大家好，我初学，请大家帮我看看我的文件传输，谢谢

SOCKET RecvSocket=::socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);

if (RecvSocket == INVALID_SOCKET)
{
MessageBox("Failed Socket");
}

WSADATA wsaData;

struct sockaddr_in local;
struct sockaddr_in RecvAddr;
struct sockaddr_in SenderAddr;
SenderAddr=local;
int Port = 6000;
char RecvBuf[1024];
int BufLen = 1024;

int SenderAddrSize = sizeof(SenderAddr);

WSAStartup(MAKEWORD(2,2), &wsaData);

RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);


RecvAddr.sin_family = AF_INET;
RecvAddr.sin_port = htons(Port);
RecvAddr.sin_addr.s_addr = htonl(INADDR_ANY);

bind(RecvSocket, (SOCKADDR *) &RecvAddr, sizeof(RecvAddr));


recvfrom(RecvSocket,
RecvBuf,
BufLen,
0,
(SOCKADDR *)&SenderAddr,
&SenderAddrSize);


closesocket(RecvSocket);

WSACleanup();

//创建一个另存为对话框
CFileDialog SaveFileDialog(FALSE);
SaveFileDialog.DoModal();