2018-2019 20165222《信息安全系统设计基础》实验三 并发程序
实验三-并发程序-1
任务详情
1:学习使用Linux命令wc(1)
2:基于Linux Socket程序设计实现wc(1)服务器（端口号是学号的后6位）和客户端
客户端传一个文本文件给服务器
服务器返回文本文件中的单词数
3：上传代码并至少测试附件中的二个文件
实验步骤:
使用man -k wc查找相关命令
继续使用man 1 wc查找相关指令
代码展示
client.c
#include <netinet/in.h> // for sockaddr_in
#include <sys/types.h> // for socket
#include <sys/socket.h> // for socket
#include <stdio.h> // for printf
#include <stdlib.h> // for exit
#include <string.h> // for bzero
#include <unistd.h>
/*
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
*/
#define HELLO_WORLD_SERVER_PORT 165222
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
#define FILE_WORDS_NUMBER 32
int main(int argc, char **argv)
{
if (argc != 2)
{
printf("Usage: ./%s ServerIPAddress
",argv[0]);
exit(1);
}
//设置一个socket地址结构client_addr,代表客户机internet地址, 端口
struct sockaddr_in client_addr;
bzero(&client_addr,sizeof(client_addr)); //把一段内存区的内容全部设置为0
client_addr.sin_family = AF_INET; //internet协议族
client_addr.sin_addr.s_addr = htons(INADDR_ANY);//INADDR_ANY表示自动获取本机地址
client_addr.sin_port = htons(0); //0表示让系统自动分配一个空闲端口
//创建用于internet的流协议(TCP)socket,用client_socket代表客户机socket
int client_socket = socket(AF_INET,SOCK_STREAM,0);
if( client_socket < 0)
{
printf("Create Socket Failed!
");
exit(1);
}
//把客户机的socket和客户机的socket地址结构联系起来
if( bind(client_socket,(struct sockaddr*)&client_addr,sizeof(client_addr)))
{
printf("Client Bind Port Failed!
");
exit(1);
}
//设置一个socket地址结构server_addr,代表服务器的internet地址, 端口
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) //服务器的IP地址来自程序的参数
{
printf("Server IP Address Error!
");
exit(1);
}
server_addr.sin_port = htons(HELLO_WORLD_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代表了客户机和服务器的一个socket连接
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, FILE_NAME_MAX_SIZE+1);
printf("Please Input File Name On Server: ");
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
send(client_socket,buffer,BUFFER_SIZE,0);
FILE * fp = fopen(file_name,"r");
if(NULL == fp )
{
printf("File: %s Not Found
", file_name);
exit(1);
}
else
{
bzero(buffer, BUFFER_SIZE);
int file_block_length = 0;
while( (file_block_length = fread(buffer,sizeof(char),BUFFER_SIZE, fp))>0)
{
//printf("file_block_length = %d
",file_block_length);
//发送buffer中的字符串到服务器
if(send(client_socket,buffer,file_block_length,0)<0)
{
printf("Send File: %s Failed
", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}
}
printf("Send File: %s To Server[%s] Finished
",file_name, argv[1]);
printf("The File has %d words.
