标签：ati 结构 flag char s break fail main 成功 查看
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使用man命令查看wc(1)命令的主要内容
?
编写服务器和客户端代码
服务器:
#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 165211
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
void itoa(int i,char* string)
{
int power,j;
j=i;
for(power=1;j>=10;j/=10)
power*=10;
for(;power>0;power/=10)
{
*string++=‘0‘+i/power;
i%=power;
}
*string=‘\0‘;
}
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);
// 打开文件并读取文件数据
FILE *fp = fopen(file_name, "w");
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，便将其发送给客户端，循环直到文件读完为止
char*ch="bye";
while((length = recv(new_server_socket_fd, buffer, 1024, 0)) > 0)
{
if(strcmp(buffer,ch)==0)break;
if(fwrite(buffer, sizeof(char), length, fp) < length)
{
printf("File:\t%s Write Failed\n", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}fclose(fp);
int count=0;
char s[21];
FILE *fp1;
if((fp1=fopen(file_name,"r"))==NULL){
printf("Open the file failure...\n");
exit(0);
}
while(fscanf(fp,"%s",s)!=EOF)
count++;
fclose(fp1);
itoa(count,buffer);
printf("There is(are) %s word(s) in the text.\n",buffer);
// 关闭文件
send(new_server_socket_fd, buffer, strlen(buffer), 0);
printf("File:%s Transfer Successful!\n", file_name);
}
// 关闭与客户端的连接
close(new_server_socket_fd);
}
// 关闭监听用的socket
close(server_socket_fd);
return 0;
}
客户端
#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 165211
#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 Server:\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，准备写入
FILE *fp = fopen(file_name, "r");
if(NULL == fp)
{
printf("File:\t%s Can Not Open To Write\n", file_name);
exit(1);
}
// 从服务器接收数据到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 = fread(buffer, sizeof(char), 1024, fp)) > 0)
{
if(send(client_socket_fd, buffer, length, 0) < 0)
{
printf("Send File:%s Failed./n", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}
char ch[1024];
scanf("%s",ch);
send(client_socket_fd, "bye", 1024, 0);
recv(client_socket_fd, buffer, 1024, 0);
printf("There is(are) %s word(s) in the text %s.\n",buffer,file_name);
// 接收成功后，关闭文件，关闭socket
printf("Receive File:\t%s From Server IP Successful!\n", file_name);
close(client_socket_fd);
return 0;
}
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，并分析原因服务器
#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 165211
#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;
FILE *fp;
if((fp = fopen(file_name,"r"))==NULL)
{
printf("Failure to open %s\n",file_name);
exit(0);
}
while((ch=fgetc(fp))!=EOF)
{
if(ch==‘ ‘ || ch==‘\n‘ || ch==‘\t‘ || ch==‘\r‘)
{
flag=0;
}
else
{
if(flag==0)
{
flag=1;
num++;
}
}
}
printf("count：%d \n",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!\n");
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!\n", HELLO_WORLD_SERVER_PORT);
exit(1);
}
// server_socket用于监听
if (listen(server_socket, LENGTH_OF_LISTEN_QUEUE))
{
printf("Server Listen Failed!\n");
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);
int new_server_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length);
printf("connected to client\n");
if (new_server_socket < 0)
{
printf("Server Accept Failed!\n");
}
//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\n");
}
}
// 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\n",buffer);
}
strcpy(file_name,buffer);
strcat(file_name,"-server");
if((fp = fopen(file_name,"w"))==NULL)
{
printf("Failure to open %s\n",file_name);
exit(0);
}
while( length = recv(sockid, buffer, BUFFER_SIZE, 0))
{
if(length<0)
{
printf("fail to accept file\n");
exit(0);
}
if(fwrite(buffer,sizeof(char),length,fp)<length)
{
printf("fail to write file\n");
}
bzero(buffer, BUFFER_SIZE);
}
fclose(fp);
printf("accept the file successfully\n");
int number=0;
number=mywc(file_name);
bzero(buffer, BUFFER_SIZE);
buffer[0]=number+48;
bzero(buffer, sizeof(buffer));
printf("File Transfer Finished!\n");
close(new_server_socket);
}
客户端
#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 165211
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
int mywc(char file_name[]);
int main(int argc, char **argv)
{
FILE *fp;
if (argc != 2)
{
printf("Usage: ./%s ServerIPAddress\n", 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!\n");
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!\n");
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!\n");
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!\n", argv[1]);
exit(1);
}
char file_name[FILE_NAME_MAX_SIZE + 1];
bzero(file_name, sizeof(file_name));
printf("Please Input File Name.\t");
scanf("%s", file_name);
if((fp = fopen(file_name,"r"))==NULL)
{
printf("Failure to open %s\n",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("fail to send filename\n");
}
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("fail to send file\n");
}
bzero(buffer, sizeof(buffer));
i=0;
}
}
if(i<BUFFER_SIZE)
{
if((send(client_socket, buffer, i, 0))==-1)
{
printf("fail to send file\n");
}
}
printf("send %s finish\n",file_name);
mywc(file_name);
// 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));
fclose(fp);
close(client_socket);
return 0;
}
int mywc(char file_name[])
{
FILE *fp;
char ch;
int flag=0,num=0;
if((fp = fopen(file_name,"r"))==NULL)
{
printf("Failure to open %s\n",file_name);
exit(0);
}
while((ch=fgetc(fp))!=EOF)
{
if(ch==‘ ‘ || ch==‘\n‘ || ch==‘\t‘ || ch==‘\r‘)
flag=0;
else
{
if(flag==0)
{
flag=1;
num++;
}
}
}
printf("result is:%d \n",num);
fclose(fp);
return num;
}
标签：ati 结构 flag char s break fail main 成功 查看
原文地址：https://www.cnblogs.com/akashi/p/9977874.html
