Socket::Status UdpSocket::send(const void* data, std::size_t size, const IpAddress& remoteAddress, unsigned short remotePort)
{
// Create the internal socket if it doesn't exist
create();
// Make sure that all the data will fit in one datagram
if (size > MaxDatagramSize)
{
err() << "Cannot send data over the network "
<< "(the number of bytes to send is greater than sf::UdpSocket::MaxDatagramSize)" << std::endl;
return Error;
}
// Build the target address
sockaddr_in address = priv::SocketImpl::createAddress(remoteAddress.toInteger(), remotePort);
// Send the data (unlike TCP, all the data is always sent in one call)
int sent = sendto(getHandle(), static_cast<const char*>(data), static_cast<int>(size), 0, reinterpret_cast<sockaddr*>(&address), sizeof(address));
// Check for errors
if (sent < 0)
return priv::SocketImpl::getErrorStatus();
return Done;
}
Socket::Status TcpListener::Listen(unsigned short port, const IpAddress& address)
{
Create();
if ((address == IpAddress::None) || (address == IpAddress::Broadcast))
return Error;
sockaddr_in addr = be::SocketBE::createAddress(address.toInteger(), port);
if (bind(GetHandle(), reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == -1)
{
return Error;
}
if (::listen(GetHandle(), 0) == -1)
{
return Error;
}
return Done;
}
Socket::Status UdpSocket::bind(unsigned short port, const IpAddress& address)
{
// Create the internal socket if it doesn't exist
create();
// Check if the address is valid
if ((address == IpAddress::None) || (address == IpAddress::Broadcast))
return Error;
// Bind the socket
sockaddr_in addr = priv::SocketImpl::createAddress(address.toInteger(), port);
if (::bind(getHandle(), reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == -1)
{
err() << "Failed to bind socket to port " << port << std::endl;
return Error;
}
return Done;
}
Socket::Status TcpSocket::connect(const IpAddress& remoteAddress, unsigned short remotePort, Time timeout)
{
// Disconnect the socket if it is already connected
disconnect();
// Create the internal socket if it doesn't exist
create();
// Create the remote address
sockaddr_in address = priv::SocketImpl::createAddress(remoteAddress.toInteger(), remotePort);
if (timeout <= Time::Zero)
{
// ----- We're not using a timeout: just try to connect -----
// Connect the socket
if (::connect(getHandle(), reinterpret_cast<sockaddr*>(&address), sizeof(address)) == -1)
return priv::SocketImpl::getErrorStatus();
// Connection succeeded
return Done;
}
else
{
// ----- We're using a timeout: we'll need a few tricks to make it work -----
// Save the previous blocking state
bool blocking = isBlocking();
// Switch to non-blocking to enable our connection timeout
if (blocking)
setBlocking(false);
// Try to connect to the remote address
if (::connect(getHandle(), reinterpret_cast<sockaddr*>(&address), sizeof(address)) >= 0)
{
// We got instantly connected! (it may no happen a lot...)
setBlocking(blocking);
return Done;
}
// Get the error status
Status status = priv::SocketImpl::getErrorStatus();
// If we were in non-blocking mode, return immediately
if (!blocking)
return status;
// Otherwise, wait until something happens to our socket (success, timeout or error)
if (status == Socket::NotReady)
{
// Setup the selector
fd_set selector;
FD_ZERO(&selector);
FD_SET(getHandle(), &selector);
// Setup the timeout
timeval time;
time.tv_sec = static_cast<long>(timeout.asMicroseconds() / 1000000);
time.tv_usec = static_cast<long>(timeout.asMicroseconds() % 1000000);
// Wait for something to write on our socket (which means that the connection request has returned)
if (select(static_cast<int>(getHandle() + 1), NULL, &selector, NULL, &time) > 0)
{
// At this point the connection may have been either accepted or refused.
// To know whether it's a success or a failure, we must check the address of the connected peer
if (getRemoteAddress() != IpAddress::None)
{
// Connection accepted
status = Done;
}
else
{
// Connection refused
status = priv::SocketImpl::getErrorStatus();
}
}
else
{
// Failed to connect before timeout is over
status = priv::SocketImpl::getErrorStatus();
}
}
// Switch back to blocking mode
setBlocking(true);
return status;
}
}
bool operator <(const IpAddress& left, const IpAddress& right)
{
return left.toInteger() < right.toInteger();
}
