, 128))
	{
		perror("listen error");
		return -1;
	}
	printf("listen success\n");
	// 4.连接
	struct sockaddr_in cin;
	socklen_t socklen = sizeof(cin);
	int newfd = accept(serfd, (struct sockaddr *)&cin, &socklen);
	if (newfd == -1)
	{
		perror("accept error");
		return -1;
	}
	printf("[%s:%d]accept success\n", inet_ntoa(cin.sin_addr), ntohs(cin.sin_port));
	// 5.接收数据
	char buf[128] = "";
	while (1)
	{

		// 数据初始化
		bzero(buf, sizeof(buf));
		int res = recv(newfd, buf, sizeof(buf), 0);
		if (res == -1)
		{
			printf("读取失败\n");
			return -1;
		}
		else if (res == 0)
		{
			printf("客户端以下线\n");
			return -1;
		}
		if (strcmp(buf, "quit") == 0)
		{
			printf("服务端退出\n");
			break;
		}
		printf("[%s:%d]:%s\n", inet_ntoa(cin.sin_addr), ntohs(cin.sin_port), buf);
		bzero(buf, sizeof(buf));
		strcat(buf, "*-*");
		if (send(newfd, buf, sizeof(buf), 0) == -1)
		{
			perror("send error");
			return -1;

		} // 回复消息
		printf("回复成功\n");
	}
	// 6.关闭
	close(newfd);
	return 0;
}

tcpCli.c

#include <myhead.h>
#define SER_IP "192.168.119.143"
#define SER_PORT 6666
#define CLI_IP "192.168.119.143"
#define CLI_PORT 8888
int main(int argc, const char *argv[])
{
	// 1.创建
	int clifd = socket(AF_INET, SOCK_STREAM, 0);
	if (clifd == -1)
	{
		perror("socket error");
		return -1;
	}
	// 2.绑定
	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(clifd, (struct sockaddr *)&cin, sizeof(cin)) == -1)
	{
		perror("bind error");
		return -1;
	}
	printf("bind success\n");
	// 3.连接
	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(clifd, (struct sockaddr *)&sin, sizeof(sin)) == -1)
	{
		perror("connect error");
		return -1;
	}
	printf("connect success\n");
	// 4.数据收发
	char buf[128] = "";
	while (1)
	{
		bzero(buf, sizeof(buf));
		printf("请输入>>>");
		fgets(buf, sizeof(buf), stdin);
		buf[strlen(buf) - 1] = 0;
		if (send(clifd, buf, sizeof(buf), 0) == -1)
		{
			perror("send error");
			return -1;
		}
		if (strcmp(buf, "quit") == 0)
		{
			printf("客户端退出\n");
			break;
		}
		printf("发送成功\n");
		bzero(buf, sizeof(buf));
		recv(clifd, buf, sizeof(buf), 0);
		printf("收到服务器的消息:%s\n", buf);
	}
	// 5.关闭
	close(clifd);
	return 0;
}

效果展示