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206 lines
8.3 KiB
C
206 lines
8.3 KiB
C
////////////////////////////////////////////////////////////
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//
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// SFML - Simple and Fast Multimedia Library
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// Copyright (C) 2007-2023 Laurent Gomila (laurent@sfml-dev.org)
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//
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// This software is provided 'as-is', without any express or implied warranty.
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented;
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// you must not claim that you wrote the original software.
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// If you use this software in a product, an acknowledgment
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// in the product documentation would be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such,
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// and must not be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source distribution.
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//
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////////////////////////////////////////////////////////////
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#pragma once
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include <SFML/Network/Export.h>
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#include <SFML/Network/IpAddress.h>
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#include <SFML/Network/SocketStatus.h>
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#include <SFML/Network/Types.h>
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#include <stddef.h>
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////////////////////////////////////////////////////////////
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/// \brief Create a new UDP socket
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///
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/// \return A new sfUdpSocket object
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API sfUdpSocket* sfUdpSocket_create(void);
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////////////////////////////////////////////////////////////
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/// \brief Destroy a UDP socket
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///
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/// \param socket UDP socket to destroy
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API void sfUdpSocket_destroy(sfUdpSocket* socket);
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////////////////////////////////////////////////////////////
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/// \brief Set the blocking state of a UDP listener
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///
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/// In blocking mode, calls will not return until they have
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/// completed their task. For example, a call to
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/// sfUDPSocket_receive in blocking mode won't return until
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/// new data was actually received.
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/// In non-blocking mode, calls will always return immediately,
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/// using the return code to signal whether there was data
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/// available or not.
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/// By default, all sockets are blocking.
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///
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/// \param socket UDP socket object
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/// \param blocking true to set the socket as blocking, false for non-blocking
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API void sfUdpSocket_setBlocking(sfUdpSocket* socket, bool blocking);
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////////////////////////////////////////////////////////////
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/// \brief Tell whether a UDP socket is in blocking or non-blocking mode
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///
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/// \param socket UDP socket object
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///
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/// \return true if the socket is blocking, false otherwise
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API bool sfUdpSocket_isBlocking(const sfUdpSocket* socket);
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////////////////////////////////////////////////////////////
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/// \brief Get the port to which a UDP socket is bound locally
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///
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/// If the socket is not bound to a port, this function
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/// returns 0.
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///
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/// \param socket UDP socket object
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///
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/// \return Port to which the socket is bound
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API unsigned short sfUdpSocket_getLocalPort(const sfUdpSocket* socket);
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////////////////////////////////////////////////////////////
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/// \brief Bind a UDP socket to a specific port
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///
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/// Binding the socket to a port is necessary for being
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/// able to receive data on that port.
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/// You can use the special value 0 to tell the
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/// system to automatically pick an available port, and then
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/// call sfUdpSocket_getLocalPort to retrieve the chosen port.
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///
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/// If there is no specific address to listen to, pass sfIpAddress_Any
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///
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/// \param socket UDP socket object
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/// \param port Port to bind the socket to
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/// \param address Address of the interface to bind to
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///
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/// \return Status code
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API sfSocketStatus sfUdpSocket_bind(sfUdpSocket* socket, unsigned short port, sfIpAddress address);
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////////////////////////////////////////////////////////////
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/// \brief Unbind a UDP socket from the local port to which it is bound
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///
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/// The port that the socket was previously using is immediately
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/// available after this function is called. If the
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/// socket is not bound to a port, this function has no effect.
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///
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/// \param socket UDP socket object
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API void sfUdpSocket_unbind(sfUdpSocket* socket);
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////////////////////////////////////////////////////////////
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/// \brief Send raw data to a remote peer with a UDP socket
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///
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/// Make sure that \a size is not greater than
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/// sfUdpSocket_maxDatagramSize(), otherwise this function will
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/// fail and no data will be sent.
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///
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/// \param socket UDP socket object
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/// \param data Pointer to the sequence of bytes to send
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/// \param size Number of bytes to send
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/// \param remoteAddress Address of the receiver
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/// \param remotePort Port of the receiver to send the data to
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///
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/// \return Status code
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API sfSocketStatus sfUdpSocket_send(sfUdpSocket* socket, const void* data, size_t size, sfIpAddress remoteAddress, unsigned short remotePort);
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////////////////////////////////////////////////////////////
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/// \brief Receive raw data from a remote peer with a UDP socket
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///
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/// In blocking mode, this function will wait until some
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/// bytes are actually received.
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/// Be careful to use a buffer which is large enough for
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/// the data that you intend to receive, if it is too small
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/// then an error will be returned and *all* the data will
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/// be lost.
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///
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/// \param socket UDP socket object
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/// \param data Pointer to the array to fill with the received bytes
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/// \param size Maximum number of bytes that can be received
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/// \param received This variable is filled with the actual number of bytes received
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/// \param remoteAddress Address of the peer that sent the data
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/// \param remotePort Port of the peer that sent the data
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///
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/// \return Status code
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API sfSocketStatus sfUdpSocket_receive(sfUdpSocket* socket, void* data, size_t size, size_t* received, sfIpAddress* remoteAddress, unsigned short* remotePort);
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////////////////////////////////////////////////////////////
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/// \brief Send a formatted packet of data to a remote peer with a UDP socket
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///
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/// Make sure that the packet size is not greater than
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/// sfUdpSocket_maxDatagramSize(), otherwise this function will
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/// fail and no data will be sent.
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///
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/// \param socket UDP socket object
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/// \param packet Packet to send
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/// \param remoteAddress Address of the receiver
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/// \param remotePort Port of the receiver to send the data to
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///
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/// \return Status code
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API sfSocketStatus sfUdpSocket_sendPacket(sfUdpSocket* socket, sfPacket* packet, sfIpAddress remoteAddress, unsigned short remotePort);
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////////////////////////////////////////////////////////////
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/// \brief Receive a formatted packet of data from a remote peer with a UDP socket
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///
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/// In blocking mode, this function will wait until the whole packet
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/// has been received.
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///
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/// \param packet Packet to fill with the received data
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/// \param remoteAddress Address of the peer that sent the data
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/// \param remotePort Port of the peer that sent the data
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///
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/// \return Status code
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API sfSocketStatus sfUdpSocket_receivePacket(sfUdpSocket* socket, sfPacket* packet, sfIpAddress* remoteAddress, unsigned short* remotePort);
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////////////////////////////////////////////////////////////
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/// \brief Return the maximum number of bytes that can be
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/// sent in a single UDP datagram
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///
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/// \return The maximum size of a UDP datagram (message)
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///
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////////////////////////////////////////////////////////////
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CSFML_NETWORK_API unsigned int sfUdpSocket_maxDatagramSize(void);
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