Start implementing download protocol.
This commit is contained in:
momo5502
parent
8f9b703dbb
commit
5624390e67
@ -21,6 +21,7 @@ namespace Components
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Loader::Register(new Console());
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Loader::Register(new Console());
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Loader::Register(new IPCPipe());
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Loader::Register(new IPCPipe());
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Loader::Register(new Network());
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Loader::Register(new Network());
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Loader::Register(new Download());
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Loader::Register(new Playlist());
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Loader::Register(new Playlist());
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Loader::Register(new RawFiles());
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Loader::Register(new RawFiles());
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Loader::Register(new Renderer());
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Loader::Register(new Renderer());
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@ -33,6 +33,7 @@ namespace Components
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#include "Modules\IPCPipe.hpp"
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#include "Modules\IPCPipe.hpp"
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#include "Modules\Network.hpp"
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#include "Modules\Network.hpp"
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#include "Modules\Party.hpp" // Destroys the order, but requires network classes :D
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#include "Modules\Party.hpp" // Destroys the order, but requires network classes :D
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#include "Modules\Download.hpp"
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#include "Modules\Playlist.hpp"
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#include "Modules\Playlist.hpp"
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#include "Modules\RawFiles.hpp"
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#include "Modules\RawFiles.hpp"
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#include "Modules\Renderer.hpp"
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#include "Modules\Renderer.hpp"
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422
src/Components/Modules/Download.cpp
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422
src/Components/Modules/Download.cpp
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@ -0,0 +1,422 @@
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#include "STDInclude.hpp"
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namespace Components
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{
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Download::Container Download::DataContainer;
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Download::Container::DownloadCL* Download::FindClientDownload(int id)
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{
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for (auto &download : Download::DataContainer.ClientDownloads)
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{
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if (download.id == id)
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{
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return &download;
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}
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}
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return nullptr;
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}
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Download::Container::DownloadSV* Download::FindServerDownload(int id)
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{
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for (auto &download : Download::DataContainer.ServerDownloads)
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{
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if (download.id == id)
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{
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return &download;
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}
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}
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return nullptr;
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}
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void Download::RemoveClientDownload(int id)
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{
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for (auto i = Download::DataContainer.ClientDownloads.begin(); i != Download::DataContainer.ClientDownloads.end(); i++)
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{
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if (i->id == id)
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{
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Download::DataContainer.ClientDownloads.erase(i);
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return;
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}
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}
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}
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void Download::RemoveServerDownload(int id)
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{
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for (auto i = Download::DataContainer.ServerDownloads.begin(); i != Download::DataContainer.ServerDownloads.end(); i++)
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{
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if (i->id == id)
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{
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Download::DataContainer.ServerDownloads.erase(i);
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return;
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}
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}
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}
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bool Download::HasSentPacket(Download::Container::DownloadSV* download, int packet)
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{
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for (auto sentPacket : download->sentParts)
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{
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if (packet == sentPacket)
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{
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return true;
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}
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}
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return false;
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}
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bool Download::HasReceivedPacket(Download::Container::DownloadCL* download, int packet)
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{
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if (download->parts.size())
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{
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for (auto i = download->parts.begin(); i != download->parts.end(); i++)
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{
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if (i->first == packet)
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{
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return true;
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}
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}
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}
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return false;
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}
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bool Download::HasReceivedAllPackets(Download::Container::DownloadCL* download)
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{
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for (int i = 0; i < download->maxParts; i++)
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{
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if (!Download::HasReceivedPacket(download, i))
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{
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return false;
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}
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}
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return true;
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}
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int Download::ReadPacketId(std::string &data)
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{
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int id = *(int*)data.data();
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data = std::string(data.data() + sizeof(int), data.size() - sizeof(int));
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return id;
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}
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// Client handlers
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void Download::AckRequest(Network::Address target, std::string data)
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{
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if (data.size() < sizeof(Download::Container::AckRequest)) return; // Drop invalid packets, if they were important, we'll re-request them later
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Download::Container::AckRequest* request = (Download::Container::AckRequest*)data.data();
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if (data.size() < (sizeof(Download::Container::AckRequest) + request->length)) return; // Again, drop invalid packets
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auto download = Download::FindClientDownload(request->id);
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if (download && download->target == target && !download->acknowledged)
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{
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std::string challenge(data.data() + sizeof(Download::Container::AckRequest), request->length);
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download->acknowledged = true;
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download->lastPing = Game::Com_Milliseconds();
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download->maxParts = request->maxPackets;
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std::string packet = "dlAckResponse\n";
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packet.append(reinterpret_cast<char*>(&download->id), sizeof(int));
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packet.append(challenge);
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Network::SendRaw(target, packet);
