本文主要是介绍3.18网络编程，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
广播发送端流程
#include <myhead.h>
int main(int argc, const char *argv[])
{int sfd = socket(AF_INET,SOCK_DGRAM,0);if(sfd==-1){perror("socket");return -1;}printf("sfd = % d\n",sfd);//设置地址和端口号快速重用int bro = 1;if(setsockopt(sfd,SOL_SOCKET,SO_BROADCAST,&bro,sizeof(bro))==-1){perror("setsockopt");return -1;}struct sockaddr_in rin;rin.sin_family = AF_INET;rin.sin_port = htons(8888);rin.sin_addr.s_addr = inet_addr("192.168.141.255");char sbuf[128]="";while (1){printf("input ");fgets(sbuf,sizeof(sbuf),stdin);sbuf[strlen(sbuf)-1]=0;sendto(sfd,sbuf,sizeof(sbuf),0,(struct sockaddr*)&rin,sizeof(rin));printf("成功\n");}close(sfd);return 0;
}
广播接收端
#include <myhead.h>
int main(int argc, const char *argv[])
{int rfd = socket(AF_INET,SOCK_DGRAM,0);if(rfd==-1){perror("socket");return -1;}printf("rfd = %d\n",rfd);struct sockaddr_in rin;rin.sin_family = AF_INET;rin.sin_port = htons(8888);rin.sin_addr.s_addr = inet_addr("192.168.141.255");if (bind(rfd,(struct sockaddr*)&rin,sizeof(rin))==-1){perror("bind");return -1;}printf("bind success\n");char rbuf[128]="";while (1){bzero(rbuf,sizeof(rbuf));recv(rfd,rbuf,sizeof(rbuf),0);printf("gets %s\n",rbuf);}close(rfd);return 0;
}
组播发送端
#include <myhead.h>int main(int argc, const char *argv[])
{int sfd = socket(AF_INET,SOCK_DGRAM,0);if(sfd==-1){perror("socket");return -1;}struct sockaddr_in rin;rin.sin_family = AF_INET;rin.sin_port = htons(8888);rin.sin_addr.s_addr = inet_addr("224.1.2.3");char sbuf[128]="";while (1){printf("input ");fgets(sbuf,sizeof(sbuf),stdin);sbuf[strlen(sbuf)-1]=0;sendto(sfd,sbuf,sizeof(sbuf),0,(struct sockaddr*)&rin,sizeof(rin));printf("成功\n");}close(sfd);return 0;
}
组播接收端
#include <myhead.h>int main(int argc, const char *argv[])
{int rfd = socket(AF_INET,SOCK_DGRAM,0);if(rfd==-1){perror("socket");return -1;}//printf("sfd = % d\n",rfd);//网络属性获取struct ip_mreqn im;im.imr_multiaddr.s_addr = inet_addr("224.1.2.3");im.imr_address.s_addr = inet_addr("192.168.141.134");im.imr_ifindex = 2;if(setsockopt(rfd,IPPROTO_IP,IP_ADD_MEMBERSHIP,&im,sizeof(im))==-1){perror("setsockopt");return -1;}printf("success join in 多播组\n");struct sockaddr_in rin;rin.sin_family = AF_INET;rin.sin_port = htons(8888);rin.sin_addr.s_addr = inet_addr("224.1.2.3");if (bind(rfd,(struct sockaddr*)&rin,sizeof(rin))==-1){perror("bind");return -1;}//printf("bind success\n");char rbuf[128]="";while (1){bzero(rbuf,sizeof(rbuf));recv(rfd,rbuf,sizeof(rbuf),0);printf("gets %s\n",rbuf);}close(rfd);return 0;
}
流式套接字服务器
#include <head.h>
int main(int argc, char const *argv[])
{// 1.创建int sfd = socket(AF_UNIX, SOCK_STREAM, 0);if (sfd == -1){perror("socket");return -1;}printf("socket success\n");// 判断要绑定的套接字是否存在if (access("./unix", F_OK) == 0){// 将文件删除if (unlink("./unix") == -1){perror("unlink");return -1;}}// 2.绑定套接字文件// 2.1填充地址信息结构体struct sockaddr_un sun;sun.sun_family = AF_UNIX;strcpy(sun.sun_path, "./unix");if (bind(sfd, (struct sockaddr *)&sun, sizeof(sun)) == -1){perror("bind");return -1;}printf("bind success\n");// 3.启动被动监听if (listen(sfd, 128) == -1){perror("listen");return -1;}// 4.等待客户端链接请求//地址信息结构体struct sockaddr_un cun;socklen_t socklen = sizeof(cun);// 4.2接受客户端int newfd = accept(sfd, (struct sockaddr *)&cun, &socklen);if (newfd == -1){perror("accept");return -1;}// 5.相互通信char rbuf[128] = "0";while (1){// 将容器清空bzero(rbuf, sizeof(rbuf));// 从套接字中读取数据int res = recv(newfd, rbuf, sizeof(rbuf) - 1, 0);if (res == 0){printf("客户端下线\n");break;}printf("%s :%s\n", cun.sun_path, rbuf);// 加个笑脸回过去strcat(rbuf, "*_*");send(newfd, rbuf, strlen(rbuf), 0);printf("发送成功\n");}return 0;
}流式套接字客户端
#include <head.h>
int main(int argc, char const *argv[])
{// 1.创建客户端套接字int cfd = socket(AF_UNIX, SOCK_STREAM, 0);if (cfd == -1){perror("socket");return -1;}printf("socket success\n");// 判断要绑定的套接字是否存在if (access("./linux", F_OK) == 0){// 将该文件删除if (unlink("./linux") == -1){perror("unlink");return -1;}}// 2.绑定套接字文件// 2.1填充客户端地址信息结构体struct sockaddr_un cun;cun.sun_family = AF_UNIX;strcpy(cun.sun_path, "./linux");// 2.2绑定端口号和IPif (bind(cfd, (struct sockaddr *)&cun, sizeof(cun)) == -1){perror("bind");return -1;}printf("bind success\n");// 3.连接服务器// 3.1地址信息结构体struct sockaddr_un sun;sun.sun_family = AF_UNIX;strcpy(sun.sun_path, "unix");// 3.2连接服务器if (connect(cfd, (struct sockaddr *)&sun, sizeof(sun)) == -1){perror("connect");return -1;}printf("连接成功\n");// 4.收发数据char buf[128] = "0";while (1){printf("请输入>>>");fgets(buf, sizeof(buf), stdin); // 从终端获取字符串buf[strlen(buf) - 1] = '\0';//退出if (strcmp(buf, "quit") == 0){break;}//发送给服务器send(cfd, buf, strlen(buf), 0);//将字符数组清空bzero(buf, sizeof(buf));recv(cfd, buf, sizeof(buf) - 1, 0);printf("收到服务器消息为:%s \n", buf);}// 5.关闭套接字close(cfd);return 0;
}这篇关于3.18网络编程的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
