win32 tcp文件传输客户端

#include<stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#include <string.h>

#pragma comment(lib,"ws2_32.lib")

#define PORT 9999
#define IPADDR "127.0.0.1"
#define BACKLOG 20
#define FILENAME 200
#define LENGTH 200
#define BUFFERSIZE 1024

struct FILEHEAD //FILE-head  struct
{
	char filename[LENGTH];//file name
	//char ext[LENGTH];
	unsigned int length;//the byte of the file

};

struct FILEDATA //FILE-data  struct
{
	char filename[LENGTH];//file name
	char package[BUFFERSIZE];//package data
	unsigned int length;//the byte of the file
	unsigned int index;//index of the package
	
};

void getFileInformation(FILEHEAD file)
{
	printf( "file information :\n" );
	printf( "  Filename: %s\n", file.filename );
	//printf( "  Ext: %s\n", file.ext );
	printf( "  length is btye: %ld btye\n", file.length );
}


int main(int argc, char *argv[])
{
	FILEHEAD filehead;
	FILEDATA filedata;
	WSADATA wsadata;
	WSAStartup(MAKEWORD(2,0),&wsadata);
	SOCKET sock_trans=socket(AF_INET,SOCK_STREAM,0);
	
	memset(&filehead,0,sizeof(filehead));
	memset(&filedata,0,sizeof(filedata));
	
	if (0==sock_trans)
	{
		printf ("socket build faile!!\n");
		exit(1);
	}
	
	printf ("target pc's IP address: 127.0.0.1\n");
	printf("输入文件名(包括路径)：\n");
	scanf("%s",filehead.filename);
	
	//如果正式调试，将服务器端ip写死。
		
	SOCKADDR_IN sockadd;
	sockadd.sin_family=AF_INET;
	sockadd.sin_port=htons(PORT);
	sockadd.sin_addr.S_un.S_addr=inet_addr(IPADDR);
	
	int con_info=connect(sock_trans,(SOCKADDR*)&sockadd,sizeof(sockadd));
	
	if (SOCKET_ERROR==con_info)
	{
		printf ("connect fail!\n");
		exit(1);
	}
	
	//Sleep(100);

	FILE *fp= NULL;
	fp=fopen(filehead.filename,"rb");
	if (NULL==fp)
	{
		printf("cannot open the %s \n",filehead.filename);
		exit(1);
	}
	
	fseek(fp,0l,SEEK_END);//此处将fp移到了文件末尾，要移动回去,不然读文件总是零
	filehead.length=ftell(fp);
	fseek(fp,0l,SEEK_SET);//将文件指针移动回头部

	char ext[LENGTH]={0};
	_splitpath(filehead.filename, NULL, NULL, filehead.filename, ext);//分割文件名
	strcat(filehead.filename,ext);
	strcpy(filedata.filename,filehead.filename);

	getFileInformation(filehead);

	//setFileInformation();
	//freed_return_val=fread(buf,1,1024,fp);//读文件字符
	//char buf[BUFFER];	
	int fread_return_val=0;//文件读出字符的返回值
	Sleep(3000);

	//发送文件头信息
	printf("发送文件头信息...\n");
	send(sock_trans,(char *)&filehead,sizeof(filehead),0);

	//char buf[BUFFERSIZE]={0};
	filedata.index=0;
	printf("发送文件信息...\n");
	while (1)		
		{	
			fread_return_val=fread(filedata.package,1,BUFFERSIZE,fp);
			//fread_return_val=fread(buf,1,BUFFERSIZE,fp);
			if (0==fread_return_val)
			{
				break;
			}
			filedata.index++;
			send(sock_trans,(char *)&filedata,sizeof(filedata),0);
			//send(sock_trans,buf,BUFFERSIZE,0);
			printf("第%d块发送完成!\n",filedata.index);		
		}


	
	
	
	fclose(fp);
	
	closesocket(sock_trans);
	WSACleanup();
	printf("\n发送文件完成...\n");	

	system("pause");
	
	return 0;
	
}