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}
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}
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void Download::PacketResponse(Network::Address target, std::string data)
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{
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if (data.size() < sizeof(Download::Container::Packet)) return; // Drop invalid packets, if they were important, we'll re-request them later
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Download::Container::Packet* packet = (Download::Container::Packet*)data.data();
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if (data.size() < (sizeof(Download::Container::Packet) + packet->length)) return; // Again, drop invalid packets
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auto download = Download::FindClientDownload(packet->id);
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if (download && download->target == target)
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{
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download->lastPing = Game::Com_Milliseconds();
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std::string packetData(data.data() + sizeof(Download::Container::Packet), packet->length);
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if (packet->hash == Utils::OneAtATime(packetData.data(), packetData.size()))
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{
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download->parts[packet->partId] = packetData;
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if (Download::HasReceivedAllPackets(download))
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{
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download->successCallback(download->id, Download::AssembleBuffer(download));
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Download::RemoveClientDownload(download->id);
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}
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}
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}
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}
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// Server handlers
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void Download::AckResponse(Network::Address target, std::string data)
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{
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int id = Download::ReadPacketId(data);
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std::string challenge = Utils::ParseChallenge(data); // TODO: Maybe optimize this to ensure length matches
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auto download = Download::FindServerDownload(id);
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if (download && download->target == target)
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{
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if (download->challenge != challenge)
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{
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Logger::Print("Invalid download challenge!\n");
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Download::RemoveServerDownload(id);
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}
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else
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{
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download->lastPing = Game::Com_Milliseconds();
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download->acknowledged = true;
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}
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}
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}
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void Download::MissingRequest(Network::Address target, std::string data)
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{
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int id = Download::ReadPacketId(data);
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auto download = Download::FindServerDownload(id);
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if (download && download->target == target)
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{
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while ((data.size() % 4) >= 4)
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{
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Download::MarkPacketAsDirty(download, *(int*)data.data());
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data = data.substr(4);
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}
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}
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}
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void Download::DownloadRequest(Network::Address target, std::string data)
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{
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int id = Download::ReadPacketId(data);
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Download::Container::DownloadSV download;
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download.id = id;
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download.target = target;
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download.acknowledged = false;
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download.startTime = Game::Com_Milliseconds();
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download.lastPing = Game::Com_Milliseconds();
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download.maxParts = 0;
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// Generate random 40kb buffer
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for (int i = 0; i < 10000; i++)
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{
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download.buffer.append(Utils::VA("%i", i));
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}
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download.maxParts = download.buffer.size() / PACKET_SIZE;
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if (download.buffer.size() % PACKET_SIZE) download.maxParts++;
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download.challenge = Utils::VA("%X", Game::Com_Milliseconds());
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Download::Container::AckRequest request;
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request.id = id;
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request.maxPackets = download.maxParts;
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request.length = download.challenge.size();
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std::string packet = "dlAckRequest\n";
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packet.append(reinterpret_cast<char*>(&request), sizeof(request));
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packet.append(download.challenge);
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Download::DataContainer.ServerDownloads.push_back(download);
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Network::SendRaw(target, packet);
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}
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std::string Download::AssembleBuffer(Download::Container::DownloadCL* download)
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{
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std::string buffer;
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for (int i = 0; i < download->maxParts; i++)
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{
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if (!Download::HasReceivedPacket(download, i)) return "";
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buffer.append(download->parts[i]);
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}
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return buffer;
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}
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void Download::RequestMissingPackets(Download::Container::DownloadCL* download, std::vector<int> packets)
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{
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if (packets.size())
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{
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std::string data = "dlMissRequest\n";
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data.append(reinterpret_cast<char*>(&download->id), sizeof(int));
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for (auto &packet : packets)
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{
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data.append((char*)&packet, sizeof(int));
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}
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Network::SendRaw(download->target, data);
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}
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}
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void Download::MarkPacketAsDirty(Download::Container::DownloadSV* download, int packet)
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{
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if (download->sentParts.size())
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{
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for (auto i = download->sentParts.begin(); i != download->sentParts.end(); i++)
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{
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if (*i == packet)
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{
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download->sentParts.erase(i);
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i = download->sentParts.begin();
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}
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}
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}
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}
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void Download::SendPacket(Download::Container::DownloadSV* download, int packet)
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{
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if (!download || packet < download->maxParts) return;
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download->lastPing = Game::Com_Milliseconds();
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download->sentParts.push_back(packet);
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Download::Container::Packet packetContainer;
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packetContainer.id = download->id;
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packetContainer.partId = packet;
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int size = ((packet + 1) == download->maxParts ? (download->buffer.size() % PACKET_SIZE) : PACKET_SIZE);
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size = (size == 0 ? PACKET_SIZE : size); // If remaining data equals packet PACKET_SIZE, size would be 0, so adjust it.
