Sample loop for reading POST data with WifiESP library needed

Using Arduino Programming Questions
1

Reading form POST data seems utterly impossible with wifiesp library.

If a read one char at a time until I reach the data length in the HTTP POST header then I end up with a TIMEOUT error and chars lost from my form POST data.

If I try a loop with bulk reads like below, I end up with total garbage as my POST data:

How do you frigging do this?????

Extremely frustrated!

bool CWifi::readPostData(WiFiEspClient& WifiClient, const uint16_t nPostDataLength)
{
  bool bEndOfDataFound = true;
  CTextFile filePostData(m_strPostDataFileName.c_str(), O_WRITE | O_CREAT | O_TRUNC);
  uint16_t nTotalBytesRead = 0;
  
  if (filePostData)
  {
    while ((WifiClient.available() > 0) && (nTotalBytesRead < nPostDataLength))
    {
      if (WifiClient.available() > BUFF_SIZE)
      {
        m_nBytesRead = WifiClient.read(m_arrayReadBuff, BUFF_SIZE);
      }
      else
        m_nBytesRead = WifiClient.read(m_arrayReadBuff, WifiClient.available());

      filePostData.write(m_arrayReadBuff, m_nBytesRead);
      nTotalBytesRead += m_nBytesRead;
     
    }
    filePostData.close();
    dumpFile(m_strPostDataFileName.c_str());
  }
  return bEndOfDataFound;
2

I tried this loop to get my POST data.

bool CWifi::readPostData(WiFiEspClient& WifiClient, uint16_t nPostDataLength)
{
  bool bEndOfDataFound = true;
  CTextFile filePostData(m_strPostDataFileName.c_str(), O_WRITE | O_CREAT | O_TRUNC);
  uint16_t nTotalBytesRead = 0;
  
  if (filePostData)
  {
    debug('*', WifiClient.available());
    debug('*', BUFF_SIZE);
    debug('*', nPostDataLength);
    while (WifiClient.available() > 0)
    {
      m_nBytesRead = WifiClient.read(m_arrayReadBuff, nPostDataLength);
      debug('@', WifiClient.available());
    }
    debug('*', m_nBytesRead);
   }
 }

The out put of the debug statements are as follows:

WifiClient.available() = 568
BUFF_SIZE = 2048
nPostDataLength = 555

After 'm_nBytesRead = WifiClient.read(m_arrayReadBuff, nPostDataLength);'

And then I am in an infinite loop
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
WifiClient.available() = 245
.
.
.

Aren't these read functions supposed to read the number of bytes specified by the second parameter or else what ever bytes are available?

Why do I end up in an infinite loop with WifiESP with bytes available for reading?????

HOW DO YOU SENSIBLY GET BYTES OUT OF THIS DAMN WifiClient object?