//服务器


#include <stdio.h>



#include <stdlib.h>



#include <sys/types.h>



#include <sys/socket.h>



#include <netinet/in.h>



#include <arpa/inet.h>



#define MY_PORT 155228



int readfilewords(char readfile[65536]);



int getnumberofwords(char readfile[63335]);



void main()



{



    char *buffer1="connect to server successful!";



    char buffer2[1024]="no client connected to server!";



    char buffer3[65536]="\0";



    char buffer4[1024]="\0";



    int bytes_recvd;



    int m,n;



    //WSADATA wsaData;



    //WSAStartup(MAKEWORD(1,1),&wsaData);



    struct sockaddr_in my_addr;



    my_addr.sin_family = AF_INET;



    my_addr.sin_port = htons(MY_PORT);//htons:将主机的无符号短整型数字节顺序转换成网络字节顺序



    my_addr.sin_addr.s_addr = htonl(INADDR_ANY);//htonl:将主机的无符合长整型数字节顺序转换成网络字节顺序。



    int listen_sock, new_sock;



    listen_sock = socket(AF_INET, SOCK_STREAM, 0);



    //根据指定的地址族、数据类型和协议来生成一个套接字的描述字(listen_sock )



    //地址描述:AP_INET,指定socket类型：SOCK_STREAM,函数返回值为整型socket描述符。



    bind(listen_sock, (struct sockaddr *)&my_addr, sizeof(struct sockaddr));//将一个套接字和一个本地地址与绑定在一起



    //listen_sock:socket描述符,(struct sockaddr *)&my_addr:指向sockaddr类型的指针



    listen(listen_sock, 5);



    //5:在请求队列中允许的最大请求数为5



    while(1)



    {



        new_sock = accept(listen_sock, NULL, NULL);



        //listen_sock:被监听的socket描述符







        send(new_sock, buffer1, strlen(buffer1), 0);



        //new_sock:用于传输数据的socket描述符,buffer:是一个指向要发送数据的指针,strlen(buffer):以字节为单位的数据的长度。





        bytes_recvd = recv(new_sock, buffer2, sizeof(buffer2), 0);



        printf("Server received message(%d bytes): %s\n", bytes_recvd, buffer2);



        memset(buffer3, 0, sizeof(buffer3));



        bytes_recvd = recv(new_sock, buffer3, sizeof(buffer3), 0);



        m=getnumberofwords(buffer3);



        memset(buffer4, 0, sizeof(buffer4));



        sprintf(buffer4,"%d",m);



        send(new_sock, buffer4, strlen(buffer4), 0);



    }



close(new_sock);



close(listen_sock);



//WSACleanup();

}







int getnumberofwords(char readfile[65536])

{

    int i,n=0,flag=1;

    for(i = 0; readfile[i]; i ++)

    {

        if(flag == 1)

        {

            if(readfile[i] != ' ')

            {

                n++;

                flag = 0;

            }

        }

        else if(readfile[i] == ' ')

            flag = 1;

    }

    return n;

}