Merge eae65be6c2 into 7d158acc3b

Directory.Packages.props

@@ -36,6 +36,7 @@
     <PackageVersion Include="Ryujinx.Graphics.Vulkan.Dependencies.MoltenVK" Version="1.2.0" />
     <PackageVersion Include="Ryujinx.GtkSharp" Version="3.24.24.59-ryujinx" />
     <PackageVersion Include="Ryujinx.SDL2-CS" Version="2.30.0-build32" />
+    <PackageVersion Include="RyuSocks" Version="0.6.0-alpha" />
     <PackageVersion Include="securifybv.ShellLink" Version="0.1.0" />
     <PackageVersion Include="shaderc.net" Version="0.1.0" />
     <PackageVersion Include="SharpZipLib" Version="1.4.2" />

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/BsdContext.cs

@@ -103,7 +103,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
             {
                 lock (_lock)
                 {
-                    oldFile.Refcount++;
+                    oldFile.RefCount++;
 
                     return RegisterFileDescriptor(oldFile);
                 }
@@ -118,9 +118,9 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
 
             if (file != null)
             {
-                file.Refcount--;
+                file.RefCount--;
 
-                if (file.Refcount <= 0)
+                if (file.RefCount <= 0)
                 {
                     file.Dispose();
                 }

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/IClient.cs

@@ -1,6 +1,7 @@
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
 using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl;
+using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Proxy;
 using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Types;
 using Ryujinx.Memory;
 using System;
@@ -20,6 +21,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
         {
             EventFileDescriptorPollManager.Instance,
             ManagedSocketPollManager.Instance,
+            ManagedProxySocketPollManager.Instance,
         };
 
         private BsdContext _context;
@@ -95,10 +97,8 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
                 }
             }
 
-            ISocket newBsdSocket = new ManagedSocket(netDomain, (SocketType)type, protocol)
-            {
-                Blocking = !creationFlags.HasFlag(BsdSocketCreationFlags.NonBlocking),
-            };
+            ISocket newBsdSocket = ProxyManager.GetSocket(netDomain, (SocketType)type, protocol);
+            newBsdSocket.Blocking = !creationFlags.HasFlag(BsdSocketCreationFlags.NonBlocking);
 
             LinuxError errno = LinuxError.SUCCESS;
 

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/IFileDescriptor.cs

@@ -6,7 +6,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
     interface IFileDescriptor : IDisposable
     {
         bool Blocking { get; set; }
-        int Refcount { get; set; }
+        int RefCount { get; set; }
 
         LinuxError Read(out int readSize, Span<byte> buffer);
 

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/EventFileDescriptor.cs

@@ -32,7 +32,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
             UpdateEventStates();
         }
 
-        public int Refcount { get; set; }
+        public int RefCount { get; set; }
 
