20165217第三次实验报告

实验一

学习使用Linux命令wc(1)基于Linux Socket程序设计实现wc，（1）服务器(端口号是你学号的后6位)和客户端，客户端传一个文本文件给服务器，服务器返加文本文件中的单词数

代码展示 serve.c

#include<netinet/in.h>  // sockaddr_in  
#include<sys/types.h>   // socket  
#include<sys/socket.h>  // socket  
#include<stdio.h>       // printf  
#include<stdlib.h>      // exit  
#include<string.h>      // bzero  

#define SERVER_PORT 165217  
#define LENGTH_OF_LISTEN_QUEUE 20  
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512  

int main(void)  
{  
    // 声明并初始化一个服务器端的socket地址结构  
    struct sockaddr_in server_addr;  
    bzero(&server_addr, sizeof(server_addr));  
    server_addr.sin_family = AF_INET;  
    server_addr.sin_addr.s_addr = htons(INADDR_ANY);  
    server_addr.sin_port = htons(SERVER_PORT);  

    // 创建socket，若成功，返回socket描述符  
    int server_socket_fd = socket(PF_INET, SOCK_STREAM, 0);  
    if(server_socket_fd < 0)  
    {  
        perror("Create Socket Failed:");  
        exit(1);  
    }  
    int opt = 1;  
    setsockopt(server_socket_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));  

    // 绑定socket和socket地址结构  
    if(-1 == (bind(server_socket_fd, (struct sockaddr*)&server_addr, sizeof(server_addr))))  
    {  
        perror("Server Bind Failed:");  
        exit(1);  
    }  

    // socket监听  
    if(-1 == (listen(server_socket_fd, LENGTH_OF_LISTEN_QUEUE)))  
    {  
        perror("Server Listen Failed:");  
        exit(1);  
    }  

    while(1)  
    {  
        // 定义客户端的socket地址结构  
        struct sockaddr_in client_addr;  
        socklen_t client_addr_length = sizeof(client_addr);  

        // 接受连接请求，返回一个新的socket(描述符)，这个新socket用于同连接的客户端通信  
        // accept函数会把连接到的客户端信息写到client_addr中  
        int new_server_socket_fd = accept(server_socket_fd, (struct sockaddr*)&client_addr, &client_addr_length);  
        if(new_server_socket_fd < 0)  
        {  
            perror("Server Accept Failed:");  
            break;  
        }  

       // recv函数接收数据到缓冲区buffer中  
        char buffer[BUFFER_SIZE];  
        bzero(buffer, BUFFER_SIZE);  
        if(recv(new_server_socket_fd, buffer, BUFFER_SIZE, 0) < 0)  
        {  
            perror("Server Recieve Data Failed:");  
            break;  
        }  

        // 然后从buffer(缓冲区)拷贝到file_name中  
        char file_name[FILE_NAME_MAX_SIZE+1];  
        bzero(file_name, FILE_NAME_MAX_SIZE+1);  
        strncpy(file_name, buffer, strlen(buffer)>FILE_NAME_MAX_SIZE?FILE_NAME_MAX_SIZE:strlen(buffer));  
        printf("%s\n", file_name);  

    // 打开文件，准备写入  
        FILE *fp = fopen(file_name, "w");  
        if(NULL == fp)  
        {  
            printf("File:\t%s Can Not Open To Write\n", file_name);  
            exit(1);  
        }  

    // 从客户端接收数据到buffer中  
        // 每接收一段数据，便将其写入文件中，循环直到文件接收完并写完为止  
        bzero(buffer, BUFFER_SIZE);  
        int length = 0;  
        while((length = recv(new_server_socket_fd, buffer, BUFFER_SIZE, 0)) > 0)  
        {  
        if(strcmp(buffer,"OK")==0) break;
            if(fwrite(buffer, sizeof(char), length, fp) < length)  
            {  
                printf("File:\t%s Write Failed\n", file_name);  
                break;  
            }  
            bzero(buffer, BUFFER_SIZE);  
        }  


