Re: [Boost-users] Socket and iostream

From: Jakub Stachowski (stachowski_at_[hidden])
Date: 2006-11-08 02:22:22

Ivan LAURETTE wrote:

> Darwin 8.8.0
> Boost 1.33.1
> gcc 4.0.1
> 
> Hello,
> 
> I want to establish a SMTP connection through a socket, then dialog with
> the server using a stream. I thought I could to it like this:
> //--------------------------------------------
> #include <boost/iostreams/stream.hpp>
> #include <boost/iostreams/device/file_descriptor.hpp>
> 
> using namespace std;
> using namespace boost::iostreams;
> 
> ...
> int theSocket = socket(AF_INET,SOCK_STREAM,0);
> connect(theSocket, ...);
> 
> file_descriptor fdDevice(theSocket);
> stream_buffer<file_descriptor> fdstream(fdDevice);
> iostream os(&fdstream);
> 
> string answer;
> getline(os, answer);
> cout << answer << endl;
> os << "HELO xxxxx" << endl;
> getline(os, answer);
> cout << answer << endl;
> os << "MAIL FROM: <xxx.xxx_at_xxx.xxx>" << endl;
> getline(os, answer);
> cout << answer << endl;
> ...
> //--------------------------------------------
> But nothing seems to be written nor readen to/from the socket except for
> the first getline. What am I doing wrong here ?

Try flushing the stream after each write.

> 
> Thanks in advance for any help.