请问你能编写一个 TCP服务器端SOCKET程序和TCP客户端SOCKET程序吗
时间: 2024-05-06 09:20:44 浏览: 3
抱歉,作为AI语言模型,我无法直接编写代码,但是我可以提供TCP服务器端SOCKET程序和TCP客户端SOCKET程序的基本框架和思路。
TCP服务器端SOCKET程序基本框架:
1. 创建一个TCP套接字
2. 绑定IP地址和端口号
3. 监听套接字,等待客户端连接
4. 接受客户端连接请求,返回一个新的套接字
5. 接收和发送数据
6. 关闭套接字
TCP客户端SOCKET程序基本框架:
1. 创建一个TCP套接字
2. 连接服务器
3. 发送和接收数据
4. 关闭套接字
下面是TCP服务器端SOCKET程序和TCP客户端SOCKET程序的示例代码,供参考:
TCP服务器端SOCKET程序:
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
int main(int argc, char *argv[])
{
int sockfd, newsockfd, portno;
socklen_t clilen;
char buffer[256];
struct sockaddr_in serv_addr, cli_addr;
int n;
if (argc < 2) {
fprintf(stderr,"ERROR, no port provided\n");
exit(1);
}
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("ERROR opening socket");
exit(1);
}
bzero((char *) &serv_addr, sizeof(serv_addr));
portno = atoi(argv[1]);
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(portno);
if (bind(sockfd, (struct sockaddr *) &serv_addr,
sizeof(serv_addr)) < 0) {
perror("ERROR on binding");
exit(1);
}
listen(sockfd,5);
clilen = sizeof(cli_addr);
newsockfd = accept(sockfd,
(struct sockaddr *) &cli_addr,
&clilen);
if (newsockfd < 0) {
perror("ERROR on accept");
exit(1);
}
bzero(buffer,256);
n = read(newsockfd,buffer,255);
if (n < 0) {
perror("ERROR reading from socket");
exit(1);
}
printf("Here is the message: %s\n",buffer);
n = write(newsockfd,"I got your message",18);
if (n < 0) {
perror("ERROR writing to socket");
exit(1);
}
close(newsockfd);
close(sockfd);
return 0;
}
```
TCP客户端SOCKET程序:
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
int main(int argc, char *argv[])
{
int sockfd, portno, n;
struct sockaddr_in serv_addr;
struct hostent *server;
char buffer[256];
if (argc < 3) {
fprintf(stderr,"usage %s hostname port\n", argv[0]);
exit(0);
}
portno = atoi(argv[2]);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("ERROR opening socket");
exit(1);
}
server = gethostbyname(argv[1]);
if (server == NULL) {
fprintf(stderr,"ERROR, no such host\n");
exit(0);
}
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
bcopy((char *)server->h_addr,
(char *)&serv_addr.sin_addr.s_addr,
server->h_length);
serv_addr.sin_port = htons(portno);
if (connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0) {
perror("ERROR connecting");
exit(1);
}
printf("Please enter the message: ");
bzero(buffer,256);
fgets(buffer,255,stdin);
n = write(sockfd,buffer,strlen(buffer));
if (n < 0) {
perror("ERROR writing to socket");
exit(1);
}
bzero(buffer,256);
n = read(sockfd,buffer,255);
if (n < 0) {
perror("ERROR reading from socket");
exit(1);
}
printf("%s\n",buffer);
close(sockfd);
return 0;
}
```
这些程序只是基本的示例,可以根据需要进行修改和优化。