發送我做了一個服務器和客戶端應傳輸文件。 我試圖讓它讀取整個文件併發送它。 但現在,我看到它,我有一個問題。 服務器應在客戶端連接時自動發送文件。 但該文件是空的,我不知道問題出在哪裏 你可以看到,我想送.txt文件。但我想在未來發送大文件,但不大於1MB)閱讀整個文件,並通過套接字
編輯:
圖片瀏覽:http://img819.imageshack.us/img819/8259/aadi.jpg
- 左側:我想發送的文件。
- 右側:該文件我收到
的問題:我收到已損壞的文件,我不能使用它。
服務器:
#include <WinSock2.h>
#include <Windows.h>
#include <stdio.h>
#include <iostream>
using namespace std;
#pragma comment(lib, "Ws2_32.lib")
#define Port 6000
SOCKET Socket, Sub;
WSADATA Winsock;
sockaddr_in Addr;
sockaddr_in IncomingAddress;
int AddressLen = sizeof(IncomingAddress);
int main()
{
WSAStartup(MAKEWORD(2, 2), &Winsock); // Start Winsock
if(LOBYTE(Winsock.wVersion) != 2 || HIBYTE(Winsock.wVersion) != 2) // Check version
{
WSACleanup();
return 0;
}
Socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
ZeroMemory(&Addr, sizeof(Addr));
Addr.sin_family = AF_INET;
Addr.sin_port = htons(Port);
bind(Socket, (sockaddr*)&Addr, sizeof(Addr));
if(listen(Socket, 1) == SOCKET_ERROR)
{
printf("listening error\n");
}
else
{
printf("listening ok\n");
}
if(Sub = accept(Socket, (sockaddr*)&IncomingAddress, &AddressLen))
{
char *ClientIP = inet_ntoa(IncomingAddress.sin_addr);
int ClientPort = ntohs(IncomingAddress.sin_port);
printf("Client conncted!\n");
printf("IP: %s:%d\n", ClientIP, ClientPort);
printf("Sending file .. \n");
FILE *File;
char *Buffer;
unsigned long Size;
File = fopen("C:\\Prog.rar", "rb");
if(!File)
{
printf("Error while readaing the file\n");
getchar();
return 0;
}
fseek(File, 0, SEEK_END);
Size = ftell(File);
fseek(File, 0, SEEK_SET);
Buffer = new char[Size];
fread(Buffer, Size, 1, File);
char cSize[MAX_PATH];
sprintf(cSize, "%i", Size);
fclose(File);
send(Sub, cSize, MAX_PATH, 0); // File size
//int len = Size;
//char *data = Buffer;
int Offset = 0;
while(Size > Offset)
{
int Amount = send(Sub, Buffer + Offset, Size - Offset, 0);
if(Amount <= 0)
{
cout << "Error: " << WSAGetLastError() << endl;
break;
}
else
{
Offset += Amount;
printf("2\n");
}
}
free(Buffer);
closesocket(Sub);
closesocket(Socket);
WSACleanup();
}
getchar();
return 0;
}
客戶:
#include <WinSock2.h>
#include <Windows.h>
#include <stdio.h>
#include <iostream>
using namespace std;
#pragma comment(lib, "Ws2_32.lib")
SOCKET Socket;
WSADATA Winsock;
sockaddr_in Addr;
int Addrlen = sizeof(Addr);
int main()
{
WSAStartup(MAKEWORD(2, 2), &Winsock); // Start Winsock
if(LOBYTE(Winsock.wVersion) != 2 || HIBYTE(Winsock.wVersion) != 2) // Check version
{
WSACleanup();
return 0;
}
Socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
ZeroMemory(&Addr, sizeof(Addr)); // clear the struct
Addr.sin_family = AF_INET; // set the address family
Addr.sin_addr.s_addr = inet_addr("127.0.0.1");
Addr.sin_port = htons(6000); // set the port
if(connect(Socket, (sockaddr*)&Addr, sizeof(Addr)) < 0)
{
printf("Connection failed !\n");
getchar();
return 0;
}
printf("Connection successful !\n");
printf("Receiving file .. \n");
int Size;
char *Filesize = new char[1024];
if(recv(Socket, Filesize, 1024, 0)) // File size
{
Size = atoi((const char*)Filesize);
printf("File size: %d\n", Size);
}
char *Buffer = new char[Size];
//int len = Size;
//char *data = Buffer;
int Offset = 0;
while(Size > Offset)
{
int Amount = recv(Socket, Buffer + Offset, Size - Offset, 0);
if(Amount <= 0)
{
cout << "Error: " << WSAGetLastError() << endl;
break;
}
else
{
Offset += Amount;
printf("2\n");
}
}
FILE *File;
File = fopen("Prog.rar", "wb");
fwrite(Buffer, 1, Size, File);
fclose(File);
getchar();
closesocket(Socket);
WSACleanup();
return 0;
}
文件大小是否被編碼爲1,024字節的字符串?或者'MAX_PATH'字節串?如果第一個'recv'得到31個字節,會發生什麼?您已經實現了一個用於發送文件數據的合理協議,但是您忘記了如何發送文件大小。 – 2013-03-03 06:05:49