         public void Dispose()
         {

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/ManagedProxySocket.cs

@@ -0,0 +1,476 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Types;
+using RyuSocks;
+using RyuSocks.Auth;
+using RyuSocks.Commands;
+using RyuSocks.Types;
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Sockets;
+
+namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
+{
+    class ManagedProxySocket : ISocket
+    {
+        private static readonly Dictionary<AuthMethod, IProxyAuth> _authMethods = new()
+        {
+            { AuthMethod.NoAuth, new NoAuth() },
+        };
+
+        private readonly bool _isUdpSocket;
+        private readonly bool _acceptedConnection;
+
+        public SocksClient ProxyClient { get; }
+
+        public bool Blocking { get => ProxyClient.Blocking; set => ProxyClient.Blocking = value; }
+        public int RefCount { get; set; }
+
+        public IPEndPoint RemoteEndPoint => (IPEndPoint)ProxyClient.ProxiedRemoteEndPoint;
+        public IPEndPoint LocalEndPoint => (IPEndPoint)ProxyClient.ProxiedLocalEndPoint;
+
+        public AddressFamily AddressFamily => ProxyClient.AddressFamily;
+        public SocketType SocketType => ProxyClient.SocketType;
+        public ProtocolType ProtocolType => ProxyClient.ProtocolType;
+        public IntPtr Handle => throw new NotSupportedException("Can't get the handle of a proxy socket.");
+
+        public ManagedProxySocket(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType, EndPoint proxyEndpoint)
+        {
+            if (addressFamily != proxyEndpoint.AddressFamily && addressFamily != AddressFamily.Unspecified)
+            {
+                throw new ArgumentException(
+                    $"Invalid {nameof(System.Net.Sockets.AddressFamily)}", nameof(addressFamily));
+            }
+
+            if (socketType != SocketType.Stream && socketType != SocketType.Dgram)
+            {
+                throw new ArgumentException(
+                    $"Invalid {nameof(System.Net.Sockets.SocketType)}", nameof(socketType));
+            }
+
+            if (protocolType != ProtocolType.Tcp && protocolType != ProtocolType.Udp)
+            {
+                throw new ArgumentException(
+                    $"Invalid {nameof(System.Net.Sockets.ProtocolType)}", nameof(protocolType));
+            }
+
+            _isUdpSocket = socketType == SocketType.Dgram && protocolType == ProtocolType.Udp;
+
+            ProxyClient = proxyEndpoint switch
+            {
+                IPEndPoint ipEndPoint => new SocksClient(ipEndPoint) { OfferedAuthMethods = _authMethods },
+                DnsEndPoint dnsEndPoint => new SocksClient(dnsEndPoint) { OfferedAuthMethods = _authMethods },
+                _ => throw new ArgumentException($"Unsupported {nameof(EndPoint)} type", nameof(proxyEndpoint))
+            };
+
+            ProxyClient.Authenticate();
+
+            RefCount = 1;
+        }
+
+        private ManagedProxySocket(SocksClient proxyClient)
+        {
+            ProxyClient = proxyClient;
+            _acceptedConnection = true;
+            RefCount = 1;
+        }
+
+        private static LinuxError ToLinuxError(ReplyField proxyReply)
+        {
+            return proxyReply switch
+            {
+                ReplyField.Succeeded => LinuxError.SUCCESS,
+                ReplyField.ServerFailure => LinuxError.ECONNRESET,
+                ReplyField.ConnectionNotAllowed => LinuxError.ECONNREFUSED,
+                ReplyField.NetworkUnreachable => LinuxError.ENETUNREACH,
+                ReplyField.HostUnreachable => LinuxError.EHOSTUNREACH,
+                ReplyField.ConnectionRefused => LinuxError.ECONNREFUSED,
+                ReplyField.TTLExpired => LinuxError.EHOSTUNREACH,
+                ReplyField.CommandNotSupported => LinuxError.EOPNOTSUPP,
+                ReplyField.AddressTypeNotSupported => LinuxError.EAFNOSUPPORT,
+                _ => throw new ArgumentOutOfRangeException(nameof(proxyReply))
+            };
+        }
+
+        public void Dispose()
+        {
+            ProxyClient.Dispose();
+        }
+
+        public LinuxError Read(out int readSize, Span<byte> buffer)
+        {
+            return Receive(out readSize, buffer, BsdSocketFlags.None);
+        }
+
+        public LinuxError Write(out int writeSize, ReadOnlySpan<byte> buffer)
+        {
+            return Send(out writeSize, buffer, BsdSocketFlags.None);
+        }
+
+        public LinuxError Receive(out int receiveSize, Span<byte> buffer, BsdSocketFlags flags)
+        {
+            LinuxError result;
+            bool shouldBlockAfterOperation = false;
+
+            if (Blocking && flags.HasFlag(BsdSocketFlags.DontWait))
+            {
+                Blocking = false;
+                shouldBlockAfterOperation = true;
+            }
+
+            byte[] proxyBuffer = new byte[buffer.Length + ProxyClient.GetRequiredWrapperSpace()];