    // 接收成功后，关闭文件，关闭socket  
        printf("Receive File:\t%s From Client IP Successful!\n", file_name);  
        fclose(fp);


    // 统计文件单词个数，并发送给客户端
    int words=0;
    char s[100];
    FILE *fp2;
    if((fp2=fopen(file_name,"r"))==NULL){
        printf("ERROR!\n");
        exit(0);
    }
    while(fscanf(fp2,"%s",s)!=EOF)
        words++;
    fclose(fp2);
    //printf("%d words.\n",words);


    sprintf(buffer,"%d",words);

    send(new_server_socket_fd,buffer,BUFFER_SIZE,0);

    //send(new_server_socket_fd,&words,sizeof(words),0);
    close(new_server_socket_fd);  



        // 关闭与客户端的连接  

    }  
    // 关闭监听用的socket  
    close(server_socket_fd);  
    return 0;  
} 

client.c

#include<netinet/in.h>   // sockaddr_in 
#include<sys/types.h>    // socket 
#include<sys/socket.h>   // socket 
#include<stdio.h>        // printf 
#include<stdlib.h>       // exit 
#include<string.h>       // bzero 
 
#define SERVER_PORT 165217 
#define BUFFER_SIZE 1024 
#define FILE_NAME_MAX_SIZE 512 
 
int main() 
{ 
    // 声明并初始化一个客户端的socket地址结构 
    struct sockaddr_in client_addr; 
    bzero(&client_addr, sizeof(client_addr)); 
    client_addr.sin_family = AF_INET; 
    client_addr.sin_addr.s_addr = htons(INADDR_ANY); 
    client_addr.sin_port = htons(0); 
 
    // 创建socket，若成功，返回socket描述符 
    int client_socket_fd = socket(AF_INET, SOCK_STREAM, 0); 
    if(client_socket_fd < 0) 
    { 
        perror("Create Socket Failed:"); 
        exit(1); 
    } 
 
    // 绑定客户端的socket和客户端的socket地址结构 非必需 
    if(-1 == (bind(client_socket_fd, (struct sockaddr*)&client_addr, sizeof(client_addr)))) 
    { 
        perror("Client Bind Failed:"); 
        exit(1); 
    } 
 
    // 声明一个服务器端的socket地址结构，并用服务器那边的IP地址及端口对其进行初始化，用于后面的连接 
    struct sockaddr_in server_addr; 
    bzero(&server_addr, sizeof(server_addr)); 
    server_addr.sin_family = AF_INET; 
    if(inet_pton(AF_INET, "127.0.0.1", &server_addr.sin_addr) == 0) 
    { 
        perror("Server IP Address Error:"); 
        exit(1); 
    } 
    server_addr.sin_port = htons(SERVER_PORT); 
    socklen_t server_addr_length = sizeof(server_addr); 
 
    // 向服务器发起连接，连接成功后client_socket_fd代表了客户端和服务器的一个socket连接 
    if(connect(client_socket_fd, (struct sockaddr*)&server_addr, server_addr_length) < 0) 
    { 
        perror("Can Not Connect To Server IP:"); 
        exit(0); 
    } 
 
    // 输入文件名，并放到缓冲区buffer中等待发送 
    char file_name[FILE_NAME_MAX_SIZE+1]; 
    bzero(file_name, FILE_NAME_MAX_SIZE+1); 
 
    printf("Please Input File Name On Client:\t");
    scanf("%s", file_name); 
 
    char buffer[BUFFER_SIZE]; 
    bzero(buffer, BUFFER_SIZE); 
    strncpy(buffer, file_name, strlen(file_name)>BUFFER_SIZE?BUFFER_SIZE:strlen(file_name)); 
 
    // 向服务器发送buffer中的数据 
    if(send(client_socket_fd, buffer, BUFFER_SIZE, 0) < 0) 
    { 
        perror("Send File Name Failed:"); 
        exit(1); 
    } 
 
