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// file : cult/os/net/ipv4/datagram-socket.hxx
// author : Boris Kolpackov <boris@kolpackov.Net>
// copyright : Copyright (c) 2005-2010 Boris Kolpackov
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#ifndef CULT_OS_NET_IPV4_DATAGRAM_SOCKET_HXX
#define CULT_OS_NET_IPV4_DATAGRAM_SOCKET_HXX
#include <cult/types.hxx>
#include <cult/os/net/address.hxx>
#include <cult/os/net/datagram-socket.hxx>
#include <cult/os/net/ipv4/address.hxx>
#include <unistd.h> // close
#include <sys/socket.h> // socket, bind, sendto, revcfrom
namespace Cult
{
namespace OS
{
namespace Net
{
namespace IPv4
{
class DatagramSocket: public virtual Net::DatagramSocket
{
public:
virtual
~DatagramSocket ()
{
::close (sock_);
}
DatagramSocket ()
{
sock_ = ::socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (sock_ == -1)
throw Exception (); //@@
}
DatagramSocket (Address const& addr)
{
sock_ = ::socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (sock_ == -1)
throw Exception (); //@@
if (::bind (sock_, addr.raw_addr (), addr.raw_size ()) == -1)
throw Exception (); //@@
}
public:
virtual sa_family_t
familiy () const
{
return AF_INET;
}
virtual Int
protocol () const
{
return IPPROTO_UDP;
}
// Options.
//
public:
Size
recv_buffer_size () const
{
Int r;
socklen_t s (sizeof (r));
if (::getsockopt (sock_,
SOL_SOCKET,
SO_RCVBUF,
&r,
&s) == -1)
{
throw Exception (); //@@
}
return static_cast<Size> (r);
}
Void
recv_buffer_size (Size size)
{
Int r (static_cast<Int> (size));
if (::setsockopt (sock_,
SOL_SOCKET,
SO_RCVBUF,
&r,
sizeof (r)) == -1)
{
throw Exception ();
}
}
Size
send_buffer_size () const
{
Int r;
socklen_t s (sizeof (r));
if (::getsockopt (sock_,
SOL_SOCKET,
SO_SNDBUF,
&r,
&s) == -1)
{
throw Exception ();
}
return static_cast<Size> (r);
}
void
send_buffer_size (Size size)
{
Int r (static_cast<Int> (size));
if (::setsockopt (sock_,
SOL_SOCKET,
SO_SNDBUF,
&r,
sizeof (r)) == -1)
{
throw Exception ();
}
}
public:
Void
connect (Address const& addr)
{
if (::connect (sock_, addr.raw_addr (), addr.raw_size ()) == -1)
throw Exception ();
}
Address
address () const
{
sockaddr_in raw_addr;
socklen_t raw_size (sizeof (raw_addr));
if (::getsockname (sock_,
reinterpret_cast<sockaddr*> (&raw_addr),
&raw_size) == -1)
{
throw Exception ();
}
return Address (raw_addr);
}
public:
virtual Size
send (Void const* buf, Size size, Net::Address const& addr)
{
if (addr.familiy () != familiy ())
throw InvalidAddress ();
return send (buf, size, dynamic_cast<Address const&> (addr));
}
virtual Size
send (Void const* buf, Size size, Address const& addr)
{
ssize_t n (::sendto (sock_,
buf,
size,
0,
addr.raw_addr (),
addr.raw_size ()));
if (n == -1)
throw Exception ();
return static_cast<Size> (n);
}
virtual Size
recv (Void* buf, Size size)
{
ssize_t n (::recvfrom (sock_, buf, size, 0, 0, 0));
if (n == -1)
throw Exception ();
return static_cast<Size> (n);
}
virtual Size
recv (Void* buf, Size size, Address& addr)
{
sockaddr_in raw_addr;
socklen_t raw_size (sizeof (raw_addr));
ssize_t n (::recvfrom (sock_,
buf,
size,
0,
reinterpret_cast<sockaddr*> (&raw_addr),
&raw_size));
if (n == -1)
throw Exception ();
addr = Address (raw_addr);
return static_cast<Size> (n);
}
virtual Size
peek (Void* buf, Size size, Address& addr)
{
sockaddr_in raw_addr;
socklen_t raw_size (sizeof (raw_addr));
ssize_t n (::recvfrom (sock_,
buf,
size,
MSG_PEEK,
reinterpret_cast<sockaddr*> (&raw_addr),
&raw_size));
if (n == -1)
throw Exception ();
addr = Address (raw_addr);
return static_cast<Size> (n);
}
/*
virtual Boolean
recv (Void* buf,
Size size,
Size& received,
OS::Time const& timeout)
{
fd_set r,e;
FD_ZERO (&r);
FD_ZERO (&e);
FD_SET (sock_, &r);
FD_SET (sock_, &e);
int n = ::pselect (sock_ + 1, &r, 0, &e, &timeout.timespec (), 0);
if (n > 0)
{
recv_size = recv (buf, buf_size);
return true;
}
else if (n == 0) // timeout
{
return false;
}
else
{
throw Failure ("pselect");
}
}
*/
protected:
Int sock_;
};
}
}
}
}
#endif // CULT_OS_NET_IPV4_DATAGRAM_SOCKET_HXX
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