.net 8 使用 quic 协议通讯

debian环境安装 quic支持

# 1. 添加unstable仓库（如果您使用的是Debian的不稳定分支）
sudo apt install apt-transport-https ca-certificates
sudo wget -O /etc/apt/trusted.gpg.d/microsoft.gpg https://packages.microsoft.com/keys/microsoft.asc
echo "deb [arch=amd64] https://packages.microsoft.com/debian/$(lsb_release -cs) prod-unstable main" | \
     sudo tee /etc/apt/sources.list.d/msprod.list
 
# 2. 更新包列表
sudo apt update
 
# 3. 安装libmsquic
sudo apt install libmsquic

window环境要求

要求Windows 11、Windows Server 2022 或更新版本

代码

using System.Net.Quic;
using System.Net.Security;
using System.Net;
using System.Runtime.Versioning;
using System.Security.Cryptography.X509Certificates;
using System.Security.Cryptography;
using System.Buffers;
using System.Reflection.PortableExecutable;
using System.IO.Pipelines;
using System.Text;

namespace ConsoleApp1
{
    internal class Program
    {
        [SupportedOSPlatform("linux")]
        [SupportedOSPlatform("windows")]
        [RequiresPreviewFeatures]
        static async Task Main(string[] args)
        {
            // 创建 QuicListener
            var listener = await QuicListener.ListenAsync(new QuicListenerOptions
            {
                ApplicationProtocols = new List<SslApplicationProtocol> { SslApplicationProtocol.Http3 },
                ListenEndPoint = new IPEndPoint(IPAddress.Loopback, 9999),
                ConnectionOptionsCallback = (connection, ssl, token) => ValueTask.FromResult(new QuicServerConnectionOptions()
                {
                    DefaultStreamErrorCode = 0,
                    DefaultCloseErrorCode = 0,
                    ServerAuthenticationOptions = new SslServerAuthenticationOptions()
                    {
                        ApplicationProtocols = new List<SslApplicationProtocol>() { SslApplicationProtocol.Http3 },
                        ServerCertificate = GenerateManualCertificate()//生成证书
                    }
                })
            });

            _ = Task.Run(async () =>
            {
                Console.WriteLine("Quic Client Running...");

                await Task.Delay(1000);

                // 连接到服务端
                var connection = await QuicConnection.ConnectAsync(new QuicClientConnectionOptions
                {
                    DefaultCloseErrorCode = 0,
                    DefaultStreamErrorCode = 0,
                    RemoteEndPoint = new IPEndPoint(IPAddress.Loopback, 9999),
                    ClientAuthenticationOptions = new SslClientAuthenticationOptions
                    {
                        ApplicationProtocols = new List<SslApplicationProtocol> { SslApplicationProtocol.Http3 },
                        RemoteCertificateValidationCallback = (sender, certificate, chain, errors) =>
                        {
                            return true;
                        }
                    }
                });

                // 打开一个出站的双向流
                var stream = await connection.OpenOutboundStreamAsync(QuicStreamType.Bidirectional);
                stream.ReadTimeout = 16000;

                var reader = PipeReader.Create(stream);
                var writer = PipeWriter.Create(stream);

                // 后台读取流数据
                _ = ProcessLinesAsync(stream);

                Console.WriteLine();

                // 写入数据
                for (int i = 0; i < 7; i++)
                {
                    await Task.Delay(2000);

                    var message = $"Hello Quic {i} \n";

                    Console.Write("Send -> " + message);

                    await writer.WriteAsync(Encoding.UTF8.GetBytes(message));
                }

                await writer.CompleteAsync();

                Console.ReadKey();
            });

            var connection = await listener.AcceptConnectionAsync();

            Console.WriteLine($"Client [{connection.RemoteEndPoint}]: connected");

            var stream = await connection.AcceptInboundStreamAsync();