+
+            try
+            {
+                receiveSize = ProxyClient.Receive(
+                    proxyBuffer,
+                    WinSockHelper.ConvertBsdSocketFlags(flags),
+                    out SocketError errorCode
+                );
+
+                proxyBuffer[..receiveSize].CopyTo(buffer);
+
+                result = WinSockHelper.ConvertError((WsaError)errorCode);
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"An error occured while trying to receive data: {exception}"
+                );
+
+                receiveSize = -1;
+                result = ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                receiveSize = -1;
+                result = WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            if (shouldBlockAfterOperation)
+            {
+                Blocking = true;
+            }
+
+            return result;
+        }
+
+        public LinuxError ReceiveFrom(out int receiveSize, Span<byte> buffer, int size, BsdSocketFlags flags, out IPEndPoint remoteEndPoint)
+        {
+            LinuxError result;
+            remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
+            bool shouldBlockAfterOperation = false;
+
+            byte[] proxyBuffer = new byte[size + ProxyClient.GetRequiredWrapperSpace()];
+
+            if (Blocking && flags.HasFlag(BsdSocketFlags.DontWait))
+            {
+                Blocking = false;
+                shouldBlockAfterOperation = true;
+            }
+
+            try
+            {
+                EndPoint temp = new IPEndPoint(IPAddress.Any, 0);
+
+                receiveSize = ProxyClient.ReceiveFrom(proxyBuffer, WinSockHelper.ConvertBsdSocketFlags(flags), ref temp);
+
+                proxyBuffer[..receiveSize].CopyTo(buffer);
+
+                remoteEndPoint = (IPEndPoint)temp;
+                result = LinuxError.SUCCESS;
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"An error occured while trying to receive data: {exception}"
+                );
+
+                receiveSize = -1;
+                result = ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                receiveSize = -1;
+
+                result = WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            if (shouldBlockAfterOperation)
+            {
+                Blocking = true;
+            }
+
+            return result;
+        }
+
+        public LinuxError Send(out int sendSize, ReadOnlySpan<byte> buffer, BsdSocketFlags flags)
+        {
+            try
+            {
+                sendSize = ProxyClient.Send(buffer, WinSockHelper.ConvertBsdSocketFlags(flags));
+
+                return LinuxError.SUCCESS;
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"An error occured while trying to send data: {exception}"
+                );
+
+                sendSize = -1;
+
+                return ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                sendSize = -1;
+
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+        }
+
+        public LinuxError SendTo(out int sendSize, ReadOnlySpan<byte> buffer, int size, BsdSocketFlags flags, IPEndPoint remoteEndPoint)
+        {
+            try
+            {
+                // NOTE: sendSize might be larger than size and/or buffer.Length.
+                sendSize = ProxyClient.SendTo(buffer[..size], WinSockHelper.ConvertBsdSocketFlags(flags), remoteEndPoint);
+
+                return LinuxError.SUCCESS;
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"An error occured while trying to send data: {exception}"
+                );
+
+                sendSize = -1;
+
+                return ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                sendSize = -1;
+
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+        }
+
+        public LinuxError RecvMMsg(out int vlen, BsdMMsgHdr message, BsdSocketFlags flags, TimeVal timeout)
+        {
+            throw new NotImplementedException();
+        }
+
+        public LinuxError SendMMsg(out int vlen, BsdMMsgHdr message, BsdSocketFlags flags)
+        {
+            throw new NotImplementedException();
+        }
+
+        /// <summary>
+        /// Adapted from <see cref="ManagedSocket.GetSocketOption"/>
+        /// </summary>
+        public LinuxError GetSocketOption(BsdSocketOption option, SocketOptionLevel level, Span<byte> optionValue)
+        {
+            try
+            {
+                LinuxError result = WinSockHelper.ValidateSocketOption(option, level, write: false);
+
+                if (result != LinuxError.SUCCESS)
+                {
+                    Logger.Warning?.Print(LogClass.ServiceBsd, $"Invalid GetSockOpt Option: {option} Level: {level}");
+
+                    return result;
+                }
+
+                if (!WinSockHelper.TryConvertSocketOption(option, level, out SocketOptionName optionName))
