TCP协议多进程多线程并发服务器

TCP多进程多线程并发服务器

1.多进程并发服务器

#include <myhead.h>#define SERPORT 6666
#define SERIP "192.168.0.136"
#define BLACKLOG 10void hande(int a)
{if(a==SIGCHLD){while(waitpid(-1,NULL,WNOHANG)!=-1);//回收僵尸进程}
}int main(int argc, const char *argv[])
{if(signal(SIGCHLD,hande)==SIG_ERR)//捕获子进程退出的信号{perror("signal");return -1;}//1.创建原始套接字int oldfd = socket(AF_INET,SOCK_STREAM,0);//IPV4，TCP通信方式if(oldfd ==-1){perror("socket");return -1;}//设置套接字属性，端口号快速复用int k=666;if(setsockopt(oldfd,SOL_SOCKET,SO_REUSEADDR,&k,sizeof(k))==-1){perror("setsockopt");return -1;}//2.绑定IP和端口struct sockaddr_in sin={.sin_family=AF_INET,.sin_port=htons(SERPORT),.sin_addr.s_addr=inet_addr(SERIP)};if(bind(oldfd,(struct sockaddr *)&sin,sizeof(sin))==-1){perror("bind");return -1;}//3.监听if(listen(oldfd,BLACKLOG)==-1){perror("listen");return -1;}//4.循环接受客户端请求，创建进程struct sockaddr_in cin;int cinlen=sizeof(cin);while(1){int newfd=accept(oldfd,(struct sockaddr *)&cin,&cinlen);//接受客户端信息（IP和端口号）if(newfd==-1){perror("accept");return -1;}printf("%s:%d连接成功\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));pid_t pid=fork();//创建进程if(pid>0)//{close(newfd);//关闭上一次退出的文件描述符}else if(pid==0){char buff[1024];while(1){int len=recv(newfd,buff,sizeof(buff),0);//接受客户端发送来的信息if(len==0){printf("客户端退出\n");break;}printf("服务器收到的消息：%s\n",buff);strcat(buff,"/succ");send(newfd,buff,sizeof(buff),0);printf("发送成功\n");close(newfd);//关闭新的文件描述符exit(0);//退出子进程}}else{perror("fork");return -1;}}close(oldfd);return 0;
}

2.多线程并发服务器

#include <myhead.h>#define SERPORT 6666
#define SERIP "192.168.0.136"
#define BLACKLOG 10typedef struct
{int newfd;//存储新文件描述符struct sockaddr_in cin;//存储客户端信息
}New;void *fun1(void *a)
{int newfd = ((New *)a)->newfd;struct sockaddr_in cin = ((New *)a)->cin;//解析客户端信息char buff[1024];while(1){memset(buff,0,sizeof(buff));int len = recv(newfd,buff,sizeof(buff),0);printf("收到%s:%d的信息：%s\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),buff);//输出客户端信息if(len==0){printf("客户端退出\n");break;}strcat(buff,"/succ");//回个信息send(newfd,buff,sizeof(buff),0);printf("发送成功\n");}pthread_exit(NULL);
}int main(int argc, const char *argv[])
{//1.创建原始套接字int oldfd = socket(AF_INET,SOCK_STREAM,0);//IPV4，TCP通信方式if(oldfd ==-1){perror("socket");return -1;}//设置套接字属性，端口号快速复用int k=666;if(setsockopt(oldfd,SOL_SOCKET,SO_REUSEADDR,&k,sizeof(k))==-1){perror("setsockopt");return -1;}//2.绑定IP和端口struct sockaddr_in sin={.sin_family=AF_INET,.sin_port=htons(SERPORT),.sin_addr.s_addr=inet_addr(SERIP)};if(bind(oldfd,(struct sockaddr *)&sin,sizeof(sin))==-1){perror("bind");return -1;}//3.监听if(listen(oldfd,BLACKLOG)==-1){perror("listen");return -1;}struct sockaddr_in cin;int cinlen=sizeof(cin);New msg;while(1){int newfd=accept(oldfd,(struct sockaddr *)&cin,&cinlen);//接受客户端信息（IP和端口号）if(newfd==-1){perror("accept");return -1;}printf("%s:%d连接成功\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));msg.newfd=newfd;msg.cin=cin;pthread_t tid;if(pthread_create(&tid,NULL,fun1,&msg)!=0)//创建线程，传入参数结构体{perror("pthread_create");return -1;}pthread_detach(tid);//挂起由系统回收线程}close(oldfd);return 0;
}