 
    // 打开文件并读取文件数据 
        FILE *fp = fopen(file_name, "r"); 
        if(NULL == fp) 
        { 
            printf("File:%s Not Found\n", file_name); 
        } 
        else 
        { 
            bzero(buffer, BUFFER_SIZE); 
            int length = 0; 
            // 每读取一段数据，便将其发送给服务器，循环直到文件读完为止 
            while((length = fread(buffer, sizeof(char), BUFFER_SIZE, fp)) > 0) 
            { 
                if(send(client_socket_fd, buffer, length, 0) < 0) 
                { 
                    printf("Send File:%s Failed./n", file_name); 
                    break; 
                } 
                bzero(buffer, BUFFER_SIZE); 
            } 
 
            // 关闭文件 
 
            fclose(fp); 
            printf("File:%s Transfer Successful!\n", file_name); 
        char s[50];
        scanf("%s",s);
        send(client_socket_fd,"OK",BUFFER_SIZE,0);
        recv(client_socket_fd,buffer,BUFFER_SIZE,0);   
        printf("%d words.\n",atoi(buffer));
    } 
 
    close(client_socket_fd); 
    return 0; 
}

任务二

实验要求：
使用多线程实现wc服务器并使用同步互斥机制保证计数正确，上方提交代码，下方提交测试，对比单线程版本的性能，并分析原因

serve2.c

#include <stdio.h>
#include <fcntl.h>
#include <pthread.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
 
#define PORT 165217
#define BUFF_SIZE 1024
#define LISTEN_SIZE 20
typedef struct{
    char type;
    char data[BUFF_SIZE];
}m_package;
 
void* process_client();
 
int main(){
    int ss = create_tcp_server(PORT);
    if(-1 == ss)
        exit(-1);
    while(1){
        //接受客户端连接
        socklen_t addrlen = sizeof(struct sockaddr);
        struct sockaddr_in client_addr; //客户端地址结构
        int client_sock = accept(ss, (struct sockaddr*)&client_addr, &addrlen);
        if(client_sock < 0){
            printf("accept error\n");
        }
        printf("accept success\n");
 
        pthread_t pid;
        if(pthread_create(&pid, NULL, process_client, &client_sock) < 0){
            printf("pthread_create error\n");
        }
    }
}
 
//处理客户端程序
void *process_client(void *arg){
    int size = 0, fd, count = 0, sockid = *(int*)arg;
    m_package pac;
    long total = 0, cur = 0;
    //循环接收文件
    while(1) {
        memset(&pac, 0, sizeof(pac));
        size = read(sockid, &pac, sizeof(pac));
        if(size > 0){
            if (pac.type == 1){
                fd = open(pac.data, O_CREAT|O_WRONLY, 0777);
                if(-1 == fd){
                    printf("open file error!\n");
                    continue;
                }
                count = total = cur = 0;
            }
            else if (pac.type == 2){
                cur += write(fd, pac.data, strlen(pac.data));
                if(count++ % 5000 == 0){
                    printf("recv from client < %d > : %.01lf\%\n", sockid, cur * 100.0 / total);
                    count = 0;
                }
            }
            else if (pac.type == 3){
                printf("recv from client < %d > : 100.0\%\n", sockid);
                printf("recv success\n");
                close(fd);
            }
            else if(pac.type == 4){//文件长度
                total = strtol(pac.data, NULL, 10);
                printf("%ld\n", total);
            }
        }else{
            printf("client disconnected\n");
            close(sockid);
            break;
        }
    }
    return 0;
}
int start_server(int port, int type){
    //建立服务器套接字
    int ss = socket(AF_INET, type, 0);
    if(ss < 0){
        printf("create socket error\n");
        return -1;
    }
 