            Console.WriteLine($"Stream [{stream.Id}]: created");

            await ProcessLinesAsync(stream);
        }

        // 处理流数据
        [SupportedOSPlatform("linux")]
        [SupportedOSPlatform("windows")]
        [RequiresPreviewFeatures]
        static async Task ProcessLinesAsync(QuicStream stream)
        {
            var reader = PipeReader.Create(stream);
            var writer = PipeWriter.Create(stream);

            while (true)
            {
                ReadResult result = await reader.ReadAsync();
                ReadOnlySequence<byte> buffer = result.Buffer;

                while (TryReadLine(ref buffer, out ReadOnlySequence<byte> line))
                {
                    // Process the line. 
                    ProcessLine(line);

                    // Ack 
                    //await writer.WriteAsync(System.Text.Encoding.UTF8.GetBytes($"ack: {DateTime.Now.ToString("HH:mm:ss")} \n"));
                }

                // Tell the PipeReader how much of the buffer has been consumed.
                reader.AdvanceTo(buffer.Start, buffer.End);

                // Stop reading if there's no more data coming.
                if (result.IsCompleted)
                {
                    break;
                }
            }

            Console.WriteLine($"Stream [{stream.Id}]: completed");

            await reader.CompleteAsync();
            await writer.CompleteAsync();
        }

        static bool TryReadLine(ref ReadOnlySequence<byte> buffer, out ReadOnlySequence<byte> line)
        {
            // Look for a EOL in the buffer.
            SequencePosition? position = buffer.PositionOf((byte)'\n');

            if (position == null)
            {
                line = default;
                return false;
            }

            // Skip the line + the \n.
            line = buffer.Slice(0, position.Value);
            buffer = buffer.Slice(buffer.GetPosition(1, position.Value));
            return true;
        }

        static void ProcessLine(in ReadOnlySequence<byte> buffer)
        {
            foreach (var segment in buffer)
            {
                Console.WriteLine("Recevied -> " + System.Text.Encoding.UTF8.GetString(segment.Span));
            }

            Console.WriteLine();
        }

        static X509Certificate2 GenerateManualCertificate()
        {
            X509Certificate2 cert = null;
            var store = new X509Store("KestrelWebTransportCertificates", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadWrite);
            if (store.Certificates.Count > 0)
            {
                cert = store.Certificates[^1];

                // rotate key after it expires
                if (DateTime.Parse(cert.GetExpirationDateString(), null) < DateTimeOffset.UtcNow)
                {
                    cert = null;
                }
            }
            if (cert == null)
            {
                // generate a new cert
                var now = DateTimeOffset.UtcNow;
                SubjectAlternativeNameBuilder sanBuilder = new();
                sanBuilder.AddDnsName("localhost");
                using var ec = ECDsa.Create(ECCurve.NamedCurves.nistP256);
                CertificateRequest req = new("CN=localhost", ec, HashAlgorithmName.SHA256);
                // Adds purpose
                req.CertificateExtensions.Add(new X509EnhancedKeyUsageExtension(new OidCollection
        {
            new("1.3.6.1.5.5.7.3.1") // serverAuth

        }, false));
                // Adds usage
                req.CertificateExtensions.Add(new X509KeyUsageExtension(X509KeyUsageFlags.DigitalSignature, false));
                // Adds subject alternate names
                req.CertificateExtensions.Add(sanBuilder.Build());
                // Sign
                using var crt = req.CreateSelfSigned(now, now.AddDays(14)); // 14 days is the max duration of a certificate for this
                cert = new(crt.Export(X509ContentType.Pfx));

                // Save
                store.Add(cert);
            }
            store.Close();

            var hash = SHA256.HashData(cert.RawData);
            var certStr = Convert.ToBase64String(hash);
            //Console.WriteLine($"\n\n\n\n\nCertificate: {certStr}\n\n\n\n"); // <-- you will need to put this output into the JS API call to allow the connection
            return cert;
        }
    }
}