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2019-2020-1 20175218 实验三并发程序

一、实验内容

1、并发程序-1

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
上方提交代码
附件提交测试截图，至少要测试附件中的两个文件

2、并发程序-2

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

3、并发程序-3

交叉编译多线程版本服务器并部署到实验箱中
PC机作客户端测试wc服务器
提交测试截图

二、实验步骤

1、并发程序-1

通过 man -k wc 了解wc的相关命令，得知，有命令wc(1)。

通过 man 1 wc ，学习使用Linux命令wc(1)。

使用 wc -w test1.txt 和 wc -w test2.txt 命令查看两个文件的单词数。

代码实现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。

代码实现

server.c

#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

#define SERVER_PORT 175218
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512

int main(void)
{
    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);
    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));
    if(-1 == (bind(server_socket_fd, (struct sockaddr*)&server_addr, sizeof(server_addr))))
    {
        perror("Server Bind Failed:");
        exit(1);
    }
    if(-1 == (listen(server_socket_fd, LENGTH_OF_LISTEN_QUEUE)))
    {
        perror("Server Listen Failed:");
        exit(1);
    }
    
    while(1)
    {
        struct sockaddr_in client_addr;
        socklen_t client_addr_length = sizeof(client_addr);
        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;
        }
        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;
        }
        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
", file_name);
        FILE *fp = fopen(file_name, "w");
        if(NULL == fp)
        {
            printf("File:	%s Can Not Open To Write
", file_name);
            exit(1);
        }
        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:	%s Write Failed
", file_name);
                break;
            }
            bzero(buffer, BUFFER_SIZE);
        }
        printf("Receive %s successful!
", file_name);
        fclose(fp);
        int words=0;
        char s[1000];
        FILE *fp2;
        if((fp2=fopen(file_name,"r"))==NULL){
            printf("ERROR!
");
            exit(0);
        }
        while(fscanf(fp2,"%s",s)!=EOF)
            words++;
        fclose(fp2);
        sprintf(buffer,"%d",words);
        send(new_server_socket_fd,buffer,BUFFER_SIZE,0);
        close(new_server_socket_fd);
    }
    close(server_socket_fd);
    return 0;
}

client.c

#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

#define SERVER_PORT 175218
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512

int main()
{
    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);
    int client_socket_fd = socket(AF_INET, SOCK_STREAM, 0);
    if(client_socket_fd < 0)
    {
        perror("Create Socket Failed:");
        exit(1);
    }
    if(-1 == (bind(client_socket_fd, (struct sockaddr*)&client_addr, sizeof(client_addr))))
    {
        perror("Client Bind Failed:");
        exit(1);
    }
    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);
    if(connect(client_socket_fd, (struct sockaddr*)&server_addr, server_addr_length) < 0)
    {
        perror("Can Not Connect To Server IP:");
        exit(0);
    }
    char file_name[FILE_NAME_MAX_SIZE+1];
    bzero(file_name, FILE_NAME_MAX_SIZE+1);
    printf("Please Input File Name On Client:	");
    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));
    if(send(client_socket_fd, buffer, BUFFER_SIZE, 0) < 0)
    {
        perror("Send File Name Failed:");
        exit(1);
    }
    FILE *fp = fopen(file_name, "r");
    if(NULL == fp)
    {
        printf("File:%s Not Found
", file_name);
    }
    else
    {
        bzero(buffer, BUFFER_SIZE);
        int length = 0;
        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);
        }
        fclose(fp);
        printf("Transfer file %s successful!
", file_name);
        send(client_socket_fd,"OK",BUFFER_SIZE,0);
        recv(client_socket_fd,buffer,BUFFER_SIZE,0);
        printf("%d
",atoi(buffer));
    }
    
    close(client_socket_fd);
    return 0;
}

码云链接：

并发程序-1

2、并发程序-2

客户端代码可以沿用上面实验的，只需要修改服务器端代码即可。
将 exp1 的 client.c 代码复制到 exp2 中作 client.c 的代码
编写 exp2 的服务器端代码 server.c 。增加多线程以及使用同步互斥。
代码实现

server.c

#include<netinet/in.h>   
#include<sys/types.h>   
#include<sys/socket.h>   
#include<stdio.h>   
#include<stdlib.h>   
#include<string.h>   
#include<pthread.h>  
#define HELLO_WORLD_SERVER_PORT    175218  
#define LENGTH_OF_LISTEN_QUEUE     20  
#define BUFFER_SIZE                1024  
#define FILE_NAME_MAX_SIZE         512  
void *process_client(void *new_server_socket);
int mywc(char file_name[])
{
    char ch;
    int flag=0,num=0;
    int choose;
    FILE *fp;
    printf("统计单词个数还是实现“wc -w”?(1or2)
");
    scanf("%d",&choose);
    if((fp = fopen(file_name,"r"))==NULL)
    {
        printf("Failure to open %s
",file_name);
        exit(0);
    }