    //设置服务器地址
    struct sockaddr_in server_addr; //服务器地址结构
    bzero(&server_addr, sizeof(struct sockaddr_in)); //清零
    server_addr.sin_family = AF_INET; //协议族
    server_addr.sin_addr.s_addr = htonl(INADDR_ANY); //ip地址
    server_addr.sin_port = htons(port); //端口
    //绑定地址结构到套接字描述符
    if(bind(ss, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0){
        printf("bind error\n");
        return -1;
    }
    //TCP
    if(SOCK_STREAM == type){
        //设置侦听
        if(listen(ss, LISTEN_SIZE) < 0){
            printf("listen error\n");
            return -1;
        }
        printf("tcp server start\n");
    }
    else
        printf("udp server start\n");
    return ss;
}
 
int create_tcp_server(int port){
    start_server(port, SOCK_STREAM);
}
 
int create_udp_server(int port){
    start_server(port, SOCK_DGRAM);
}

client2.c

#include <stdio.h>
#include <fcntl.h>
#include <pthread.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#define PORT 165217
#define BUFF_SIZE 1024
#define LISTEN_SIZE 20
typedef struct{
    char type;
    char data[BUFF_SIZE];
}m_package;
 
int main(){
    //创建连接
    int sock_fd = connect_tcp("127.0.0.1", PORT);
    if(-1 == sock_fd)
    return -1;
 
    m_package pac;
    int fd, cur = 0, count = 0;
    long filesize = 0;
    while(1){
        //打开文件
        memset(&pac, 0, sizeof(pac));
        pac.type = 1;
        // strcpy(pac.data, "/home/SKZH/a.txt");
        scanf("%s", pac.data);
        //获取文件信息
        struct stat sfile;
        stat(pac.data, &sfile );
        filesize = sfile.st_size;
        time_t t;
long begin = time(&t);
        cur = count = 0;
 
        fd = open(pac.data, O_RDONLY);
        if(-1 == fd){
            printf("file open error\n");
            continue;
        }
        //读取文件并发送
        //发送文件名
        strcpy(pac.data, strrchr(pac.data, '/') + 1);
        write(sock_fd, &pac, sizeof(pac));
        memset(&pac, 0, sizeof(pac));
 
        //发送文件长度
        pac.type = 4;
        sprintf(pac.data,"%ld",filesize);
        write(sock_fd, &pac, sizeof(pac));
        memset(&pac, 0, sizeof(pac));
 
        int read_len = 0;
        while((read_len = read(fd, pac.data, BUFF_SIZE)) > 0){
            pac.type = 2;
            write(sock_fd, &pac, sizeof(pac));
            memset(&pac, 0, sizeof(pac));
            cur += read_len;
            if(count++% 5000 == 0){
                count = 0;
                printf("send to server : %.1lf\%\n", cur * 100.0 / filesize);
            }
        }
 
        //发送结束标记
        memset(&pac, 3, sizeof(pac));
        write(sock_fd, &pac, BUFF_SIZE + 1);
        close(fd);
 
        printf("send to server : 100.0\%\n");
        printf("file size : %d B\n", filesize);
        printf("time : %ld ms\n", time(&t) - begin);
        printf("send file success\n");
        printf("------------------------\n");
    }
    close(sock_fd);
}
int connectsock(char* server_ip, int server_port, int type){
    int sock_fd = socket(AF_INET, type, 0);
    if(-1 == sock_fd){
        printf("create socket error\n");
        return -1;
    }
 
    struct sockaddr_in server_addr;
    //设置服务器地址
bzero(&server_addr, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    server_addr.sin_port = htons(server_port);
    inet_pton(AF_INET, server_ip, &server_addr.sin_addr);
 
    //连接服务器
    if(-1 == connect(sock_fd, (struct sockaddr*)&server_addr, sizeof(struct sockaddr_in))){
        printf("connect server error\n");
      return -1;
    }
 
    printf("connect server success\n");
    return sock_fd;
}
 
int connect_tcp(char* server_ip, int server_port){
    return connectsock(server_ip, server_port, SOCK_STREAM);
}
 
int connect_udp(char* server_ip, int server_port){
    return connectsock(server_ip, server_port, SOCK_DGRAM);
}