本人基础较弱,最近做一个关于socket多线程的东西,网上各种找资料,好多都不能用,最后修修补补终于整理出一版发下代码,也作为自己的记录。不对代码做详细的介绍,亲自运行测试,可以直接运行。代码引用了好多,不记得出处了,有重复的见谅。
编译命令 g++ server.cpp -o server -lpthread
server端:
#include <stdio.h> //for printf
#include <stdlib.h> //for exit
#include <string.h> //for bzero
#include <unistd.h> //for usleep
#include <netinet/in.h> //for sockaddr_in
#include <sys/types.h> //for socket
#include <sys/socket.h> //for socket
#include <sys/stat.h>
#include <pthread.h> //for thread
#include <arpa/inet.h>
int server_sockfd = -1;//服务器端套接字
int client_sockfd = -1;//客户端套接字
pthread_t server_Listening_Thread;
pthread_t print_Test_Thread;
pthread_t recv_data_thread;
void * Server_Socket_Listening_Fun(void * server_sock)
{
int len;
struct sockaddr_in remote_addr; //客户端网络地址结构体
socklen_t sin_size;
sin_size=sizeof(struct sockaddr_in);
while(1)
{
/*等待客户端连接请求到达*/
if((client_sockfd=accept(server_sockfd,(struct sockaddr *)&remote_addr,&sin_size))<0)
{
perror("accept");
//return 1;
}
printf("accept client %s
",inet_ntoa(remote_addr.sin_addr));
len=send(client_sockfd,"Welcome to my server
",21,0);//发送欢迎信息
/*接收客户端的数据并将其发送给客户端--recv返回接收到的字节数,send返回发送的字节数*/
}
close(server_sockfd);
return server_sock;
}
void* Recv_Data(void * client_sock)
{
char buf[BUFSIZ]; //数据传送的缓冲区
while(1)
{
if(client_sockfd != -1)
{
int len;
while((len=recv(client_sockfd,buf,BUFSIZ,0))>0)
{
buf[len]=' ';
printf("%s
",buf);
if(send(client_sockfd,buf,len,0)<0)
{
perror("write");
//return 1;
}
}
close(client_sockfd);
}
usleep(100000);
}
return client_sock;
}
void * Print_Test(void * cmd)
{
char * string = (char *)cmd;
printf("The string is : %s ",string);
return cmd;
}
int main(int argc, char *argv[])
{
struct sockaddr_in my_addr; //服务器网络地址结构体
memset(&my_addr,0,sizeof(my_addr)); //数据初始化--清零
my_addr.sin_family=AF_INET; //设置为IP通信
my_addr.sin_addr.s_addr=INADDR_ANY;//服务器IP地址--允许连接到所有本地地址上
my_addr.sin_port=htons(4000); //服务器端口号
/*创建服务器端套接字--IPv4协议,面向连接通信,TCP协议*/
if((server_sockfd=socket(PF_INET,SOCK_STREAM,0))<0)
{
perror("socket");
return 1;
}
{
int opt = 1;
setsockopt(server_sockfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof (opt));
}
/*将套接字绑定到服务器的网络地址上*/
if (bind(server_sockfd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))<0)
{
perror("bind");
return 1;
}
/*监听连接请求--监听队列长度为5*/
listen(server_sockfd,5);
int pthread_Err = pthread_create(&server_Listening_Thread,NULL,Server_Socket_Listening_Fun,(void *)&server_sockfd);
if (pthread_Err != 0)
{
printf("Create thread Failed!
");
return EXIT_FAILURE;
}
else
{
printf("Create Thread Success!!!
");
}
pthread_Err = pthread_create(&recv_data_thread,NULL,Recv_Data,(void *)&client_sockfd);
while(1)
usleep(4000);
return 0;
}
Client端代码:
#include <stdio.h> //for printf
#include <stdlib.h> //for exit
#include <string.h> //for bzero
#include <unistd.h> //for usleep
#include <netinet/in.h> //for sockaddr_in
#include <sys/types.h> //for socket
#include <sys/socket.h> //for socket
#include <sys/stat.h>
#include <pthread.h> //for thread
#include <arpa/inet.h>
int main(int argc, char *argv[])
{
int client_sockfd;
int len;
struct sockaddr_in remote_addr; //服务器端网络地址结构体
char buf[BUFSIZ]; //数据传送的缓冲区
memset(&remote_addr,0,sizeof(remote_addr)); //数据初始化--清零
remote_addr.sin_family=AF_INET; //设置为IP通信
remote_addr.sin_addr.s_addr=inet_addr("127.0.0.1");//服务器IP地址
remote_addr.sin_port=htons(4000); //服务器端口号
/*创建客户端套接字--IPv4协议,面向连接通信,TCP协议*/
if((client_sockfd=socket(PF_INET,SOCK_STREAM,0))<0)
{
perror("socket");
return 1;
}
/*将套接字绑定到服务器的网络地址上*/
if(connect(client_sockfd,(struct sockaddr *)&remote_addr,sizeof(struct sockaddr))<0)
{
perror("connect");
return 1;
}
printf("connected to server
");
len=recv(client_sockfd,buf,BUFSIZ,0);//接收服务器端信息
buf[len]=' ';
printf("%s",buf); //打印服务器端信息
/*循环的发送接收信息并打印接收信息--recv返回接收到的字节数,send返回发送的字节数*/
while(1)
{
printf("Enter string to send:
");
scanf("%s",buf);
if(!strcmp(buf,"quit"))
break;
len=send(client_sockfd,buf,strlen(buf),0);
len=recv(client_sockfd,buf,BUFSIZ,0);
buf[len]=' ';
printf("received:%s
",buf);
}
close(client_sockfd);//关闭套接字
return 0;
}