socket.cpp

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/** @file
 *  @author Bram de Greve (bram@cocamware.com)
 *  @author Tom De Muer (tom@cocamware.com)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *  
 *  The contents of this file are subject to the Common Public Attribution License 
 *  Version 1.0 (the "License"); you may not use this file except in compliance with 
 *  the License. You may obtain a copy of the License at 
 *  http://lass.sourceforge.net/cpal-license. The License is based on the 
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover 
 *  use of software over a computer network and provide for limited attribution for 
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent 
 *  with Exhibit B.
 *  
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 *  language governing rights and limitations under the License.
 *  
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *  
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *  
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2004-2011 the Initial Developer.
 *  All Rights Reserved.
 *  
 *  Contributor(s):
 *
 *  Alternatively, the contents of this file may be used under the terms of the 
 *  GNU General Public License Version 2 or later (the GPL), in which case the 
 *  provisions of GPL are applicable instead of those above.  If you wish to allow use
 *  of your version of this file only under the terms of the GPL and not to allow 
 *  others to use your version of this file under the CPAL, indicate your decision by 
 *  deleting the provisions above and replace them with the notice and other 
 *  provisions required by the GPL License. If you do not delete the provisions above,
 *  a recipient may use your version of this file under either the CPAL or the GPL.
 *  
 *  *** END LICENSE INFORMATION ***
 */
 
 
#include "lass_common.h"
#include "socket.h"
#include "../num/num_cast.h"
 
#if LASS_HAVE_SYS_SOCKET_H && !defined(LASS_IO_SOCKET_HAVE_LIBC)
#   define LASS_IO_SOCKET_HAVE_LIBC
#endif
 
#if defined(LASS_IO_SOCKET_HAVE_WINSOCK)
#   include "impl/socket_winsock.inl"
#elif defined(LASS_IO_SOCKET_HAVE_LIBC)
#   include "impl/socket_libc.inl"
#else
#   error "[LASS BUILD MSG] Socket not supported for this platform"
#endif
 
namespace lass
{
namespace io
{
 
Socket::Socket()
{
    pimpl_ = new impl::SocketImpl;
}
 
 
 
Socket::~Socket()
{
    LASS_ASSERT(pimpl_);
    delete pimpl_;
    pimpl_ = 0;
}
 
 
 
void Socket::open()
{
    LASS_ASSERT(pimpl_);
    pimpl_->openSocket();
}
 
 
 
void Socket::close()
{
    LASS_ASSERT(pimpl_);
    pimpl_->closeSocket();
}
 
 
 
void Socket::bind(TPort port)
{
    bind("", port);
}
 
 
 
void Socket::bind(const std::string& address, TPort port)
{
    LASS_ASSERT(pimpl_);
    pimpl_->bind(address, port);
}
 
 
 
/** Bind to the first available port in range [@a begin, @a end).
*  complexity: O(n)
*/
Socket::TPort Socket::bindInRange(TPort begin, TPort end)
{
    return bindInRange("", begin, end);
}
 
 
 
/** Bind to the first available port in range [@a begin, @a end).
*  complexity: O(n)
*/
Socket::TPort Socket::bindInRange(const std::string& address, TPort begin, TPort end)
{
    LASS_ASSERT(pimpl_);
    for (TPort port = begin; port < end; ++port)
    {
        try
        {
            pimpl_->bind(address, port);
            return port;
        }
        catch (const SocketError&)
        {
        }
    }
    LASS_THROW_EX(SocketError, "Failed to bind socket to any port in range [" << begin << ", " << end << ").");
}
 
 
 
void Socket::listen()
{
    LASS_ASSERT(pimpl_);
    pimpl_->listen();
}
 
 
 
void Socket::accept(Socket& connection) const
{
    LASS_ASSERT(pimpl_);
    LASS_ASSERT(connection.pimpl_);
    pimpl_->accept(connection.pimpl_);
}
 
 
 
void Socket::connect(const std::string& address, TPort port)
{
    LASS_ASSERT(pimpl_);
    pimpl_->connect(address, port);
}
 
 
 
std::string Socket::address() const
{
    LASS_ASSERT(pimpl_);
    return pimpl_->address();
}
 
 
 
Socket::TPort Socket::port() const
{
    LASS_ASSERT(pimpl_);
    return pimpl_->port();
}
 
 
 
int Socket::send(const void* begin, int length) const
{
    LASS_ASSERT(pimpl_);
    return pimpl_->send(begin, length);
}
 
 
 
const void* Socket::send(const void* begin, const void* end) const
{
    LASS_ASSERT(pimpl_);
    const char* first = static_cast<const char*>(begin);
    const char* last = static_cast<const char*>(end);
    const int length = num::numCast<int>(last - first);
    const int sent = pimpl_->send(first, length);
    LASS_ASSERT(sent >= 0);
    return first + sent;
}
 
 
 
int Socket::receive(void* begin, int length) const
{
    LASS_ASSERT(pimpl_);
    return pimpl_->receive(begin, length);
}
 
 
 
void* Socket::receive(void* begin, void* end) const
{
    LASS_ASSERT(pimpl_);
    char* first = static_cast<char*>(begin);
    char* last = static_cast<char*>(end);
    const int length = num::numCast<int>(last - first);
    const int sent = pimpl_->receive(first, length);
    LASS_ASSERT(sent >= 0);
    return first + sent;
}
 
 
 
int Socket::sizeSendBuffer() const
{
    LASS_ASSERT(pimpl_);
    return pimpl_->sizeSendBuffer();
}
 
 
 
void Socket::swap(Socket& other)
{
    std::swap(pimpl_, other.pimpl_);
}
 
 
 
}
}
 
// EOF