作业
1、多进程多线程并发服务器,再实现一遍(重点模型)
多进程并发服务器
多进程服务器 PIDserver.c 代码
#include <myhead.h>
#define SERPORT 7777
#define SERIP "192.168.19.128"
#define BACKLOG 10
void hande(int sss)
{
if(sss==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);
if(oldfd ==-1)
{
perror("socket");
return -1;
}
//端口号快速复用
int kkk=666;
if(setsockopt(oldfd,SOL_SOCKET,SO_REUSEADDR,&kkk,sizeof(kkk))==-1)
{
printf("setsockopt");
return -1;
}
printf("端口快速复用成功\n");
struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_port = htons(SERPORT),
.sin_addr.s_addr = inet_addr(SERIP)
};
//2、绑定
if(bind(oldfd,(struct sockaddr *)&sin,sizeof(sin))==-1)
{
perror("bind");
return -1;
}
//3、监听
if(listen(oldfd,BACKLOG)==-1)
{
perror("listen");
return -1;
}
//创建子进程,父进程负责接收客户端请求,子进程负责数据收发
struct sockaddr_in cin;
int cinlen = sizeof(cin);
while(1)
{
int newfd = accept(oldfd,(struct sockaddr *)&cin,&cinlen);
if(newfd==-1)
{
perror("accept");
return -1;
}
printf("newfd = %d\n",newfd);
printf("%s:%d连接成功\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));
pid_t pid = fork();//创建子进程
if(pid>0)//父进程
{
//close(newfd);//关闭文件描述符
}
else if(pid==0)//子进程
{
close(oldfd);//关闭旧的文件描述符
char buff[1024];
while(1)
{
int len = recv(newfd,buff,sizeof(buff),0);
if(len==0)
{
printf("客户端退出\n");
break;
}
printf("服务器收到信息:%s\n",buff);
strcat(buff,"^_^");
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;
}
多进程客户端 clinet.c 代码
#include <myhead.h>
#define CLIPORT 7777
#define CLIIP "192.168.19.128"
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");
char buff[1024] = "";
while(1)//4、收发消息
{
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;
}
运行结果:
多线程并发服务器
多线程服务器
#include <myhead.h>
#define SERPORT 6666
#define SERIP "192.168.19.128"
#define BACKLOG 20
typedef struct
{
int newfd;//存储新文件描述符
struct sockaddr_in cin;//存储客户端信息
}HMY;
void *fun1(void *sss)
{
int newfd = ((HMY *)sss)->newfd;
struct sockaddr_in cin = ((HMY *)sss)->cin;//解析客户端信息
char buff[1024];
while(1)
{
bzero(buff,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,"hongmingyuan");//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[])
{
int oldfd = socket(AF_INET,SOCK_STREAM,0);//1、创建套接字
if(oldfd==-1)
{
perror("socket");
return -1;
}
int atao = 8;
if(setsockopt(oldfd,SOL_SOCKET,SO_REUSEADDR,&atao,sizeof(atao))==-1)
{
perror("setsockopt");
return -1;
}
printf("端口号快速复用成功\n");
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)//2、绑定
{
perror("bind");
return -1;
}
if(listen(oldfd,BACKLOG)==-1)//3、监听成功
{
perror("listen");
return -1;
}
printf("监听成功\n");
struct sockaddr_in cin;
int cinlen = sizeof(cin);
HMY MSG;//定义子线程函数的参数
while(1)
{
//accept接收客户端请求
int newfd = accept(oldfd,(struct sockaddr *)&cin,&cinlen);
if(newfd==-1)
{
perror("accept");
return -1;
}
printf("%s:%d发来请求\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));
MSG.newfd = newfd;
MSG.cin = cin;
//创建子线程与客户端通信
pthread_t tid;
if(pthread_create(&tid,NULL,fun1,&MSG)!=0)
{
perror("pthread_create");
return -1;
}
//回收子线程资源
//pthread_join(tid,NULL);//不能使用join回收子线程资源
pthread_detach(tid);//挂起由系统回收
}
//关闭旧的描述符
close(oldfd);
return 0;
}
多线程客户端
#include <myhead.h>
#define CLIPORT 6666
#define CLIIP "192.168.19.128"
int main(int argc, const char *argv[])
{
//1、创建原始套节字
int oldfd = socket(AF_INET,SOCK_STREAM,0);
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");
char buff[1024] = "";
while(1)//4、收发消息
{
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;
}
运行结果:
2、广播发送接收端,自己实现一遍(重点模型)
广播发送接收端
发送端UDPsend.c代码
#include <myhead.h>
#define SENDPORT 6666
#define SENDIP "192.168.19.255"//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 kkk=2;
if(setsockopt(oldfd,SOL_SOCKET,SO_BROADCAST,&kkk,sizeof(kkk))==-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 ree;
int reelen = sizeof(ree);
char buff[1024];
while(1)//3、发送信息
{
bzero(buff,sizeof(buff));
sleep(2);
strcat(buff,"5201314");
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;
}
接收端recv.c代码
#include <myhead.h>
#define SENDPORT 6666
#define SENDIP "192.168.19.255"//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;
}
struct sockaddr_in ree = {
.sin_family = AF_INET,
.sin_port = htons(SENDPORT),
.sin_addr.s_addr = inet_addr(SENDIP)
};
//2、绑定
if(bind(oldfd,(struct sockaddr *)&ree,sizeof(ree))==-1)
{
perror("bind");
return -1;
}
//3、收发消息
char buff[1024];
while(1)
{
bzero(buff,sizeof(buff));
recvfrom(oldfd,buff,sizeof(buff),0,NULL,NULL);
printf("%s\n",buff);
strcat(buff,"^_^");
sendto(oldfd,buff,sizeof(buff),0,(struct sockaddr *)&ree,sizeof(ree));
printf("发送成功\n");
}
return 0;
}
运行结果: