linux两个客户端通过服务器进行单聊c语言代码实现
时间: 2024-04-14 09:30:16 浏览: 14
以下是一个使用 C 语言实现的简单示例代码,演示了如何通过服务器进行两个客户端之间的单聊:
服务器端代码(server.c):
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#define MAX_MSG_SIZE 1024
#define SERVER_PORT 8888
void error(const char *msg) {
perror(msg);
exit(1);
}
int main() {
int sockfd, newsockfd;
socklen_t clilen;
char buffer[MAX_MSG_SIZE];
struct sockaddr_in serv_addr, cli_addr;
int n;
// 创建套接字
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
error("ERROR opening socket");
}
// 初始化服务器地址结构体
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(SERVER_PORT);
// 绑定套接字到指定端口
if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
error("ERROR on binding");
}
// 监听连接请求
listen(sockfd, 5);
printf("Server started. Waiting for incoming connections...\n");
clilen = sizeof(cli_addr);
// 接受客户端连接请求
newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, &clilen);
if (newsockfd < 0) {
error("ERROR on accept");
}
printf("Client connected. You can start chatting.\n");
while (1) {
// 从客户端接收消息
memset(buffer, 0, sizeof(buffer));
n = read(newsockfd, buffer, sizeof(buffer));
if (n < 0) {
error("ERROR reading from socket");
}
printf("Client: %s", buffer);
// 发送消息给客户端
printf("Server: ");
fgets(buffer, sizeof(buffer), stdin);
n = write(newsockfd, buffer, strlen(buffer));
if (n < 0) {
error("ERROR writing to socket");
}
// 如果客户端发送 "bye" 消息,则断开连接
if (strcmp(buffer, "bye\n") == 0) {
break;
}
}
close(newsockfd);
close(sockfd);
return 0;
}
```
客户端代码(client.c):
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#define MAX_MSG_SIZE 1024
#define SERVER_PORT 8888
void error(const char *msg) {
perror(msg);
exit(1);
}
int main() {
int sockfd;
struct sockaddr_in serv_addr;
char buffer[MAX_MSG_SIZE];
int n;
// 创建套接字
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
error("ERROR opening socket");
}
// 初始化服务器地址结构体
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(SERVER_PORT);
// 将服务器 IP 地址转换为二进制形式
if (inet_pton(AF_INET, "服务器IP地址", &(serv_addr.sin_addr)) <= 0) {
error("ERROR converting server IP address");
}
// 连接到服务器
if (connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
error("ERROR connecting");
}
printf("Connected to server. You can start chatting.\n");
while (1) {
// 发送消息给服务器
printf("Client: ");
fgets(buffer, sizeof(buffer), stdin);
n = write(sockfd, buffer, strlen(buffer));
if (n < 0) {
error("ERROR writing to socket");
}
// 如果发送 "bye" 消息,则断开连接
if (strcmp(buffer, "bye\n") == 0) {
break;
}
// 从服务器接收消息
memset(buffer, 0, sizeof(buffer));
n = read(sockfd, buffer, sizeof(buffer));
if (n < 0) {
error("ERROR reading from socket");
}
printf("Server: %s", buffer);
}
close(sockfd);
return 0;
}
```
请将 "服务器IP地址" 替换为实际的服务器 IP 地址。编译并运行服务器端代码和两个客户端代码后,两个客户端即可通过服务器进行单聊。