Deleted common directory
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/* Copyright: (c) Kayne Ruse 2013-2015
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* 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
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* 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
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* distribution.
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*/
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#include "udp_network_utility.hpp"
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#include "serial_packet.hpp"
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#include "serial_utility.hpp"
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#include <stdexcept>
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//DOCS: memset() is used before sending a packet to remove old data; you don't want to send sensitive data over the network
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//NOTE: don't confuse SerialPacketBase with UDPpacket
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void UDPNetworkUtility::Open(int port) {
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socket = SDLNet_UDP_Open(port);
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packet = SDLNet_AllocPacket(PACKET_BUFFER_SIZE);
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if (!socket || !packet) {
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Close();
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throw(std::runtime_error("Failed to open UDPNetworkUtility"));
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}
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}
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void UDPNetworkUtility::Close() {
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SDLNet_UDP_Close(socket);
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SDLNet_FreePacket(packet);
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socket = nullptr;
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packet = nullptr;
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}
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//-------------------------
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//bind to a channel
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//-------------------------
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int UDPNetworkUtility::Bind(const char* ip, int port, int channel) {
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IPaddress add;
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if (SDLNet_ResolveHost(&add, ip, port) == -1) {
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throw(std::runtime_error("Failed to resolve a host"));
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}
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return Bind(add, channel);
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}
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int UDPNetworkUtility::Bind(IPaddress add, int channel) {
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int ret = SDLNet_UDP_Bind(socket, channel, &add);
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if (ret < 0) {
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throw(std::runtime_error("Failed to bind to a channel"));
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}
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return ret;
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}
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void UDPNetworkUtility::Unbind(int channel) {
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SDLNet_UDP_Unbind(socket, channel);
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}
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//-------------------------
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//send a buffer
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//-------------------------
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int UDPNetworkUtility::SendTo(const char* ip, int port, void* data, int len) {
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IPaddress add;
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if (SDLNet_ResolveHost(&add, ip, port) == -1) {
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throw(std::runtime_error("Failed to resolve a host"));
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}
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SendTo(add, data, len);
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}
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int UDPNetworkUtility::SendTo(IPaddress add, void* data, int len) {
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if (len > packet->maxlen) {
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throw(std::runtime_error("The buffer is to large for the UDPpacket"));
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}
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memset(packet->data, 0, packet->maxlen);
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memcpy(packet->data, data, len);
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packet->len = len;
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packet->address = add;
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int ret = SDLNet_UDP_Send(socket, -1, packet);
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if (ret <= 0) {
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throw(std::runtime_error("Failed to send a packet"));
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}
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return ret;
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}
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int UDPNetworkUtility::SendTo(int channel, void* data, int len) {
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if (len > packet->maxlen) {
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throw(std::runtime_error("The buffer is to large for the UDPpacket"));
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}
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memset(packet->data, 0, packet->maxlen);
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memcpy(packet->data, data, len);
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packet->len = len;
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int ret = SDLNet_UDP_Send(socket, channel, packet);
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if (ret <= 0) {
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throw(std::runtime_error("Failed to send a packet"));
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}
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return ret;
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}
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int UDPNetworkUtility::SendToAllChannels(void* data, int len) {
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if (len > packet->maxlen) {
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throw(std::runtime_error("The buffer is to large for the UDPpacket"));
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}
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memset(packet->data, 0, packet->maxlen);
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memcpy(packet->data, data, len);
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packet->len = len;
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int sent = 0;
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//send to all bound channels
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for (int i = 0; i < SDLNET_MAX_UDPCHANNELS; i++) {
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if (SDLNet_UDP_GetPeerAddress(socket, i)) {
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sent += SDLNet_UDP_Send(socket, i, packet);
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}
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}
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return sent;
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}
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int UDPNetworkUtility::Receive() {
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memset(packet->data, 0, packet->maxlen);
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int ret = SDLNet_UDP_Recv(socket, packet);
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if (ret < 0) {
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throw(std::runtime_error("Unknown network error occured"));
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}
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return ret;
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}
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//-------------------------
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//send a SerialPacketBase
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//-------------------------
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int UDPNetworkUtility::SendTo(const char* ip, int port, SerialPacketBase* serialPacket) {
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IPaddress add;
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if (SDLNet_ResolveHost(&add, ip, port) == -1) {
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throw(std::runtime_error("Failed to resolve a host"));
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}
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SendTo(add, serialPacket);
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}
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int UDPNetworkUtility::SendTo(IPaddress add, SerialPacketBase* serialPacket) {
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memset(packet->data, 0, packet->maxlen);
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serializePacket(packet->data, serialPacket);
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packet->len = PACKET_BUFFER_SIZE;
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packet->address = add;
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int ret = SDLNet_UDP_Send(socket, -1, packet);
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if (ret <= 0) {
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throw(std::runtime_error("Failed to send a packet"));
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}
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return ret;
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}
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int UDPNetworkUtility::SendTo(int channel, SerialPacketBase* serialPacket) {
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memset(packet->data, 0, packet->maxlen);
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serializePacket(packet->data, serialPacket);
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packet->len = PACKET_BUFFER_SIZE;
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int ret = SDLNet_UDP_Send(socket, channel, packet);
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if (ret <= 0) {
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throw(std::runtime_error("Failed to send a packet"));
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}
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return ret;
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}
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int UDPNetworkUtility::SendToAllChannels(SerialPacketBase* serialPacket) {
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memset(packet->data, 0, packet->maxlen);
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serializePacket(packet->data, serialPacket);
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packet->len = PACKET_BUFFER_SIZE;
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int sent = 0;
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//send to all bound channels
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for (int i = 0; i < SDLNET_MAX_UDPCHANNELS; i++) {
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if (SDLNet_UDP_GetPeerAddress(socket, i)) {
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sent += SDLNet_UDP_Send(socket, i, packet);
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}
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}
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return sent;
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}
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int UDPNetworkUtility::Receive(SerialPacketBase* serialPacket) {
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memset(packet->data, 0, packet->maxlen);
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int ret = SDLNet_UDP_Recv(socket, packet);
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deserializePacket(packet->data, serialPacket);
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serialPacket->srcAddress = packet->address;
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if (ret < 0) {
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throw(std::runtime_error("Unknown network error occured"));
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}
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return ret;
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}
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