Linux套接字(UDP篇)

最新推荐文章于 2025-08-23 01:21:08 发布

wwkaven

最新推荐文章于 2025-08-23 01:21:08 发布

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分类专栏： Linux 文章标签： linux socket

本文链接：https://blog.youkuaiyun.com/wwkaven/article/details/39314583

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1、服务器端：

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main()
{
    int sockfd;
    struct sockaddr_in servaddr;

    sockfd = socket(PF_INET, SOCK_DGRAM, 0);

    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    servaddr.sin_port = htons(5000);

    bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));

    int n = 10;
    char recvline[1024] = {0};
    

    while (n > 0){
    	recvfrom(sockfd, recvline, 1024, 0, NULL, NULL);

    	printf("%s\n", recvline);

		n--;
    }

    close(sockfd);
}

2、客户端：

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main()
{
    int sockfd;
    struct sockaddr_in servaddr;

    sockfd = socket(PF_INET, SOCK_DGRAM, 0);

    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_port = htons(5000);
    servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");

    char sendline[100];
    sprintf(sendline, "This is client!\n");

    sendto(sockfd, sendline, strlen(sendline), 0, (struct sockaddr *)&servaddr, sizeof(servaddr));

    close(sockfd);

    return 1;

}