搞不清楚状况，Stack around the variable 'dest' was corrupted.

搞不清楚状况，Stack around the variable 'dest' was corrupted.

就是一个POST的提交，结构搞晕我了。

搞不清楚为什么GET方式没效果，而POST有效果，却提示“Run-Time Check Failure #2 - Stack around the variable 'dest' was corrupted.”
好晕倒啊！！老衲没办法了，毕竟对com不熟。记下状况以后来研究研究。

#include  " Visitor.h "

#include  < stdio.h >
#include  < iostream >
#include  " winsock.h "  
#pragma comment(lib, " ws2_32.lib " )  
#define  winsock_version 0x0101

using    namespace   std;

#include  " URL.h " ;

Visitor::Visitor( void )
{
}

Visitor:: ~ Visitor( void )
{
}

char   *  Visitor::POST( char   *  host, char *  pathAndQuery,  char   *  parms)
{
     char   *  requestString  =   new   char [ 4000 ];
    memset(requestString, 0 , 4000 );
     if (strlen(parms)  >   0 )
        strcat(requestString, " POST  " );
     else
        strcat(requestString, " GET  " );
    strcat(requestString,pathAndQuery);
    strcat(requestString, "  HTTP/1.1\r\n " );
    strcat(requestString, " Host:  " );
    strcat(requestString,host);
    
    strcat(requestString, " \r\nAccept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\r\n " );
    strcat(requestString, " Accept-Language: zh-cn,zh;q=0.5\r\n " );
    strcat(requestString, " User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648;\r\n " );
    strcat(requestString, " UA-CPU: x86\r\n " );
    strcat(requestString, " Accept-Charset: gb2312,utf-8;q=0.7,*;q=0.7\r\n " );
     // strcat(requestString,"Accept-Encoding: gzip, deflate\r\n");
    strcat(requestString, " Connection: Keep-Alive\r\n " );
    
     if (strlen(parms)  >   0 ){
        strcat(requestString, " Content-Type: application/x-www-form-urlencoded\r\n " );
        strcat(requestString, " Content-Length:  " );
         char   *  p  =   new   char [ 4 ];
        itoa(strlen(parms),p, 10 );   
        strcat(requestString,p);
        strcat(requestString, " \r\n\r\n " );
        strcat(requestString,parms);
    }
     // cout << requestString;

    WSADATA wsadata;
    LPHOSTENT lphostent; 
    SOCKET hsocket;
    SOCKADDR_IN saServer;
     int  nRet;
     if (WSAStartup(winsock_version, & wsadata))
    {
        
    }
    lphostent  =  gethostbyname(host);
    hsocket  =  socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    saServer.sin_family  =  AF_INET;
    saServer.sin_port  =  htons( 80 );
    saServer.sin_addr  =   * ((LPIN_ADDR) * lphostent -> h_addr_list);
    nRet  =  connect(hsocket, (LPSOCKADDR) & saServer,  sizeof (SOCKADDR_IN));
    nRet  =  send(hsocket, requestString, strlen(requestString),  0 ); 
     char  dest[ 1000 ];
    nRet = 1 ;   
     int  bytes  =   0 ;
     while (nRet > 0 )  
    {
        nRet  =  recv(hsocket,(LPSTR)dest, sizeof (dest), 0 );
         if (nRet  >   0 )   
            dest[nRet]  =   0 ;   
         else {
             // dest[0] = 0;  
             break ;
        }
         // printf("\nReceived   bytes:%d\n",nRet);   
         try {
        cout  <<  dest;
        } catch (exception ex){}
        bytes  +=  nRet;
    }
    closesocket(hsocket);
     // delete []dest;
    printf( " \nReceived   bytes:%d\n " ,bytes);   
    delete requestString;
     return   "" ;
}