+                {
+                    Logger.Warning?.Print(LogClass.ServiceBsd, $"Unsupported GetSockOpt Option: {option} Level: {level}");
+                    optionValue.Clear();
+
+                    return LinuxError.SUCCESS;
+                }
+
+                byte[] tempOptionValue = new byte[optionValue.Length];
+
+                ProxyClient.GetSocketOption(level, optionName, tempOptionValue);
+
+                tempOptionValue.AsSpan().CopyTo(optionValue);
+
+                return LinuxError.SUCCESS;
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+        }
+
+        /// <summary>
+        /// Adapted from <see cref="ManagedSocket.SetSocketOption"/>
+        /// </summary>
+        public LinuxError SetSocketOption(BsdSocketOption option, SocketOptionLevel level, ReadOnlySpan<byte> optionValue)
+        {
+            try
+            {
+                LinuxError result = WinSockHelper.ValidateSocketOption(option, level, write: true);
+
+                if (result != LinuxError.SUCCESS)
+                {
+                    Logger.Warning?.Print(LogClass.ServiceBsd, $"Invalid SetSockOpt Option: {option} Level: {level}");
+
+                    return result;
+                }
+
+                if (!WinSockHelper.TryConvertSocketOption(option, level, out SocketOptionName optionName))
+                {
+                    Logger.Warning?.Print(LogClass.ServiceBsd, $"Unsupported SetSockOpt Option: {option} Level: {level}");
+
+                    return LinuxError.SUCCESS;
+                }
+
+                byte[] value = optionValue.ToArray();
+
+                ProxyClient.SetSocketOption(level, optionName, value);
+
+                return LinuxError.SUCCESS;
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+        }
+
+        public bool Poll(int microSeconds, SelectMode mode)
+        {
+            return ProxyClient.Poll(microSeconds, mode);
+        }
+
+        public LinuxError Bind(IPEndPoint localEndPoint)
+        {
+            ProxyClient.RequestCommand = _isUdpSocket ? ProxyCommand.UdpAssociate : ProxyCommand.Bind;
+
+            try
+            {
+                ProxyClient.Bind(localEndPoint);
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"Request for {ProxyClient.RequestCommand} command failed: {exception}"
+                );
+
+                return ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            return LinuxError.SUCCESS;
+        }
+
+        public LinuxError Connect(IPEndPoint remoteEndPoint)
+        {
+            ProxyClient.RequestCommand = ProxyCommand.Connect;
+
+            try
+            {
+                ProxyClient.Connect(remoteEndPoint.Address, remoteEndPoint.Port);
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"Request for {ProxyClient.RequestCommand} command failed: {exception}"
+                );
+
+                return ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            return LinuxError.SUCCESS;
+        }
+
+        public LinuxError Listen(int backlog)
+        {
+            // NOTE: Only one client can connect with the default SOCKS5 commands.
+            if (ProxyClient.RequestCommand != ProxyCommand.Bind)
+            {
+                return LinuxError.EOPNOTSUPP;
+            }
+
+            return LinuxError.SUCCESS;
+        }
+
+        public LinuxError Accept(out ISocket newSocket)
+        {
+            newSocket = null;
+
+            if (ProxyClient.RequestCommand != ProxyCommand.Bind)
+            {
+                return LinuxError.EOPNOTSUPP;
+            }
+
+            // NOTE: Only one client can connect with the default SOCKS5 commands.
+            if (_acceptedConnection)
+            {
+                return LinuxError.EOPNOTSUPP;
+            }
+
+            try
+            {
+                SocksClient newProxyClient = ProxyClient.Accept();
+                newSocket = new ManagedProxySocket(newProxyClient);
+            }
+            catch (ProxyException exception)
+            {
+                Logger.Error?.Print(
+                    LogClass.ServiceBsd,
+                    $"Failed to accept client connection: {exception}"
+                );
+
+                return ToLinuxError(exception.ReplyCode);
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            return LinuxError.SUCCESS;
+        }
+
+        public void Disconnect()
+        {
+            ProxyClient.Disconnect();
+            ProxyClient.RequestCommand = 0;
+        }
+
+        public LinuxError Shutdown(BsdSocketShutdownFlags how)
+        {
+            try
+            {
+                ProxyClient.Shutdown((SocketShutdown)how);
+
+                return LinuxError.SUCCESS;
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+        }
+
+        public void Close()
+        {
+            ProxyClient.Close();
+            ProxyClient.RequestCommand = 0;
+        }
+    }
+}

