生成一段基于c语言socket网络套接字的服务器代码,实现与esp8266进行透明传输
时间: 2023-08-31 12:31:29 浏览: 132
c语言实现Socket套接字通信
### 回答1:
以下是基于c语言socket网络套接字的服务器代码,用于实现与esp8266的透明传输:#include <stdio.h>
#include <sys/socket.h>
#include <string.h>
#include <arpa/inet.h>
#include <unistd.h>#define PORT 8080
#define MAXLINE 1024int main() {
int sockfd;
struct sockaddr_in servaddr;
// 创建socket
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
printf("Socket creation failed\n");
return -1;
} // 设置socket参数
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(PORT);
servaddr.sin_addr.s_addr = INADDR_ANY; // 绑定socket
if (bind(sockfd, (const struct sockaddr *)&servaddr, sizeof(servaddr)) < 0) {
printf("Bind failed\n");
return -1;
} // 监听
if (listen(sockfd, 5) < 0) {
printf("Listen failed\n");
return -1;
} // 接受esp8266的连接
int new_socket;
int addrlen = sizeof(servaddr);
new_socket = accept(sockfd, (struct sockaddr *)&servaddr, (socklen_t *)&addrlen);
if (new_socket < 0) {
printf("Accept failed\n");
return -1;
} // 读取esp8266发来的数据
char buffer[MAXLINE];
while (read(new_socket, buffer, MAXLINE) > 0) {
printf("Received data: %s\n", buffer);
write(new_socket, buffer, strlen(buffer));
} // 关闭socket
close(new_socket);
close(sockfd); return 0;
}
### 回答2:
以下是基于C语言的socket网络套接字服务器代码,用于与ESP8266透明传输数据:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define PORT 8080
#define BUFFER_SIZE 1024
int main() {
int serverSocket, newSocket, valread;
struct sockaddr_in address;
int addrlen = sizeof(address);
char buffer[BUFFER_SIZE] = {0};
char response[] = "Server received the message.";
// 创建套接字描述符
if ((serverSocket = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
perror("Socket creation failed");
exit(EXIT_FAILURE);
}
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(PORT);
// 将套接字绑定到指定的端口
if (bind(serverSocket, (struct sockaddr *)&address, sizeof(address)) < 0) {
perror("Bind failed");
exit(EXIT_FAILURE);
}
// 监听传入的连接
if (listen(serverSocket, 3) < 0) {
perror("Listen failed");
exit(EXIT_FAILURE);
}
// 接受传入的连接
if ((newSocket = accept(serverSocket, (struct sockaddr *)&address, (socklen_t *)&addrlen)) < 0) {
perror("Accept failed");
exit(EXIT_FAILURE);
}
while (1) {
// 读取客户端发送的消息
valread = read(newSocket, buffer, BUFFER_SIZE);
printf("Client message: %s\n", buffer);
// 向客户端发送响应
send(newSocket, response, strlen(response), 0);
printf("Response sent\n");
memset(buffer, 0, sizeof(buffer));
}
return 0;
}
```
该代码创建了一个TCP服务器,监听本地8080端口的传入连接。当ESP8266连接到该服务器时,它将循环读取ESP8266发送的消息,并发送一个响应给ESP8266。使用`socket()`函数创建套接字描述符,`bind()`函数将套接字绑定到指定的端口,`listen()`函数开始监听传入的连接,`accept()`函数接受传入的连接。在接收到消息后,使用`read()`函数读取客户端消息,并使用`send()`函数将响应发送给客户端。这样,服务器和ESP8266之间实现了透明传输。
### 回答3:
以下是一个基于C语言socket网络套接字的服务器代码,用于与ESP8266进行透明传输:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#define PORT 8080
#define BUFFER_SIZE 1024
int main() {
int server_socket, new_socket;
struct sockaddr_in server_addr, client_addr;
socklen_t addr_size;
char buffer[BUFFER_SIZE];
// 创建socket
server_socket = socket(AF_INET, SOCK_STREAM, 0);
if (server_socket < 0) {
perror("Error creating socket");
exit(1);
}
// 设置服务器地址
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(PORT);
server_addr.sin_addr.s_addr = INADDR_ANY;
memset(server_addr.sin_zero, '\0', sizeof(server_addr.sin_zero));
// 将socket与服务器地址绑定
if (bind(server_socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0) {
perror("Error binding");
exit(1);
}
// 开始监听连接请求
if (listen(server_socket, 10) == 0) {
printf("Listening...\n");
} else {
perror("Error listening");
exit(1);
}
addr_size = sizeof(client_addr);
// 接受客户端连接
new_socket = accept(server_socket, (struct sockaddr *) &client_addr, &addr_size);
if (new_socket < 0) {
perror("Error accepting connection");
exit(1);
}
// 与客户端进行数据传输
while (1) {
memset(buffer, 0, sizeof(buffer));
// 从客户端接收数据
ssize_t recv_size = recv(new_socket, buffer, sizeof(buffer), 0);
if (recv_size == 0) {
printf("Client disconnected\n");
break;
} else if (recv_size < 0) {
perror("Error receiving data from client");
exit(1);
}
printf("Received: %s", buffer);
// 回复客户端
ssize_t send_size = send(new_socket, buffer, recv_size, 0);
if (send_size < 0) {
perror("Error sending data to client");
exit(1);
}
}
// 关闭连接和socket
close(new_socket);
close(server_socket);
return 0;
}
```
以上的代码是一个简单的服务器示例,使用TCP/IP协议与ESP8266模块进行通信。首先,创建一个socket并绑定到指定端口。然后,服务器开始监听连接请求,一旦有客户端连接,便接受连接并与客户端进行数据传输。服务器会不断接收来自客户端的数据,并将其打印出来,然后将其原样发送回客户端。当客户端断开连接时,服务器会退出循环。
请注意,该代码只是一个基本示例,实际应用中可能需要添加更多的错误处理和安全性措施。
阅读全文