客户端：

#include <myhead.h>#define CLIPORT 6666
#define CLIIP "192.168.0.136"
int main(int argc, const char *argv[])
{int oldfd = socket(AF_INET,SOCK_STREAM,0);//1、创建原始套节字if(oldfd==-1){perror("socket");return -1;}//2、bind可选//3、连接服务器struct sockaddr_in cin = {.sin_family = AF_INET,//IPV4通信.sin_port = htons(CLIPORT),//端口号转为网络字节序.sin_addr.s_addr = inet_addr(CLIIP)//IP地址转为网络字节序};if(connect(oldfd,(struct sockaddr *)&cin,sizeof(cin))==-1){perror("connect");return -1;}printf("连接服务器成功\n");//发送消息char buff[1024];while(1){memset(buff,0,sizeof(buff));printf("客户端发信息：");fgets(buff,sizeof(buff),stdin);buff[strlen(buff)-1] = '\0';send(oldfd,buff,sizeof(buff),0);//阻塞发送recv(oldfd,buff,sizeof(buff),0);//阻塞接收printf("收到服务器的消息：%s\n",buff);}close(oldfd);return 0;
}

广播发送接收端

广播发送端：采用setsockopt 设置网络属性，为允许广播

#include <myhead.h>
#define SENDPORT 6666
#define SENDIP "192.168.0.255"//广播IP地址int main(int argc, const char *argv[])
{//1、创建套接字int oldfd = socket(AF_INET,SOCK_DGRAM,0);if(oldfd==-1){perror("socket");return -1;}//2、设置套接字允许广播int k=2;if(setsockopt(oldfd,SOL_SOCKET,SO_BROADCAST,&k,sizeof(k))==-1){perror("setsockopt");return -1;}printf("设置允许广播成功\n");struct sockaddr_in send = {.sin_family = AF_INET,.sin_port = htons(SENDPORT),.sin_addr.s_addr = inet_addr(SENDIP)};struct sockaddr_in rec;int reclen = sizeof(rec);char buff[1024];//3、发送信息while(1){memset(buff,0,sizeof(buff));sleep(5);strcat(buff,"/successful");sendto(oldfd,buff,sizeof(buff),0,(struct sockaddr *)&send,sizeof(send));printf("发送成功\n");}close(oldfd);//关闭套接字return 0;
}

广播接收端：

#include <myhead.h>
#define SENDPORT 6666
#define SENDIP "192.168.0.255"//广播IP地址
int main(int argc, const char *argv[])
{
//1、创建套接字int oldfd = socket(AF_INET,SOCK_DGRAM,0);if(oldfd==-1){perror("socket");return -1;}
//绑定struct sockaddr_in rec = {.sin_family = AF_INET,.sin_port = htons(SENDPORT),.sin_addr.s_addr = inet_addr(SENDIP)};if(bind(oldfd,(struct sockaddr *)&ree,sizeof(ree))==-1){perror("bind");return -1;}char buff[1024];while(1){bzero(buff,sizeof(buff));recvfrom(oldfd,buff,sizeof(buff),0,NULL,NULL);//接收消息printf("%s\n",buff);strcat(buff,"/suc");sendto(oldfd,buff,sizeof(buff),0,(struct sockaddr *)&rec,sizeof(rec));printf("发送成功\n");}return 0;