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/ManagedProxySocketPollManager.cs

@@ -0,0 +1,213 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Types;
+using System.Collections.Generic;
+using System.Net.Sockets;
+
+namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
+{
+    class ManagedProxySocketPollManager : IPollManager
+    {
+        private static ManagedProxySocketPollManager _instance;
+
+        public static ManagedProxySocketPollManager Instance
+        {
+            get
+            {
+                _instance ??= new ManagedProxySocketPollManager();
+
+                return _instance;
+            }
+        }
+
+        public bool IsCompatible(PollEvent evnt)
+        {
+            return evnt.FileDescriptor is ManagedProxySocket;
+        }
+
+        public LinuxError Poll(List<PollEvent> events, int timeoutMilliseconds, out int updatedCount)
+        {
+            Dictionary<SelectMode, List<ManagedProxySocket>> eventDict = new()
+            {
+                { SelectMode.SelectRead, [] },
+                { SelectMode.SelectWrite, [] },
+                { SelectMode.SelectError, [] },
+            };
+
+            updatedCount = 0;
+
+            foreach (PollEvent evnt in events)
+            {
+                ManagedProxySocket socket = (ManagedProxySocket)evnt.FileDescriptor;
+
+                bool isValidEvent = evnt.Data.InputEvents == 0;
+
+                eventDict[SelectMode.SelectError].Add(socket);
+
+                if ((evnt.Data.InputEvents & PollEventTypeMask.Input) != 0)
+                {
+                    eventDict[SelectMode.SelectRead].Add(socket);
+
+                    isValidEvent = true;
+                }
+
+                if ((evnt.Data.InputEvents & PollEventTypeMask.UrgentInput) != 0)
+                {
+                    eventDict[SelectMode.SelectRead].Add(socket);
+
+                    isValidEvent = true;
+                }
+
+                if ((evnt.Data.InputEvents & PollEventTypeMask.Output) != 0)
+                {
+                    eventDict[SelectMode.SelectWrite].Add(socket);
+
+                    isValidEvent = true;
+                }
+
+                if (!isValidEvent)
+                {
+                    Logger.Warning?.Print(LogClass.ServiceBsd, $"Unsupported Poll input event type: {evnt.Data.InputEvents}");
+                    return LinuxError.EINVAL;
+                }
+            }
+
+            try
+            {
+                int actualTimeoutMicroseconds = timeoutMilliseconds == -1 ? -1 : timeoutMilliseconds * 1000;
+                int totalEvents = eventDict[SelectMode.SelectRead].Count + eventDict[SelectMode.SelectWrite].Count + eventDict[SelectMode.SelectError].Count;
+                // TODO: Maybe check all events first, wait for the timeout and then check the failed ones again?
+                int timeoutMicrosecondsPerEvent = actualTimeoutMicroseconds == -1 ? -1 : actualTimeoutMicroseconds / totalEvents;
+
+                foreach ((SelectMode selectMode, List<ManagedProxySocket> eventList) in eventDict)
+                {
+                    List<ManagedProxySocket> newEventList = [];
+
+                    foreach (ManagedProxySocket eventSocket in eventList)
+                    {
+                        if (eventSocket.Poll(timeoutMicrosecondsPerEvent, selectMode))
+                        {
+                            newEventList.Add(eventSocket);
+                        }
+                    }
+
+                    eventDict[selectMode] = newEventList;
+                }
+            }
+            catch (SocketException exception)
+            {
+                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            foreach (PollEvent evnt in events)
+            {
+                ManagedProxySocket socket = ((ManagedProxySocket)evnt.FileDescriptor);
+
+                PollEventTypeMask outputEvents = evnt.Data.OutputEvents & ~evnt.Data.InputEvents;
+
+                if (eventDict[SelectMode.SelectError].Contains(socket))
+                {
+                    outputEvents |= PollEventTypeMask.Error;
+
+                    if (!socket.ProxyClient.Connected || !socket.ProxyClient.IsBound)
+                    {
+                        outputEvents |= PollEventTypeMask.Disconnected;
+                    }
+                }
+
+                if (eventDict[SelectMode.SelectRead].Contains(socket))
+                {
+                    if ((evnt.Data.InputEvents & PollEventTypeMask.Input) != 0)
+                    {
+                        outputEvents |= PollEventTypeMask.Input;
+                    }
+                }
+
+                if (eventDict[SelectMode.SelectWrite].Contains(socket))
+                {
+                    outputEvents |= PollEventTypeMask.Output;
+                }
+
+                evnt.Data.OutputEvents = outputEvents;
+            }
+
+            updatedCount = eventDict[SelectMode.SelectRead].Count + eventDict[SelectMode.SelectWrite].Count + eventDict[SelectMode.SelectError].Count;
+
+            return LinuxError.SUCCESS;
+        }
+
+        public LinuxError Select(List<PollEvent> events, int timeout, out int updatedCount)
+        {
+            Dictionary<SelectMode, List<ManagedProxySocket>> eventDict = new()
+            {
+                { SelectMode.SelectRead, [] },
+                { SelectMode.SelectWrite, [] },
+                { SelectMode.SelectError, [] },
+            };
+
+            updatedCount = 0;
+
+            foreach (PollEvent pollEvent in events)
+            {
+                ManagedProxySocket socket = (ManagedProxySocket)pollEvent.FileDescriptor;
+
+                if (pollEvent.Data.InputEvents.HasFlag(PollEventTypeMask.Input))
+                {
+                    eventDict[SelectMode.SelectRead].Add(socket);
+                }
+
+                if (pollEvent.Data.InputEvents.HasFlag(PollEventTypeMask.Output))
+                {
+                    eventDict[SelectMode.SelectWrite].Add(socket);
+                }
+
+                if (pollEvent.Data.InputEvents.HasFlag(PollEventTypeMask.Error))
+                {
+                    eventDict[SelectMode.SelectError].Add(socket);
+                }
+            }
+
+            int totalEvents = eventDict[SelectMode.SelectRead].Count + eventDict[SelectMode.SelectWrite].Count + eventDict[SelectMode.SelectError].Count;
+            // TODO: Maybe check all events first, wait for the timeout and then check the failed ones again?
+            int timeoutMicrosecondsPerEvent = timeout == -1 ? -1 : timeout / totalEvents;
+
+            foreach ((SelectMode selectMode, List<ManagedProxySocket> eventList) in eventDict)
+            {
+                List<ManagedProxySocket> newEventList = [];
+
+                foreach (ManagedProxySocket eventSocket in eventList)
+                {
+                    if (eventSocket.Poll(timeoutMicrosecondsPerEvent, selectMode))
+                    {
+                        newEventList.Add(eventSocket);
+                    }
+                }
+
+                eventDict[selectMode] = newEventList;
+            }
+
+            updatedCount = eventDict[SelectMode.SelectRead].Count + eventDict[SelectMode.SelectWrite].Count + eventDict[SelectMode.SelectError].Count;
+
+            foreach (PollEvent pollEvent in events)
+            {
+                ManagedProxySocket socket = (ManagedProxySocket)pollEvent.FileDescriptor;
+
+                if (eventDict[SelectMode.SelectRead].Contains(socket))
+                {
+                    pollEvent.Data.OutputEvents |= PollEventTypeMask.Input;
+                }
+
+                if (eventDict[SelectMode.SelectWrite].Contains(socket))
+                {
+                    pollEvent.Data.OutputEvents |= PollEventTypeMask.Output;
+                }
+
+                if (eventDict[SelectMode.SelectError].Contains(socket))
+                {
+                    pollEvent.Data.OutputEvents |= PollEventTypeMask.Error;
+                }
+            }
+
+            return LinuxError.SUCCESS;
+        }
+    }
+}