    if(choose==1)
    {
    while((ch=fgetc(fp))!=EOF)
    {
        if(ch==' ' || ch=='
' || ch=='	' ||  ch=='!' || ch=='?' || ch=='"' || ch=='.' || ch== '\,' || ch==':' || ch=='(' || ch==')' || ch==';' || ch=='-')
        {
            flag=0;
        }
        else
        {
            if(flag==0)
            {
                flag=1;
                num++;
            }

        }
                   
    }

    }
    else if(choose==2)
    {
        while((ch=fgetc(fp))!=EOF)
        {
            if(ch==' ' || ch=='
' || ch=='	' || ch=='
')
                flag=0;
            else
            {
                if(flag==0)
                {
                    flag=1;
                    num++;
                }
            }
        }
    }
    printf("单词个数为：%d
",num);
    fclose(fp);
    return num;
}
int main(int argc, char **argv)  
{  
    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(HELLO_WORLD_SERVER_PORT);  
    int server_socket = socket(PF_INET, SOCK_STREAM, 0);  
    if (server_socket < 0)  
    {  
        printf("Create Socket Failed!
");  
        exit(1);  
    }  

    if (bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)))  
    {  
        printf("Server Bind Port: %d Failed!
", HELLO_WORLD_SERVER_PORT);  
        exit(1);  
    }  

    if (listen(server_socket, LENGTH_OF_LISTEN_QUEUE))  
    {  
        printf("Server Listen Failed!
");  
        exit(1);  
    }  
      
    while(1)
    {
        struct sockaddr_in client_addr;  
        socklen_t length = sizeof(client_addr);  


        int new_server_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length);  
        printf("连接到客户端
");
        if (new_server_socket < 0)  
        {  
            printf("Server Accept Failed!
");  
              
        }
        pthread_t pid;
        if(pthread_create(&pid, NULL, process_client,(void *) &new_server_socket) < 0){
              printf("pthread_create error
");
        }
        
    }
}
void *process_client(void *new_server_socket)
{
        int sockid=*(int *)new_server_socket;
        FILE *fp;
        char buffer[BUFFER_SIZE]; 
        char file_name[FILE_NAME_MAX_SIZE];
        bzero(buffer, sizeof(buffer));  
        int length=0;
        if(recv(sockid,buffer,BUFFER_SIZE, 0)==-1)
        {
            printf("接受文件名%s失败
",buffer);
        }
        strcpy(file_name,buffer);
        strcat(file_name,"-server");
        if((fp = fopen(file_name,"w"))==NULL)
        {
            printf("Failure to open %s
",file_name);
            exit(0);
        }
        while( length = recv(sockid, buffer, BUFFER_SIZE, 0))
        {
            if(length<0)
            {
                printf("接受文件出错
");
                exit(0);
            }
            
            if(fwrite(buffer,sizeof(char),length,fp)<length)
            {
                printf("写文件失败
");
            }
            bzero(buffer, BUFFER_SIZE);
        }
        fclose(fp);
        printf("接受文件完毕
");
        int number=0;
        number=mywc(file_name);
        bzero(buffer, BUFFER_SIZE);  
        buffer[0]=number+48;
 
     
        bzero(buffer, sizeof(buffer));  
        

        printf("File Transfer Finished!
");    
        close(new_server_socket);  
}

client.c

#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h> 
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
  
#define HELLO_WORLD_SERVER_PORT       175218  
#define BUFFER_SIZE                   1024  
#define FILE_NAME_MAX_SIZE            512  
int mywc(char file_name[],int choose);
int main(int argc, char **argv)  
{  
    FILE *fp;
    if (argc != 2)  
    {  
        printf("Usage: ./%s ServerIPAddress
", argv[0]);  
        exit(1);  
    }  

