Huge File read and send via socket

From:

"Ganesh" <gvijayaratnam@gmail.com>

Newsgroups:

microsoft.public.cn.vc++,microsoft.public.usasalesinfo.developer.visualc++,microsoft.public.vc.language,microsoft.public.vc.stl

Date:

Wed, 23 Jan 2008 12:03:24 +0530

Message-ID:

<#KfMenYXIHA.4448@TK2MSFTNGP03.phx.gbl>

This is a multi-part message in MIME format.

------=_NextPart_000_000B_01C85DB7.F4C5EF30
Content-Type: text/plain;
    charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Hi all,

I am new to c++ and socket programming, I have a situvation that my =
function have to a binary read ( whole file as 1 chunk ) and keep the =
buffer, and send the buffrer via socket by chunk by chunk as user =
specified. I have written a code sample, but I am not getting the =
correct out out.

can some one pls look in to the code and fix it ?

FILE *fp23 = fopen( "c:\\hpfile.prn", "rb" );

fseek (fp23 , 0 , SEEK_END);
int m_jobSize = ftell (fp23);
rewind (fp23);

char* m_buffer = new char[m_jobSize+1];

int m_result = fread( m_buffer, 1, m_jobSize, fp23 );

///////////////////////////////////////////////

int BytesIndex = 0;

while( bufsize > 0)
{

  // Send some bytes
  if ( bufsize < (unsigned long)iSendStatus )
  {
   iSendStatus = send(*sock, &m_buffer[BytesIndex], bufsize, 0); // =
Socket is of type

   //
   // Call Back Function
   //
   set += iSendStatus;
   ptr(jobid,set);


   if ( iSendStatus != bufsize )
   {
    cpError = SocketErrorHandler();
    return cpError;
   }

  }
  else
  {
   iSendStatus = send(*sock, &m_buffer[BytesIndex], chunkSize, 0); // =
Socket is of type

   //
   // Call Back Function
   //
   set += iSendStatus;
   ptr(jobid,set);

   if ( iSendStatus != chunkSize )
   {
    cpError = SocketErrorHandler();
    return cpError;
   }

  }

  // Update buffer and counter
  if ( bufsize < (unsigned long)iSendStatus )
  {
   bufsize -= bufsize;
   BytesIndex += bufsize;
  }
  else
  {
   bufsize -= iSendStatus;
   BytesIndex +=iSendStatus;
  }

//////////////////////////////

regards
Ganesh

------=_NextPart_000_000B_01C85DB7.F4C5EF30
Content-Type: text/html;
    charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; =
charset=iso-8859-1">
<META content="MSHTML 6.00.2900.3132" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV><FONT face=Arial size=2>Hi all,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am new to c++ and socket programming, =
I have a
situvation that my function have to a binary read ( whole file as 1 =
chunk ) and
keep the buffer, and send the buffrer via socket by chunk by chunk =
as user
specified. I have written a code sample, but I am not getting the =
correct out
out.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>can some one pls look in to the code =
and fix it
?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>FILE *fp23 = fopen( =
"c:\\hpfile.prn", "rb"
);</FONT></DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>fseek (fp23 , 0 , =
SEEK_END);<BR>int
m_jobSize = ftell (fp23);<BR>rewind (fp23);</FONT></DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>char* m_buffer = new
char[m_jobSize+1];</FONT></DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>int m_result = fread( =
m_buffer, 1,
m_jobSize, fp23 );</FONT></DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face="Courier New"
size=2>///////////////////////////////////////////////</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" size=2> int BytesIndex = 0; =
</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" size=2> while( bufsize >
0)<BR> {</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>  // Send some
bytes<BR>  if ( bufsize < (unsigned long)iSendStatus
)<BR>  {<BR>   iSendStatus = send(*sock,
&m_buffer[BytesIndex], bufsize, 0); // Socket is of
type<BR>   <BR>   //<BR>   /=
/ Call
Back Function<BR>   //<BR>   set +=
iSendStatus;<BR>   ptr(jobid,set);<BR>   </=
FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>   if ( =
iSendStatus !=
bufsize )<BR>   {<BR>    cpError =
SocketErrorHandler();<BR>    return
cpError;<BR>   }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New"
size=2>  }<BR>  else<BR>  {<BR> &nbs=
p; iSendStatus
= send(*sock, &m_buffer[BytesIndex], chunkSize, 0); // Socket is =
of
type</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New"
size=2>   //<BR>   // Call Back
Function<BR>   //<BR>   set +=
iSendStatus;<BR>   ptr(jobid,set);</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV><FONT size=2>
<DIV><BR><FONT face="Courier New">   if ( iSendStatus =
!=
chunkSize )<BR>   {<BR>    cpError =
=
SocketErrorHandler();<BR>    return
cpError;<BR>   }<BR> <BR>  }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">  // Update buffer and
counter<BR>  if ( bufsize < (unsigned long)iSendStatus
)<BR>  {<BR>   bufsize -=
bufsize;<BR>   BytesIndex +=
bufsize;<BR>  }<BR>  else<BR>  {<BR> &=
nbsp; bufsize
-= iSendStatus; <BR>   BytesIndex +=iSendStatus;
<BR>  }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><BR><FONT
face="Courier =
New">//////////////////////////////<BR></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2>regards</FONT></DIV>
<DIV><FONT face=Arial size=2>Ganesh</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML>

------=_NextPart_000_000B_01C85DB7.F4C5EF30--