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/ManagedSocket.cs

@@ -11,7 +11,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
 {
     class ManagedSocket : ISocket
     {
-        public int Refcount { get; set; }
+        public int RefCount { get; set; }
 
         public AddressFamily AddressFamily => Socket.AddressFamily;
 
@@ -32,57 +32,13 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
         public ManagedSocket(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
         {
             Socket = new Socket(addressFamily, socketType, protocolType);
-            Refcount = 1;
+            RefCount = 1;
         }
 
         private ManagedSocket(Socket socket)
         {
             Socket = socket;
-            Refcount = 1;
-        }
-
-        private static SocketFlags ConvertBsdSocketFlags(BsdSocketFlags bsdSocketFlags)
-        {
-            SocketFlags socketFlags = SocketFlags.None;
-
-            if (bsdSocketFlags.HasFlag(BsdSocketFlags.Oob))
-            {
-                socketFlags |= SocketFlags.OutOfBand;
-            }
-
-            if (bsdSocketFlags.HasFlag(BsdSocketFlags.Peek))
-            {
-                socketFlags |= SocketFlags.Peek;
-            }
-
-            if (bsdSocketFlags.HasFlag(BsdSocketFlags.DontRoute))
-            {
-                socketFlags |= SocketFlags.DontRoute;
-            }
-
-            if (bsdSocketFlags.HasFlag(BsdSocketFlags.Trunc))
-            {
-                socketFlags |= SocketFlags.Truncated;
-            }
-
-            if (bsdSocketFlags.HasFlag(BsdSocketFlags.CTrunc))
-            {
-                socketFlags |= SocketFlags.ControlDataTruncated;
-            }
-
-            bsdSocketFlags &= ~(BsdSocketFlags.Oob |
-                BsdSocketFlags.Peek |
-                BsdSocketFlags.DontRoute |
-                BsdSocketFlags.DontWait |
-                BsdSocketFlags.Trunc |
-                BsdSocketFlags.CTrunc);
-
-            if (bsdSocketFlags != BsdSocketFlags.None)
-            {
-                Logger.Warning?.Print(LogClass.ServiceBsd, $"Unsupported socket flags: {bsdSocketFlags}");
-            }
-
-            return socketFlags;
+            RefCount = 1;
         }
 