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std::string data(download->buffer.data() + (packet * PACKET_SIZE), size);
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packetContainer.length = data.size();
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packetContainer.hash = Utils::OneAtATime(data.data(), data.size());
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std::string response = "dlPacketResponse\n";
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response.append((char*)&packetContainer, sizeof(packetContainer));
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response.append(data);
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Network::SendRaw(download->target, response);
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}
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void Download::Frame()
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{
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if (Download::DataContainer.ClientDownloads.size())
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{
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for (auto i = Download::DataContainer.ClientDownloads.begin(); i != Download::DataContainer.ClientDownloads.end(); i++)
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{
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if ((Game::Com_Milliseconds() - i->lastPing) > (DOWNLOAD_TIMEOUT * 2))
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{
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i->failureCallback(i->id);
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Download::DataContainer.ClientDownloads.erase(i);
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return;
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}
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// Request missing parts
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if ((Game::Com_Milliseconds() - i->lastPing) > DOWNLOAD_TIMEOUT)
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{
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std::vector<int> missingPackets;
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for (int j = 0; j < i->maxParts; j++)
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{
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if (!Download::HasReceivedPacket(&*i, j))
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{
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missingPackets.push_back(j);
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}
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}
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}
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}
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}
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if (Download::DataContainer.ServerDownloads.size())
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{
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for (auto i = Download::DataContainer.ServerDownloads.begin(); i != Download::DataContainer.ServerDownloads.end(); i++)
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{
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if ((Game::Com_Milliseconds() - i->lastPing) > (DOWNLOAD_TIMEOUT * 3))
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{
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Download::DataContainer.ServerDownloads.erase(i);
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return;
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}
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int packets = 0;
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for (int j = 0; j < i->maxParts && packets <= FRAME_PACKET_LIMIT; j++)
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{
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if (!Download::HasSentPacket(&*i, j))
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{
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Download::SendPacket(&*i, j);
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packets++;
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}
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}
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}
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}
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}
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int Download::Get(Network::Address target, std::string file, std::function<void(int, std::string)> successCallback, std::function<void(int)> failureCallback)
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{
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Download::Container::DownloadCL download;
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download.id = Game::Com_Milliseconds();
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download.target = target;
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download.acknowledged = false;
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download.startTime = Game::Com_Milliseconds();
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download.lastPing = Game::Com_Milliseconds();
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download.maxParts = 0;
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download.failureCallback = failureCallback;
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download.successCallback = successCallback;
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Download::DataContainer.ClientDownloads.push_back(download);
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std::string response = "dlRequest\n";
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response.append((char*)&download.id, sizeof(int));
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response.append(file);
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Network::SendRaw(target, response);
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return download.id;
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}
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Download::Download()
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{
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return;
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// Frame handlers
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if (Dedicated::IsDedicated())
