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十八、TCP多线程、多进程并发服务器

news 来源：原创 2025/5/26 3:45:30

1、TCP多线程并发服务器

服务端：
#include<stdio.h>
#include <arpa/inet.h>
#include<stdlib.h>
#include<string.h>
#include <sys/types.h>          /* See NOTES */
#include <sys/socket.h>
#include <pthread.h>
#include <strings.h>
#define QUIT_STR "QUIT"
#define SERV_IP 5001
#define SERV_IP_ADDR "192.168.238.128" 
#define bufsize 1024
void* cilent_data_handle(void* arg)
{
	int newfd=*(int *)arg;
  char buf[bufsize];
  printf("thread handle:newfd = %d\n",newfd);
        int ret =-1;
        while(1)
        {
                do
                {
                        bzero(buf,bufsize);
                        ret=read(newfd,buf,bufsize-1);
                }while(ret<1);
                if(ret<0)
                {
                        exit(1);
                }
                if(!ret)
                {
                   break;
                }
                printf("recive data is %s\n",buf);
                if(!strncasecmp(buf,QUIT_STR,strlen(QUIT_STR)))
                                {
                                    printf("cilenr is exiting!\n");
                                    break;
                                    }
        }
        close(newfd);


}
int main()
{
	int fd=-1;
	fd=socket(AF_INET,SOCK_STREAM,0);
	if(fd == -1)
	{
		perror("socket");
			exit(1);
	}
	struct sockaddr_in sin;
	bzero(&sin,sizeof(sin));
	sin.sin_family=AF_INET;
	sin.sin_port = htons(SERV_IP);
	sin.sin_addr.s_addr = INADDR_ANY;
/*	if(inet_pton(AF_INET,SERV_IP_ADDR,(void*)&sin.sin_addr.s_addr)!=1)
	{
		perror("inet_pton");
		exit(1);
	}
	*/
	//2.bind
        if(bind(fd,(struct sockaddr *)&sin,sizeof(sin))<0)
	{
	   perror("bind");
	   exit(1);	   
	}
	//3.listen
	if(listen(fd,5)<0)
	{
		perror("listen");
		exit(1);
	}
	//4.accep
         int newfd=-1;
	 pthread_t tid;
	 struct sockaddr_in cin;
	 socklen_t addrlen=sizeof(cin);
	 while(1)
        {
	newfd= accept(fd,(struct sockaddr*)&cin,&addrlen);
	if(newfd<0)
	{
		perror("accept");
		exit(1);
	}
	char IPV4_addr[16];
	if(!inet_ntop(AF_INET,(void *)&cin.sin_addr,IPV4_addr,sizeof(cin)))
	{
		perror("inet_ntop");
		exit(1);
	}
	printf("cilent:(%s,%d)is connect\n",IPV4_addr,ntohs(cin.sin_port));
        pthread_create(&tid,NULL,cilent_data_handle,(void *)&newfd);
	}
	//read


	return 0;
}

客户端：
#include<stdio.h>
#include <arpa/inet.h>
#include<stdlib.h>
#include<string.h>
#include <sys/types.h>          /* See NOTES */
#include <sys/socket.h>
#include <strings.h>
#define QUIT_STR "QUIT"
#define SERV_IP 5001
#define SERV_IP_ADDR "192.168.238.128" 
#define bufsize 1024
int main(int arc,void **arg)
{
	if(arc!=3)
	{
		exit(1);
	}
	int port =-1;
	port=atoi(arg[2]);
	int fd=-1;
	fd = socket(AF_INET,SOCK_STREAM,0);
	if(fd == -1)
	{
		perror("socket");
		exit(1);
	}
	struct sockaddr_in sin;
	bzero(&sin,sizeof(sin));
	sin.sin_family = AF_INET;
	sin.sin_port=htons(port);
	sin.sin_addr.s_addr=inet_addr(arg[1]);
	if(connect(fd,(struct sockaddr*)&sin,sizeof(sin))==-1)
	{
		perror("connect");
		
		exit(1);
	}
	char buf[bufsize];
	while(1)
	{
		bzero(buf,strlen(buf));
		if(fgets(buf,bufsize-1,stdin)==NULL)
		{
		    continue;
		}
		write(fd,buf,strlen(buf));
		if(!strncasecmp(buf,QUIT_STR,strlen(QUIT_STR)))
		{
			break;
		}
		