         public LinuxError Accept(out ISocket newSocket)
@@ -199,7 +155,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
                     shouldBlockAfterOperation = true;
                 }
 
-                receiveSize = Socket.Receive(buffer, ConvertBsdSocketFlags(flags));
+                receiveSize = Socket.Receive(buffer, WinSockHelper.ConvertBsdSocketFlags(flags));
 
                 result = LinuxError.SUCCESS;
             }
@@ -243,7 +199,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
                     return LinuxError.EOPNOTSUPP;
                 }
 
-                receiveSize = Socket.ReceiveFrom(buffer[..size], ConvertBsdSocketFlags(flags), ref temp);
+                receiveSize = Socket.ReceiveFrom(buffer[..size], WinSockHelper.ConvertBsdSocketFlags(flags), ref temp);
 
                 remoteEndPoint = (IPEndPoint)temp;
                 result = LinuxError.SUCCESS;
@@ -267,7 +223,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
         {
             try
             {
-                sendSize = Socket.Send(buffer, ConvertBsdSocketFlags(flags));
+                sendSize = Socket.Send(buffer, WinSockHelper.ConvertBsdSocketFlags(flags));
 
                 return LinuxError.SUCCESS;
             }
@@ -283,7 +239,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
         {
             try
             {
-                sendSize = Socket.SendTo(buffer[..size], ConvertBsdSocketFlags(flags), remoteEndPoint);
+                sendSize = Socket.SendTo(buffer[..size], WinSockHelper.ConvertBsdSocketFlags(flags), remoteEndPoint);
 
                 return LinuxError.SUCCESS;
             }
@@ -493,7 +449,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
 
             try
             {
-                int receiveSize = Socket.Receive(ConvertMessagesToBuffer(message), ConvertBsdSocketFlags(flags), out SocketError socketError);
+                int receiveSize = Socket.Receive(ConvertMessagesToBuffer(message), WinSockHelper.ConvertBsdSocketFlags(flags), out SocketError socketError);
 
                 if (receiveSize > 0)
                 {
@@ -531,7 +487,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
 
             try
             {
-                int sendSize = Socket.Send(ConvertMessagesToBuffer(message), ConvertBsdSocketFlags(flags), out SocketError socketError);
+                int sendSize = Socket.Send(ConvertMessagesToBuffer(message), WinSockHelper.ConvertBsdSocketFlags(flags), out SocketError socketError);
 
                 if (sendSize > 0)
                 {

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/WinSockHelper.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Common.Logging;
 using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Types;
 using System;
 using System.Collections.Generic;
@@ -343,5 +344,49 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
 
             return LinuxError.SUCCESS;
         }
+
+        public static SocketFlags ConvertBsdSocketFlags(BsdSocketFlags bsdSocketFlags)
+        {
+            SocketFlags socketFlags = SocketFlags.None;
+
+            if (bsdSocketFlags.HasFlag(BsdSocketFlags.Oob))
+            {
+                socketFlags |= SocketFlags.OutOfBand;
+            }
+
+            if (bsdSocketFlags.HasFlag(BsdSocketFlags.Peek))
+            {
+                socketFlags |= SocketFlags.Peek;
+            }
+
+            if (bsdSocketFlags.HasFlag(BsdSocketFlags.DontRoute))
+            {
+                socketFlags |= SocketFlags.DontRoute;
+            }
+
+            if (bsdSocketFlags.HasFlag(BsdSocketFlags.Trunc))
+            {
+                socketFlags |= SocketFlags.Truncated;
+            }
+
+            if (bsdSocketFlags.HasFlag(BsdSocketFlags.CTrunc))
+            {
+                socketFlags |= SocketFlags.ControlDataTruncated;
+            }
+
+            bsdSocketFlags &= ~(BsdSocketFlags.Oob |
+                                BsdSocketFlags.Peek |
+                                BsdSocketFlags.DontRoute |
+                                BsdSocketFlags.DontWait |
+                                BsdSocketFlags.Trunc |
+                                BsdSocketFlags.CTrunc);
+
+            if (bsdSocketFlags != BsdSocketFlags.None)
+            {
+                Logger.Warning?.Print(LogClass.ServiceBsd, $"Unsupported socket flags: {bsdSocketFlags}");
+            }
+
+            return socketFlags;
+        }
     }
 }