", wc_func(file_name));
fclose(fp);
//关闭socket
close(client_socket);
return 0;
}
int wc_func(char *file_name)
{
int t;
int w = 0;
int state = 0;
FILE *in;
if((in = fopen(file_name,"r"))==NULL)
{
printf("wc %s:no this file or dir
",file_name);
return;
}
while((t=fgetc(in))!=EOF)
{
if(t=='
'||t==' '||t=='
') {
state = 0;
continue;
} else {
if(state == 0) {
state = 1;
w++;
}
continue;
}
}
return w;
}
serve.c
#include <netinet/in.h> // for sockaddr_in
#include <sys/types.h> // for socket
#include <sys/socket.h> // for socket
#include <stdio.h> // for printf
#include <stdlib.h> // for exit
#include <string.h> // for bzero
#include <unistd.h>
/*
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
*/
#define HELLO_WORLD_SERVER_PORT 165222
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
#define FILE_WORDS_NUMBER 32
int wc_func(char *file_name);
int main(int argc, char **argv)
{
//设置一个socket地址结构server_addr,代表服务器internet地址, 端口
struct sockaddr_in server_addr;
bzero(&server_addr,sizeof(server_addr)); //把一段内存区的内容全部设置为0
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htons(INADDR_ANY);
server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);
//创建用于internet的流协议(TCP)socket,用server_socket代表服务器socket
int server_socket = socket(PF_INET,SOCK_STREAM,0);
if( server_socket < 0)
{
printf("Create Socket Failed!");
exit(1);
}
//把socket和socket地址结构联系起来
if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
{
printf("Server Bind Port : %d Failed!", HELLO_WORLD_SERVER_PORT);
exit(1);
}
//server_socket用于监听
if ( listen(server_socket, LENGTH_OF_LISTEN_QUEUE) )
{
printf("Server Listen Failed!");
exit(1);
}
while (1) //服务器端要一直运行
{
//定义客户端的socket地址结构client_addr
struct sockaddr_in client_addr;
socklen_t length = sizeof(client_addr);
//接受一个到server_socket代表的socket的一个连接
//如果没有连接请求,就等待到有连接请求--这是accept函数的特性
//accept函数返回一个新的socket,这个socket(new_server_socket)用于同连接到的客户的通信
//new_server_socket代表了服务器和客户端之间的一个通信通道
//accept函数把连接到的客户端信息填写到客户端的socket地址结构client_addr中
int new_server_socket = accept(server_socket,(struct sockaddr*)&client_addr,&length);
if ( new_server_socket < 0)
{
printf("Server Accept Failed!
");
break;
}
char file_name[FILE_NAME_MAX_SIZE+1];
bzero(file_name, FILE_NAME_MAX_SIZE+1);
char buffer[BUFFER_SIZE];
bzero(buffer,BUFFER_SIZE);
recv(new_server_socket,file_name,BUFFER_SIZE,0);
FILE * fp = fopen(file_name,"w");
if(NULL == fp )
{
printf("File: %s Can Not Open To Write
", file_name);
exit(1);
}
//从客户端接收数据到buffer中
bzero(buffer,BUFFER_SIZE);
int len = 0;
while( len = recv(new_server_socket,buffer,BUFFER_SIZE,0))
{
if(len < 0)
{
printf("Recieve Data From Client %s Failed!
", argv[1]);
break;
}
int write_length = fwrite(buffer,sizeof(char),len,fp);
if (write_length<len)
{
printf("File: %s Write Failed
", file_name);
break;
}
bzero(buffer,BUFFER_SIZE);
}
printf("File: %s Transfer Finished!
",file_name);
fclose(fp);
//关闭与客户端的连接
close(new_server_socket);
}
//关闭监听用的socket
close(server_socket);
return 0;
}
运行截图
实验三-并发程序-2
任务详情
- 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
代码展示
serve.c
#include<netinet/in.h> // for sockaddr_in
#include<sys/types.h> // for socket
#include<sys/socket.h> // for socket
#include<stdio.h> // for printf
#include<stdlib.h> // for exit
#include<string.h> // for bzero
#define HELLO_WORLD_SERVER_PORT 165222
#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);
}
// 设置一个socket地址结构client_addr, 代表客户机的internet地址和端口
struct sockaddr_in client_addr;
bzero(&client_addr, sizeof(client_addr));
client_addr.sin_family = AF_INET; // internet协议族
client_addr.sin_addr.s_addr = htons(INADDR_ANY); // INADDR_ANY表示自动获取本机地址
client_addr.sin_port = htons(0); // auto allocated, 让系统自动分配一个空闲端口
// 创建用于internet的流协议(TCP)类型socket，用client_socket代表客户端socket
int client_socket = socket(AF_INET, SOCK_STREAM, 0);
if (client_socket < 0)
{
printf("Create Socket Failed!