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{
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Dedicated::OnFrame(Download::Frame);
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}
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else
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{
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Renderer::OnFrame(Download::Frame);
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}
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// Register client handlers
|
||||||
|
Network::Handle("dlAckRequest", Download::AckRequest);
|
||||||
|
Network::Handle("dlPacketResponse", Download::PacketResponse);
|
||||||
|
|
||||||
|
// Register server handlers
|
||||||
|
Network::Handle("dlAckResponse", Download::AckResponse);
|
||||||
|
Network::Handle("dlMissRequest", Download::MissingRequest);
|
||||||
|
Network::Handle("dlAckResponse", Download::AckResponse);
|
||||||
|
Network::Handle("dlRequest", Download::DownloadRequest);
|
||||||
|
|
||||||
|
Command::Add("zob", [] (Command::Params params)
|
||||||
|
{
|
||||||
|
Logger::Print("Requesting!\n");
|
||||||
|
Download::Get(Network::Address("192.168.0.23:28960"), "test", [] (int id, std::string data)
|
||||||
|
{
|
||||||
|
Logger::Print("Download succeeded!\n");
|
||||||
|
}, [] (int id)
|
||||||
|
{
|
||||||
|
Logger::Print("Download failed!\n");
|
||||||
|
});
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
Download::~Download()
|
||||||
|
{
|
||||||
|
Download::DataContainer.ServerDownloads.clear();
|
||||||
|
Download::DataContainer.ClientDownloads.clear();
|
||||||
|
}
|
||||||
|
}
|
||||||
93
src/Components/Modules/Download.hpp
Normal file
93
src/Components/Modules/Download.hpp
Normal file
@ -0,0 +1,93 @@
|
|||||||
|
#define FRAME_PACKET_LIMIT 10
|
||||||
|
#define DOWNLOAD_TIMEOUT 2500
|
||||||
|
#define PACKET_SIZE 1000
|
||||||
|
|
||||||
|
namespace Components
|
||||||
|
{
|
||||||
|
class Download : public Component
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
Download();
|
||||||
|
~Download();
|
||||||
|
const char* GetName() { return "Download"; };
|
||||||
|
|
||||||
|
static int Get(Network::Address target, std::string file, std::function<void(int, std::string)> successCallback, std::function<void(int)> failureCallback);
|
||||||
|
|
||||||
|
private:
|
||||||
|
struct Container
|
||||||
|
{
|
||||||
|
struct DownloadCL
|
||||||
|
{
|
||||||
|
int id;
|
||||||
|
int startTime;
|
||||||
|
int lastPing;
|
||||||
|
bool acknowledged;
|
||||||
|
int maxParts;
|
||||||
|
Network::Address target;
|
||||||
|
std::map<int, std::string> parts;
|
||||||
|
std::function<void(int)> failureCallback;
|
||||||
|
std::function<void(int, std::string)> successCallback;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct DownloadSV
|
||||||
|
{
|
||||||
|
int id;
|
||||||
|
int startTime;
|
||||||
|
int lastPing;
|
||||||
|
bool acknowledged;
|
||||||
|
std::vector<int> sentParts;
|
||||||
|
int maxParts;
|
||||||
|
Network::Address target;
|
||||||
|
std::string challenge;
|
||||||
|
std::string buffer;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct Packet
|
||||||
|
{
|
||||||
|
int id;
|
||||||
|
int partId;
|
||||||
|
int length;
|
||||||
|
unsigned int hash;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct AckRequest
|
||||||
|
{
|
||||||
|
int id;
|
||||||
|
int maxPackets;
|
||||||
|
int length;
|
||||||
|
};
|
||||||
|
|
||||||
|
std::vector<DownloadCL> ClientDownloads;
|
||||||
|
std::vector<DownloadSV> ServerDownloads;
|
||||||
|
};
|
||||||
|
|
||||||
|
static void Frame();
|
||||||
|
static Container DataContainer;
|
||||||
|
|
||||||
|
// Client handlers
|
||||||
|
static void AckRequest(Network::Address target, std::string data);
|
||||||
|
static void PacketResponse(Network::Address target, std::string data);
|
||||||
|
|
||||||
|
// Server handlers
|
||||||
|
static void AckResponse(Network::Address target, std::string data);
|
||||||
|
static void MissingRequest(Network::Address target, std::string data);
|
||||||
|
static void DownloadRequest(Network::Address target, std::string data);
|
||||||
|
|
||||||
|
// Helper functions
|
||||||
|
static Container::DownloadCL* FindClientDownload(int id);
|
||||||
|
static Container::DownloadSV* FindServerDownload(int id);
|
||||||
|
|
||||||
|
static void RemoveClientDownload(int id);
|
||||||
|
static void RemoveServerDownload(int id);
|
||||||
|
|
||||||
|
static bool HasSentPacket(Container::DownloadSV* download, int packet);
|
||||||
|
static bool HasReceivedPacket(Container::DownloadCL* download, int packet);
|
||||||
|
static bool HasReceivedAllPackets(Container::DownloadCL* download);
|
||||||
|
static std::string AssembleBuffer(Container::DownloadCL* download);
|
||||||
|
static void RequestMissingPackets(Container::DownloadCL* download, std::vector<int> packets);
|
||||||
|
|
||||||
|
static void MarkPacketAsDirty(Container::DownloadSV* download, int packet);
|
||||||
|
static void SendPacket(Container::DownloadSV* download, int packet);
|
||||||
|
static int ReadPacketId(std::string &data);
|
||||||
|
};
|
||||||
|
}
|
||||||
@ -62,7 +62,7 @@ namespace Utils
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
unsigned int OneAtATime(char *key, size_t len)
|
unsigned int OneAtATime(const char *key, size_t len)
|
||||||
{
|
{
|
||||||
unsigned int hash, i;
|
unsigned int hash, i;
|
||||||
for (hash = i = 0; i < len; ++i)
|
for (hash = i = 0; i < len; ++i)
|
||||||
|
|||||||
@ -5,7 +5,7 @@ namespace Utils
|
|||||||
bool EndsWith(const char* heystack, const char* needle);
|
bool EndsWith(const char* heystack, const char* needle);
|
||||||
std::vector<std::string> Explode(const std::string& str, char delim);
|
std::vector<std::string> Explode(const std::string& str, char delim);
|
||||||
void Replace(std::string &string, std::string find, std::string replace);
|
void Replace(std::string &string, std::string find, std::string replace);
|
||||||
unsigned int OneAtATime(char *key, size_t len);
|
unsigned int OneAtATime(const char *key, size_t len);
|
||||||
std::string <rim(std::string &s);
|
std::string <rim(std::string &s);
|
||||||
std::string &RTrim(std::string &s);
|
std::string &RTrim(std::string &s);
|
||||||
std::string &Trim(std::string &s);
|
std::string &Trim(std::string &s);
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user