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Proxy/ProxyManager.cs

@@ -0,0 +1,53 @@
+using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Sockets;
+using System.Runtime.CompilerServices;
+
+namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Proxy
+{
+    public static class ProxyManager
+    {
+        private static readonly ConcurrentDictionary<string, EndPoint> _proxyEndpoints = new();
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static string GetKey(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
+        {
+            return string.Join("-", new[] { (int)addressFamily, (int)socketType, (int)protocolType });
+        }
+
+        internal static ISocket GetSocket(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
+        {
+            if (_proxyEndpoints.TryGetValue(GetKey(addressFamily, socketType, protocolType), out EndPoint endPoint))
+            {
+                return new ManagedProxySocket(addressFamily, socketType, protocolType, endPoint);
+            }
+
+            return new ManagedSocket(addressFamily, socketType, protocolType);
+        }
+
+        public static void AddOrUpdate(EndPoint endPoint,
+            AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
+        {
+            _proxyEndpoints[GetKey(addressFamily, socketType, protocolType)] = endPoint;
+        }
+
+        public static void AddOrUpdate(IPAddress address, int port,
+            AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
+        {
+            _proxyEndpoints[GetKey(addressFamily, socketType, protocolType)] = new IPEndPoint(address, port);
+        }
+
+        public static void AddOrUpdate(string host, int port,
+            AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
+        {
+            _proxyEndpoints[GetKey(addressFamily, socketType, protocolType)] = new DnsEndPoint(host, port);
+        }
+
+        public static bool Remove(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)
+        {
+            return _proxyEndpoints.Remove(GetKey(addressFamily, socketType, protocolType), out _);
+        }
+    }
+}

src/Ryujinx.HLE/HOS/Services/Ssl/SslService/SslManagedSocketConnection.cs

@@ -1,6 +1,7 @@
 using Ryujinx.HLE.HOS.Services.Sockets.Bsd;
 using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl;
 using Ryujinx.HLE.HOS.Services.Ssl.Types;
+using RyuSocks;
 using System;
 using System.IO;
 using System.Net;
@@ -111,12 +112,25 @@ namespace Ryujinx.HLE.HOS.Services.Ssl.SslService
             {
                 return hostName;
             }
+            // Thrown by ManagedProxySocket when accessing RemoteEndPoint before connecting to a remote.
+            catch (NullReferenceException)
+            {
+                return hostName;
+            }
         }
 
         public ResultCode Handshake(string hostName)
         {
             StartSslOperation();
-            _stream = new SslStream(new NetworkStream(((ManagedSocket)Socket).Socket, false), false, null, null);
+
+            Stream socketStream = Socket switch
+            {
+                ManagedSocket managedSocket => new NetworkStream(managedSocket.Socket, false),
+                ManagedProxySocket proxySocket => new SocksClientStream(proxySocket.ProxyClient, false),
+                _ => throw new NotSupportedException($"{typeof(Socket)} is not supported.")
+            };
+
+            _stream = new SslStream(socketStream, false, null, null);
             hostName = RetrieveHostName(hostName);
             _stream.AuthenticateAsClient(hostName, null, TranslateSslVersion(_sslVersion), false);
             EndSslOperation();

src/Ryujinx.HLE/Ryujinx.HLE.csproj

@@ -29,6 +29,7 @@
     <PackageReference Include="SkiaSharp" />
     <PackageReference Include="SkiaSharp.NativeAssets.Linux" />
     <PackageReference Include="NetCoreServer" />
+    <PackageReference Include="RyuSocks" />
   </ItemGroup>
 
   <ItemGroup>