public MsQuicConnectionFactory(IOptions <MsQuicTransportOptions> options, IHostApplicationLifetime lifetime, ILoggerFactory loggerFactory)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
_api = new MsQuicApi();
var logger = loggerFactory.CreateLogger("Microsoft.AspNetCore.Server.Kestrel.Transport.MsQuic.Client");
var trace = new MsQuicTrace(logger);
_transportContext = new MsQuicTransportContext(lifetime, trace, options.Value);
}
static MsQuicApi()
{
IntPtr msQuicHandle;
if (!NativeLibrary.TryLoad($"{Interop.Libraries.MsQuic}.{MsQuicVersion.Major}", typeof(MsQuicApi).Assembly, DllImportSearchPath.AssemblyDirectory, out msQuicHandle) &&
!NativeLibrary.TryLoad(Interop.Libraries.MsQuic, typeof(MsQuicApi).Assembly, DllImportSearchPath.AssemblyDirectory, out msQuicHandle))
{
return;
}
try
{
if (!NativeLibrary.TryGetExport(msQuicHandle, "MsQuicOpenVersion", out IntPtr msQuicOpenVersionAddress))
{
return;
}
QUIC_API_TABLE *apiTable = null;
delegate * unmanaged[Cdecl] < uint, QUIC_API_TABLE **, int > msQuicOpenVersion = (delegate * unmanaged[Cdecl] < uint, QUIC_API_TABLE **, int >)msQuicOpenVersionAddress;
if (StatusFailed(msQuicOpenVersion((uint)MsQuicVersion.Major, &apiTable)))
{
return;
}
try
{
int arraySize = 4;
uint *libVersion = stackalloc uint[arraySize];
uint size = (uint)arraySize * sizeof(uint);
if (StatusFailed(apiTable->GetParam(null, QUIC_PARAM_GLOBAL_LIBRARY_VERSION, &size, libVersion)))
{
return;
}
var version = new Version((int)libVersion[0], (int)libVersion[1], (int)libVersion[2], (int)libVersion[3]);
if (version < MsQuicVersion)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(null, $"Incompatible MsQuic library version '{version}', expecting '{MsQuicVersion}'");
}
return;
}
// Assume SChannel is being used on windows and query for the actual provider from the library
QUIC_TLS_PROVIDER provider = OperatingSystem.IsWindows() ? QUIC_TLS_PROVIDER.SCHANNEL : QUIC_TLS_PROVIDER.OPENSSL;
size = sizeof(QUIC_TLS_PROVIDER);
apiTable->GetParam(null, QUIC_PARAM_GLOBAL_TLS_PROVIDER, &size, &provider);
UsesSChannelBackend = provider == QUIC_TLS_PROVIDER.SCHANNEL;
if (UsesSChannelBackend)
{
// Implies windows platform, check TLS1.3 availability
if (!IsWindowsVersionSupported())
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(null, $"Current Windows version ({Environment.OSVersion}) is not supported by QUIC. Minimal supported version is {MinWindowsVersion}");
}
return;
}
Tls13ServerMayBeDisabled = IsTls13Disabled(isServer: true);
Tls13ClientMayBeDisabled = IsTls13Disabled(isServer: false);
}
Api = new MsQuicApi(apiTable);
IsQuicSupported = true;
}
finally
{
if (!IsQuicSupported && NativeLibrary.TryGetExport(msQuicHandle, "MsQuicClose", out IntPtr msQuicClose))
{
// Gracefully close the API table
((delegate * unmanaged[Cdecl] < QUIC_API_TABLE *, void >)msQuicClose)(apiTable);
}
}
}
finally
{
if (!IsQuicSupported)
{
NativeLibrary.Free(msQuicHandle);
}
}
}
public MsQuicSecurityConfig(MsQuicApi registration, IntPtr nativeObjPtr)
{
_registration = registration;
NativeObjPtr = nativeObjPtr;
}
static MsQuicApi()
{
if (OperatingSystem.IsWindows())
{
if (!IsWindowsVersionSupported())
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(null, $"Current Windows version ({Environment.OSVersion}) is not supported by QUIC. Minimal supported version is {MinWindowsVersion}");
}
return;
}
Tls13ServerMayBeDisabled = IsTls13Disabled(true);
Tls13ClientMayBeDisabled = IsTls13Disabled(false);
}
IntPtr msQuicHandle;
if (NativeLibrary.TryLoad($"{Interop.Libraries.MsQuic}.{MsQuicVersion.Major}", typeof(MsQuicApi).Assembly, DllImportSearchPath.AssemblyDirectory, out msQuicHandle) ||
NativeLibrary.TryLoad(Interop.Libraries.MsQuic, typeof(MsQuicApi).Assembly, DllImportSearchPath.AssemblyDirectory, out msQuicHandle))
{
try
{
if (NativeLibrary.TryGetExport(msQuicHandle, "MsQuicOpenVersion", out IntPtr msQuicOpenVersionAddress))
{
QUIC_API_TABLE *apiTable;
delegate * unmanaged[Cdecl] < uint, QUIC_API_TABLE **, int > msQuicOpenVersion = (delegate * unmanaged[Cdecl] < uint, QUIC_API_TABLE **, int >)msQuicOpenVersionAddress;
if (StatusSucceeded(msQuicOpenVersion((uint)MsQuicVersion.Major, &apiTable)))
{
int arraySize = 4;
uint *libVersion = stackalloc uint[arraySize];
uint size = (uint)arraySize * sizeof(uint);
if (StatusSucceeded(apiTable->GetParam(null, QUIC_PARAM_GLOBAL_LIBRARY_VERSION, &size, libVersion)))
{
var version = new Version((int)libVersion[0], (int)libVersion[1], (int)libVersion[2], (int)libVersion[3]);
if (version >= MsQuicVersion)
{
Api = new MsQuicApi(apiTable);
IsQuicSupported = true;
}
else
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(null, $"Incompatible MsQuic library version '{version}', expecting '{MsQuicVersion}'");
}
}
}
}
}
}
finally
{
if (!IsQuicSupported)
{
NativeLibrary.Free(msQuicHandle);
}
}
}
}
