请给出相应c代码
时间: 2023-10-04 22:07:08 浏览: 23
以下是使用TCP协议实现服务端和客户端通信的简单C语言代码:
服务端代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#define PORT 8888
#define MAX_BUFFER_SIZE 1024
int main() {
// 创建Socket
int server_fd = socket(AF_INET, SOCK_STREAM, 0);
if (server_fd == -1) {
perror("socket error");
exit(EXIT_FAILURE);
}
// 绑定IP地址和端口号
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = INADDR_ANY;
server_addr.sin_port = htons(PORT);
if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) {
perror("bind error");
exit(EXIT_FAILURE);
}
// 监听连接请求
if (listen(server_fd, 5) == -1) {
perror("listen error");
exit(EXIT_FAILURE);
}
printf("Server is listening on port %d...\n", PORT);
// 接受客户端连接请求
struct sockaddr_in client_addr;
memset(&client_addr, 0, sizeof(client_addr));
socklen_t client_len = sizeof(client_addr);
int client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &client_len);
if (client_fd == -1) {
perror("accept error");
exit(EXIT_FAILURE);
}
printf("Client %s:%d connected.\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
// 接收客户端数据并发送响应
char buffer[MAX_BUFFER_SIZE];
while (1) {
memset(buffer, 0, sizeof(buffer));
if (recv(client_fd, buffer, sizeof(buffer), 0) == -1) {
perror("recv error");
exit(EXIT_FAILURE);
}
printf("Received message from client: %s\n", buffer);
if (strcmp(buffer, "quit") == 0) {
printf("Client %s:%d disconnected.\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
break;
}
char response[MAX_BUFFER_SIZE];
sprintf(response, "Response from server: %s", buffer);
if (send(client_fd, response, strlen(response), 0) == -1) {
perror("send error");
exit(EXIT_FAILURE);
}
}
// 关闭Socket
close(client_fd);
close(server_fd);
return 0;
}
```
客户端代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#define SERVER_IP "127.0.0.1"
#define PORT 8888
#define MAX_BUFFER_SIZE 1024
int main() {
// 创建Socket
int client_fd = socket(AF_INET, SOCK_STREAM, 0);
if (client_fd == -1) {
perror("socket error");
exit(EXIT_FAILURE);
}
// 连接服务端
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = inet_addr(SERVER_IP);
server_addr.sin_port = htons(PORT);
if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) {
perror("connect error");
exit(EXIT_FAILURE);
}
printf("Connected to server %s:%d.\n", SERVER_IP, PORT);
// 发送数据并接收响应
char buffer[MAX_BUFFER_SIZE];
while (1) {
printf("Input message to send (input 'quit' to exit): ");
scanf("%s", buffer);
if (send(client_fd, buffer, strlen(buffer), 0) == -1) {
perror("send error");
exit(EXIT_FAILURE);
}
if (strcmp(buffer, "quit") == 0) {
break;
}
memset(buffer, 0, sizeof(buffer));
if (recv(client_fd, buffer, sizeof(buffer), 0) == -1) {
perror("recv error");
exit(EXIT_FAILURE);
}
printf("Received message from server: %s\n", buffer);
}
// 关闭Socket
close(client_fd);
return 0;
}
```
以上代码仅供参考,具体实现需要根据实际需求进行调整和完善。
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