	}
close(fd);

	return 0;
}

代码示例：

2、TCP多进程并发服务器

服务端
#include<stdio.h>
#include <arpa/inet.h>
#include<stdlib.h>
#include<string.h>
#include <sys/types.h>          /* See NOTES */
#include <sys/socket.h>
#include <pthread.h>
#include <strings.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <unistd.h>
#define QUIT_STR "QUIT"
#define SERV_RESP_STR "SERVER:"
#define SERV_IP 5001
#define SERV_IP_ADDR "192.168.238.128" 
#define bufsize 1024
void child_data_handle(int signum)
{
	if(SIGCHLD==signum)
	{
		waitpid(-1,NULL,WNOHANG);
	}
}
void* cilent_data_handle(void* arg)
{
	int newfd=*(int *)arg;

  char buf[bufsize];
  printf("child process handle:newfd = %d\n",newfd);
        int ret =-1;
        while(1)
        {
                do
                {
                        bzero(buf,bufsize);
                        ret=read(newfd,buf,bufsize-1);
                }while(ret<1);
                if(ret<0)
                {
                        exit(1);
                }
                if(!ret)
                {
                   break;
                }
                printf("recive data is %s\n",buf);

                if(!strncasecmp(buf,QUIT_STR,strlen(QUIT_STR)))
                                {
                                    printf("cilenr is exiting!\n");
                                    break;
                                    }
        }
        close(newfd);


}
int main()
{
	int fd=-1;
	signal(SIGCHLD,child_data_handle);
	fd=socket(AF_INET,SOCK_STREAM,0);
	if(fd == -1)
	{
		perror("socket");
			exit(1);
	}
	struct sockaddr_in sin;
	bzero(&sin,sizeof(sin));
	sin.sin_family=AF_INET;
	sin.sin_port = htons(SERV_IP);
	sin.sin_addr.s_addr = INADDR_ANY;
/*	if(inet_pton(AF_INET,SERV_IP_ADDR,(void*)&sin.sin_addr.s_addr)!=1)
	{
		perror("inet_pton");
		exit(1);
	}
	*/
	//2.bind
        if(bind(fd,(struct sockaddr *)&sin,sizeof(sin))<0)
	{
	   perror("bind");
	   exit(1);	   
	}
	//3.listen
	if(listen(fd,5)<0)
	{
		perror("listen");
		exit(1);
	}
	//4.accep
         int newfd=-1;
	 pthread_t tid;
	 pid_t pid;
	 struct sockaddr_in cin;
	 socklen_t addrlen=sizeof(cin);
	 while(1)
        {

	newfd= accept(fd,(struct sockaddr*)&cin,&addrlen);
	if(newfd<0)
	{
		perror("accept");
		exit(1);
	}
        pid = fork();
	if(pid<0)
	{
		perror("fork");
		break;
	}
	if(pid == 0)
	{
	char IPV4_addr[16];
	if(!inet_ntop(AF_INET,(void *)&cin.sin_addr,IPV4_addr,sizeof(cin)))
	{
		perror("inet_ntop");
		exit(1);
	}
	printf("cilent:(%s,%d)is connect\n",IPV4_addr,ntohs(cin.sin_port));
	cilent_data_handle(&newfd);
        close(fd);
	}
	if(pid >0)
	{
	   close(newfd);
	}
	}
	//read


	return 0;
}


客户端：
#include<stdio.h>
#include <arpa/inet.h>
#include<stdlib.h>
#include<string.h>
#include <sys/types.h>          /* See NOTES */
#include <sys/socket.h>
#include <strings.h>
#define QUIT_STR "QUIT"
#define SERV_IP 5001
#define SERV_IP_ADDR "192.168.238.128" 
#define bufsize 1024
int main(int arc,void **arg)
{
	if(arc!=3)
	{
		exit(1);
	}
	int port =-1;
	port=atoi(arg[2]);
	int fd=-1;
	fd = socket(AF_INET,SOCK_STREAM,0);
	if(fd == -1)
	{
		perror("socket");
		exit(1);
	}
	struct sockaddr_in sin;
	bzero(&sin,sizeof(sin));
	sin.sin_family = AF_INET;
	sin.sin_port=htons(port);
	sin.sin_addr.s_addr=inet_addr(arg[1]);
	if(connect(fd,(struct sockaddr*)&sin,sizeof(sin))==-1)
	{
		perror("connect");
		
		exit(1);
	}
	char buf[bufsize];
	while(1)
	{
		bzero(buf,strlen(buf));
		if(fgets(buf,bufsize-1,stdin)==NULL)
		{
		    continue;
		}
		write(fd,buf,strlen(buf));
		if(!strncasecmp(buf,QUIT_STR,strlen(QUIT_STR)))
		{
			break;
		}
		
	}
close(fd);

	return 0;
}

运行结果：