Re: error reading from socket

From:
Ian Collins <ian-news@hotmail.com>
Newsgroups:
comp.lang.c++
Date:
Sat, 22 Jul 2006 14:32:55 +1200
Message-ID:
<4idh2nF2jcioU2@individual.net>
msosno01@gmail.com wrote:

I am trying to send an integer from Java Client to C++ server. I
figured out how to do the conversion. However, I have a problem reading
from the socket.


What is your problem and where are your tests?

This is my code:

int DataInputStream::readInt()//reads one integer from the client
{
   int32_t var1;
   soc->recv((void*)&var1, 4);
   var1 = ntohl(var1);
   return var1;
}

I am assuming that I need a loop, but I cannot figure out which one. I
tried all cases that I could imagine, but none of them worked.
I MUST use recv function. Here is how it is defined:


A loop for what?

int recv(void *buffer, int bufferLen)
    throw(SocketException) {


Exception specifications (other than throw()) tend to be more of
hindrance than a help. Consider what happens if another exception gets
throw.

  int rtn;
  if ((rtn = ::recv(sockDesc, (raw_type *) buffer, bufferLen, 0)) < 0)
{
    throw SocketException("Received failed (recv())", true);
  }

  return rtn;
}

Any help is appreciated.


--
Ian Collins.

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