    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);
    int client_socket = socket(AF_INET, SOCK_STREAM, 0);  
    if (client_socket < 0)  
    {  
        printf("Create Socket Failed!
");  
        exit(1);  
    }  

    if (bind(client_socket, (struct sockaddr*)&client_addr, sizeof(client_addr)))  
    {  
        printf("Client Bind Port Failed!
");  
        exit(1);  
    }  

    struct sockaddr_in  server_addr;  
    bzero(&server_addr, sizeof(server_addr));  
    server_addr.sin_family = AF_INET;  
    if (inet_aton(argv[1], &server_addr.sin_addr) == 0)  
    {  
        printf("Server IP Address Error!
");  
        exit(1);  
    }                                                                                                               
    server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);  
    socklen_t server_addr_length = sizeof(server_addr);  
    if (connect(client_socket, (struct sockaddr*)&server_addr, server_addr_length) < 0)  
    {  
        printf("Can Not Connect To %s!
", argv[1]);  
        exit(1);  
    }  

    char file_name[FILE_NAME_MAX_SIZE + 1];  
    bzero(file_name, sizeof(file_name));  
    printf("Please Input File Name.	");  
    scanf("%s", file_name);  
    if((fp = fopen(file_name,"r"))==NULL)
    {
         printf("Failure to open %s
",file_name);
         exit(0);
    }
    
    char buffer[BUFFER_SIZE];  
    bzero(buffer, sizeof(buffer));  
    strcpy(buffer,file_name);
    if(send(client_socket,buffer,BUFFER_SIZE,0)==-1)
    {
        printf("发送文件名失败
");
    }
    char ch;
    int i=0;
    while((ch=fgetc(fp))!=EOF)
    {
        buffer[i++]=ch;
        if(i>=BUFFER_SIZE)
        {
            if((send(client_socket, buffer, BUFFER_SIZE, 0))==-1)
            {
                printf("发送文件失败
");
            }
            bzero(buffer, sizeof(buffer));
            i=0;
        }
    }
    if(i<BUFFER_SIZE)
    {
        if((send(client_socket, buffer, i, 0))==-1)
        {
            printf("发送文件失败
");
        }
    }
    printf("发送%s完毕
",file_name);
    mywc(file_name,1);
     mywc(file_name,2);
    bzero(buffer, sizeof(buffer));

    fclose(fp);  
    close(client_socket);  
    return 0;  

}  
 int mywc(char file_name[],int choose)
  {
       FILE *fp;
       char ch;
        int flag=0,num=0;
       
            if((fp = fopen(file_name,"r"))==NULL)
             {
                  printf("Failure to open %s
",file_name);
                   exit(0);
                }
             
                  if(choose==1)
                   {
                    while((ch=fgetc(fp))!=EOF)
                     {
                          if(ch==' ' || ch=='
' || ch=='	' ||  ch=='!' || ch=='?' || ch=='"' || ch=='.' || ch== '\,' || ch==':' || ch=='(' || ch==')' || ch==';'     || ch=='-')
                          {
                          flag=0;
                          }
                          else
                          {
                          if(flag==0)
                          {
                          flag=1;
                          num++;
                          }
                          
                          }

                    }

                }
                else if(choose==2)
                {
                    while((ch=fgetc(fp))!=EOF)
                    {
                        if(ch==' ' || ch=='
' || ch=='	' || ch=='
')
                        flag=0;
                        else
                        {
                            if(flag==0)
                            {
                                flag=1;
                                num++;
                            }
                        }
                    }
                }
                printf("单词个数为：%d_用方式%d计算
",num,choose);
                fclose(fp);
                return num;
}

代码实现功能

码云链接：

并发程序-2

3、并发程序-3

三、实验中遇到的问题及解决方法

问题：

还是遇到了实验一时的麻烦，很难ping通虚拟机和实验箱。

解决方法：

再更换了几个实验箱之后，还是无法ping通。就借用其他同学ping通了的电脑完成实验。

四、实验感想

通过这次实验，让我学会了如何用C语言在 linux 中搭建服务器端与客户端的联系，并且实现 wc 命令功能。实现了单线程和多线程两种不同版本的联系。在第三个实验还复习了第一个实验，复习到了通过超级终端实现电脑虚拟机与实验箱的联系搭建。

五、参考资料

1.实验指导

2.Arm实验箱实验环境

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原文地址：https://www.cnblogs.com/cjy-123/p/11881821.html

2019-2020-1 20175218 实验三 并发程序

2019-2020-1 20175218 实验三 并发程序

一、实验内容

1、并发程序-1

2、并发程序-2

3、并发程序-3

二、实验步骤

1、并发程序-1

2、并发程序-2

3、并发程序-3

三、实验中遇到的问题及解决方法

四、实验感想

五、参考资料

2019-2020-1 20175218 实验三并发程序

2019-2020-1 20175218 实验三并发程序