");
exit(1);
}
// 把客户端的socket和客户端的socket地址结构绑定
if (bind(client_socket, (struct sockaddr*)&client_addr, sizeof(client_addr)))
{
printf("Client Bind Port Failed!
");
exit(1);
}
// 设置一个socket地址结构server_addr,代表服务器的internet地址和端口
struct sockaddr_in server_addr;
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = AF_INET;
// 服务器的IP地址来自程序的参数
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);
// 向服务器发起连接请求，连接成功后client_socket代表客户端和服务器端的一个socket连接
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);
// 向服务器发送buffer中的数据，此时buffer中存放的是客户端需要接收的文件
//以下接收服务器发来的单词个数
bzero(buffer, sizeof(buffer));
// int length = 0;
/* int length = recv(client_socket, buffer, sizeof(buffer), 0);
if (length < 0)
{
printf("Recieve Data From Server %s Failed!
", argv[1]);
}
else
{
printf("Recieve words number %c From Server[%s] Finished!
",buffer[0],argv[1]);
}
bzero(buffer, BUFFER_SIZE); */
// 传输完毕，关闭socket
fclose(fp);
close(client_socket);
return 0;
}
int mywc(char file_name[],int choose)
{
FILE *fp;
char ch;
int flag=0,num=0;
// int choose;
// 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_用方式%d计算
",num,choose);
fclose(fp);
return num;
}
#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 155312
#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)
{
// set socket's address information
// 设置一个socket地址结构server_addr,代表服务器internet的地址和端口
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);
// create a stream socket
// 创建用于internet的流协议(TCP)socket，用server_socket代表服务器向客户端提供服务的接口
int server_socket = socket(PF_INET, SOCK_STREAM, 0);
if (server_socket < 0)
{
printf("Create Socket Failed!
");
exit(1);
}
// 把socket和socket地址结构绑定
if (bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)))
{
printf("Server Bind Port: %d Failed!
", HELLO_WORLD_SERVER_PORT);
exit(1);
}
// server_socket用于监听
if (listen(server_socket, LENGTH_OF_LISTEN_QUEUE))
{
printf("Server Listen Failed!
");
exit(1);
}
// 服务器端一直运行用以持续为客户端提供服务
while(1)
{
// 定义客户端的socket地址结构client_addr，当收到来自客户端的请求后，调用accept
// 接受此请求，同时将client端的地址和端口等信息写入client_addr中
struct sockaddr_in client_addr;
socklen_t length = sizeof(client_addr);
// 接受一个从client端到达server端的连接请求,将客户端的信息保存在client_addr中
// 如果没有连接请求，则一直等待直到有连接请求为止，这是accept函数的特性，可以
// 用select()来实现超时检测
// accpet返回一个新的socket,这个socket用来与此次连接到server的client进行通信
// 这里的new_server_socket代表了这个通信通道
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!
");
}
//添加进程相关代码
pthread_t pid;
if(pthread_create(&pid, NULL, process_client,(void *) &new_server_socket) < 0){
printf("pthread_create error
");
}
}
// close(server_socket);
}
void *process_client(void *new_server_socket)
{
int sockid=*(int *)new_server_socket;
FILE *fp;
//接受来自客户端的文件
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;
// 发送buffer中的字符串到new_server_socket,实际上就是发送给客户端
/*if (send(new_server_socket, buffer, sizeof(buffer), 0) < 0)
{
printf("Send number Failed!
");
}
printf("发送单词个数完毕
");*/
bzero(buffer, sizeof(buffer));
// fclose(fp);
printf("File Transfer Finished!
");
close(new_server_socket);
}
client.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 165222
#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
");
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\%
", 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\%
");
printf("file size : %d B
", filesize);
printf("time : %ld ms
", time(&t) - begin);
printf("send file success
");
printf("------------------------
");
}
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
");
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
");
return -1;
}
printf("connect server success
");
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);
}
运行截图
