How to serilize the data in c++ specially the structure vector in c++ under windows

Question

0.00/5 (No votes)

See more:

i craete one structue i added the structur into the vector..i want to pass the vector by using socket.i want to serilaize the vector and then pass to the socket..But i don't know how to do..Please tell How to do that..

Posted 27-Jul-11 20:37pm

Dhanasundhari

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Eugen Podsypalnikov · Accepted Answer · 2011-07-27T21:00:00

Solution 1

Assumed the structure SDATA has no pointer members :) :

BYTE* MakeMemoryDump(vector<sdata>* pVector)
{
  BYTE* pData(NULL);

  if (pVector) {
    int iCount(pVectot->GetCount());
    if (iCount) {
      pData = new BYTE(iCount * sizeof(SDATA) + sizeof(DWORD));
      DWORD* pdwCount = (DWORD*) pData;
      *pdwCount = (DWORD) iCount;
      SDATA* psData = (SDATA*) (pData + sizeof(DWORD));
      for (int i = 0; i < iCount; i++) {
        memcpy_s(psData[i], sizeof(SDATA), &pVector->GetAt(i), sizeof(SDATA));
      }
    }
  }

  return pData;
}

...and :) :

void ReadMemoryDump(BYTE* pData, vector<sdata>* pToVector)
{
  if (pData && pToVector) {
    pToVector->Empty();
    DWORD* pdwCount = (DWORD*) pData;
    SDATA* psData = (SDATA*) (pData + sizeof(DWORD));
    for (DWORD dw = 0; dw < *pdwCount; dw++) {
      pToVector->Add(*psData[i]);
    }
  }
}</sdata>

Posted 27-Jul-11 21:00pm

Eugen Podsypalnikov

Updated 27-Jul-11 21:17pm

v3

Comments

Dhanasundhari 28-Jul-11 3:06am

How to de-serialize that sir. in my client side

Eugen Podsypalnikov 28-Jul-11 3:17am

Please see above :)

Dhanasundhari 28-Jul-11 3:31am

ok.. Thanks sir..

Dhanasundhari 28-Jul-11 3:36am

#include "stdafx.h"
#include <memory.h>
#include <windows.h>
#include <winsock2.h>
#include <iostream.h>
#include <lm.h>
#include <vector>
#include <string>
#include <memory.h>
using namespace std;
struct ClientInformation
{
string sCliName;
int iPlatId;
int iMajor;
int iType;
int iMinor;
};

class cClient
{
private:
DWORD dwLevel;
DWORD dwPrefMaxLen;
LPSERVER_INFO_101 pBuf;
DWORD dwEntriesRead;
DWORD dwTotalEntries;
DWORD dwServerType;
LPTSTR pszDomainName;
NET_API_STATUS nStatus;
WSADATA wsaData;
DWORD dwResumeHandle;
char cszBuf[200];
SOCKET ClientSocket;
int iTemp;
string str;
public:
cClient()
{
dwLevel = 101;
dwPrefMaxLen = MAX_PREFERRED_LENGTH;
pBuf = NULL;
dwEntriesRead = 0;
dwTotalEntries = 0;
dwServerType = SV_TYPE_SERVER;
pszDomainName = NULL;
dwResumeHandle = 0;

}

void FindDomainSystem()
{
ClientInformation *StructObj;
vector <clientinformation> *myvec;
WSAStartup(MAKEWORD(2,2), &wsaData);
nStatus = NetServerEnum(NULL,dwLevel,(LPBYTE *) & pBuf,dwPrefMaxLen,
&dwEntriesRead,&dwTotalEntries,dwServerType,
NULL, &dwResumeHandle);
myvec = new vector <clientinformation>();

if(nStatus == NERR_Success)
{
cout<<"The NetServerEnumeration sucessfuly "<<"\n";
cout<<"The total entires is "<<dwEntriesRead<<"\n\n";
for(int i=1; i<= dwEntriesRead;i++)
{

memset(cszBuf,0,sizeof(cszBuf));

sprintf( cszBuf, "%S", pBuf->sv101_name );
cout<<"\nThe server name "<<cszBuf<<"\n";
StructObj->sCliName.erase();
StructObj->sCliName.append(cszBuf);
cout<<"The Platform id of the system is "<<pBuf->sv101_platform_id<<"\n";
StructObj->iPlatId = pBuf->sv101_platform_id;
cout<<"The type of system running is "<<pBuf->sv101_type<<"\n";
StructObj->iType = pBuf->sv101_type;
cout<<"The major version of the system is "<<pBuf->sv101_version_major<<"\n";
StructObj->iMajor = pBuf->sv101_version_major;
cout<<"The minor version of the system is "<<pBuf->sv101_version_minor<<"\n";
StructObj->iMinor = pBuf->sv101_version_minor;
send(ClientSocket,(char*)&StructObj,sizeof(StructObj),0);
myvec->push_back(*StructObj);
pBuf++;
}
}
else
{
cout<<"\nThe Net Enumeration producing Error\n";
}
cout<<"\n\n\n\nThe vector data\n";
display(myvec);

}
void display(vector <clientinformation> *my)
{
BYTE *pData = NULL;
if(my)
{
int i = my->size();
if(i)
{
pData = new BYTE(i*sizeof(ClientInformation));
ClientInformation *psData = (ClientInformation*)pData;
for(int i1=0;i1<i;i++)
{
="" memcpy_s(psdata[i1],sizeof(clientinformation),&my-="">at(i1),sizeof(ClientInformation)); //prodcing error in that place.. what i want to do now...
}
}

//int icount = my
}

}

};
int main(int argc, char* argv[])
{

cClient o;
o.FindDomainSystem();
return 0;
}

thats is the code i build sir.. but it producing error sir..
what i want to do now..

Eugen Podsypalnikov 28-Jul-11 7:21am

0. Probably you should increment i1 (i1++) instead i (i++)
1. See also at my modified first function: the count will be "serialized" as well
:)

Philippe Mori 28-Jul-11 22:12pm

This is rather fragile to write a structure to a file as SDATA size might vary with compiler options, the platform and the CPU.
Better to uses a library specifically written for that or manually handle the conversion between raw data (Bytes) and the data (structure).