How to access array at the server end of tcp/ip socket - c++

Question

I'm new to tcp socket with c++. I am trying to send a int array over the socket. I write my own client and socket(Both run on winOS). To make I can receive the int array type, I set the recvbuffer as int[] type and force it change to char inside the recv() function. This is part of the code of server:
int recvbuf[6];
and
iResult = recv(ClientSocket, (char *)&recvbuf, recvbuflen, 0);
The result is good, I can print out all the six numbers, which means my client works well. HOWEVER, when I switch the server to another one, which was built-in a sdk and running on linux, I can no longer access those numbers.
For the sdk, I have a I/O looks like this:
typedef BYTE char
unsigned int getData(BYTE * data, unsigned int len)
{
if (_dataFlag == 1)
{
if (len <= DATA_LENGTH)
{
memcpy(data, _receivedData, len);
_dataFlag = 0;
return len;
}
else
{
memcpy(data, _receivedData, DATA_LENGTH);
_dataFlag = 0;
return DATA_LENGTH;
}
}
return 0;
}
The way I access the _socketData is:
iResult = _tcpSocket.getData(_socketData, MSG_LEN);
int *ptr = (int *)&_socketData;
And use ptr[i] (i = 0 ... 5) to access the numbers. But it doesn't work, I don't get what I want. Could you guys please solve my problem, thx.
There is code how I send int array thru Client:
while (1)
{
ifstream infile;
infile.open(open_path);
if (!infile)
cout << "error" << endl;
string str;
double temp;
int length;
int array[6];
cout << "store to vector" << endl;
vector<double> ve;
while (infile >> temp)
{
ve.push_back(temp);
}
for (int i = 0; i < ve.size(); i++)
{
array[i] = ve[i] * 10000;
}
iResult = send(ConnectSocket, (char*)array, (int)sizeof(array), 0);
if (iResult == SOCKET_ERROR) {
printf("send failed with error: %d\n", WSAGetLastError());
closesocket(ConnectSocket);
WSACleanup();
return 1;
}
else {
cout << "success" << endl;
Sleep(500);
}
}