windows 下实现socket编程_传送文件

其实，Windows下的socket编程与Linux下的类似，这里不再赘述！

参考：http://blog.csdn.net/chudongfang2015/article/details/51926999

下面直接上代码：

cilent.cpp:

/************************************************************************* 
  = File Name: Win_Client.c 
 ************************************************************************/
 
#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 
#include <WinSock2.h> 

#define PORT 8087 //端口号
#define SERVER_IP "127.0.0.1"//本地环回地址，
#define BUFFER_SIZE 1024 
#define FILE_NAME_MAX_SIZE 512 //文件名最大值
#pragma comment(lib, "WS2_32")//加入相应的库
  
int main() 
{ 
  // 
	WSADATA wsaData; 
	WORD socketVersion = MAKEWORD(2, 0); 
	if(WSAStartup(socketVersion, &wsaData) != 0) 
	{ 
		printf("Init socket dll error!"); 
		exit(1); 
	} 
  
	//创建socket 
	SOCKET c_Socket = socket(AF_INET, SOCK_STREAM, 0); 
	if (SOCKET_ERROR == c_Socket) //出错报错
	{ 
		printf("Create Socket Error!"); 
		system("pause"); 
		exit(1); 
	} 
  
	//指定服务端的地址 ，固定写法
	sockaddr_in server_addr; 
	server_addr.sin_family = AF_INET; 
	server_addr.sin_addr.S_un.S_addr = inet_addr(SERVER_IP); 
	server_addr.sin_port = htons(PORT); 
  
	if (SOCKET_ERROR == connect(c_Socket, (LPSOCKADDR)&server_addr, sizeof(server_addr)))//连接client 
	{ 
		printf("Can Not Connect To Server IP!\n"); 
		system("pause"); 
		exit(1); 
	} 
  
	//输入文件名 
	char file_name[FILE_NAME_MAX_SIZE+1]; 
	memset(file_name, 0, FILE_NAME_MAX_SIZE+1); 
	printf("Please Input File Name On Server: \n"); 
	scanf("%s",file_name); 
 //把文件名考到file_name中 
	char buffer[BUFFER_SIZE]; 
	memset(buffer, 0, BUFFER_SIZE); 
	strncpy(buffer, file_name, strlen(file_name)>BUFFER_SIZE ? BUFFER_SIZE:strlen(file_name)); 
  
	//向服务器发送文件名 
	if(send(c_Socket, buffer, BUFFER_SIZE, 0) < 0) 
	{ 
		printf("Send File Name Failed\n"); 
		system("pause"); 
		exit(1); 
	} 
  
	//打开文件，准备写入 
	FILE * fp = fopen(file_name, "rt"); 
	if(NULL == fp) 
	{	 
		printf("File: %s Can Not Open To Write\n", file_name); 
		system("pause"); 
		exit(1); 
	} 
	else
	{ 
		memset(buffer, 0, BUFFER_SIZE);//清空buffer区域， 
		int length = 0;  
		//发送文件内容，直到读不到文件
		while((length = fread(buffer, sizeof(char), BUFFER_SIZE, fp)) > 0) 
		{ 
			if (send(c_Socket, buffer, length, 0) < 0)//向服务端发送 
			{ 
				printf("Send File: %s Failed\n", file_name); 
				break; 
			} 
			memset(buffer, 0, BUFFER_SIZE); 
		} 
		printf("File: %s Transfer Successful!\n", file_name); 
	}   
	fclose(fp); //关闭文件
	closesocket(c_Socket);//关闭socket 
    //释放winsock库 
	WSACleanup(); 
  	system("pause"); 
	return 0; 
} 

server.cpp:

/************************************************************************* 
  > File Name: Win_Server.c 
 ************************************************************************/
  
#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 
#include <WinSock2.h> 
  
#define PORT 8087 //端口号
#define SERVER_IP "127.0.0.1"//本地环回地址 
#define BUFFER_SIZE 1024 
#define FILE_NAME_MAX_SIZE 512 
#pragma comment(lib, "WS2_32") 
  
int main() 
{ 
	// 声明并初始化一个服务端(本地)的地址结构 
	sockaddr_in server_addr; 
	server_addr.sin_family = AF_INET; 
	server_addr.sin_addr.S_un.S_addr = INADDR_ANY; 
	server_addr.sin_port = htons(PORT); 
  
	// 初始化socket dll 
	WSADATA wsaData; 
	WORD socketVersion = MAKEWORD(2, 0); 
	if(WSAStartup(socketVersion, &wsaData) != 0) 
	{ 
		printf("Init socket dll error!"); 
		exit(1); 
	} 
  
	// 创建socket 
	SOCKET m_Socket = socket(AF_INET, SOCK_STREAM, 0); 
    if (SOCKET_ERROR == m_Socket) 
    { 
      printf("Create Socket Error!"); 
	  exit(1); 
    } 
  
	//绑定socket和服务端(本地)地址 
	if (SOCKET_ERROR == bind(m_Socket, (LPSOCKADDR)&server_addr, sizeof(server_addr))) 
	{ 
		printf("Server Bind Failed: %d", WSAGetLastError()); 
		exit(1); 
	} 
  
	//监听 
	if (SOCKET_ERROR == listen(m_Socket, 10)) 
	{ 
		printf("Server Listen Failed: %d", WSAGetLastError()); 
		exit(1); 
	} 
  
  
	while(1) 
	{ 
		printf("Listening To Client...\n");  
		sockaddr_in client_addr; 
		int client_addr_len = sizeof(client_addr); 
		//得到客户端描述符
		SOCKET m_New_Socket = accept(m_Socket, (sockaddr *)&client_addr, &client_addr_len); 
		if (SOCKET_ERROR == m_New_Socket) //创建新的套接字
		{ 
			printf("Server Accept Failed: %d", WSAGetLastError());//？？？？？？？？？？？
			break; 
		} 
  
		char buffer[BUFFER_SIZE]; 
		memset(buffer, 0, BUFFER_SIZE); 
		if (recv(m_New_Socket, buffer, BUFFER_SIZE, 0) < 0)//接受客户端发来的文件名 
		{ 
			printf("Server Receive Data Failed!"); 
			break; 
		} 
  
		char file_name[FILE_NAME_MAX_SIZE+1]; 
		memset(file_name, 0, 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); 
  
		FILE * fp = fopen(file_name, "wt");//以写入的方式打开文件
		if (NULL == fp) 
		{ 
			printf("File: %s Not Found\n", file_name); 
		} 
		else
		{ 
			memset(buffer, 0, BUFFER_SIZE); 
			int length = 0; 
			//接受到客户端发来的文件数据
			while ((length = recv(m_New_Socket, buffer, BUFFER_SIZE, 0)) > 0) 
			{ 
				//把发来的数据写入到文件中
				if (fwrite(buffer, sizeof(char), length, fp) < length) 
				{ 
					printf("File: %s Write Failed\n", file_name); 
					break; 
				} 
				memset(buffer, 0, BUFFER_SIZE); 
			} 
			printf("Receive File: %s From Server Successful!\n", file_name); 

		} 
		fclose(fp); //关闭文件描述符

		closesocket(m_New_Socket); 
	} 
  
	closesocket(m_Socket); 
	//释放winsock库 
	WSACleanup(); 
	return 0; 
}