Add missing documentation to System.Net.Quic and System.Net.WebSockets (#74945)

* Fix the inheritdoc cref on Quic* classes

* Add missing documentation

* WIP

* Add summary and exception annotation to Stream overriden members

* Code review feedback

src/libraries/System.Net.Http/src/System/Net/Http/Headers/HttpRequestHeaders.cs

@@ -160,6 +160,8 @@ private T GetSpecializedCollection<T>(int slot, Func<HttpRequestHeaders, T> crea
             set { SetOrRemoveParsedValue(KnownHeaders.MaxForwards.Descriptor, value); }
         }
 
+        /// <summary>Gets or sets the value of the <see langword=":protocol" /> pseudo-header for an HTTP request.</summary>
+        /// <value>The value of the <see langword=":protocol" /> pseudo-header for an HTTP request.</value>
         public string? Protocol
         {
             get => _protocol;

src/libraries/System.Net.Http/src/System/Net/Http/HttpMethod.cs

@@ -64,6 +64,8 @@ public static HttpMethod Patch
             get { return s_patchMethod; }
         }
 
+        /// <summary>Gets the HTTP CONNECT protocol method.</summary>
+        /// <value>The HTTP CONNECT method.</value>
         public static HttpMethod Connect
         {
             get { return s_connectMethod; }

src/libraries/System.Net.Quic/src/System/Net/Quic/QuicConnection.cs

@@ -167,7 +167,7 @@ public static async ValueTask<QuicConnection> ConnectAsync(QuicClientConnectionO
     /// </summary>
     public SslApplicationProtocol NegotiatedApplicationProtocol => _negotiatedApplicationProtocol;
 
-    /// <inheritdoc cref="ToString"/>
+    /// <inheritdoc />
     public override string ToString() => _handle.ToString();
 
     /// <summary>

src/libraries/System.Net.Quic/src/System/Net/Quic/QuicListener.cs

@@ -93,7 +93,7 @@ public static ValueTask<QuicListener> ListenAsync(QuicListenerOptions options, C
     /// </summary>
     public IPEndPoint LocalEndPoint { get; }
 
-    /// <inheritdoc cref="ToString"/>
+    /// <inheritdoc />
     public override string ToString() => _handle.ToString();
 
     /// <summary>
@@ -157,6 +157,7 @@ private unsafe QuicListener(QuicListenerOptions options)
     /// Propagates exceptions from <see cref="QuicListenerOptions.ConnectionOptionsCallback"/>, including validation errors from misconfigured <see cref="QuicServerConnectionOptions"/>, e.g. <see cref="ArgumentException"/>.
     /// Also propagates exceptions from failed connection handshake, e.g. <see cref="AuthenticationException"/>, <see cref="QuicException"/>.
     /// </remarks>
+    /// <param name="cancellationToken">A cancellation token that can be used to cancel the asynchronous operation.</param>
     /// <returns>A task that will contain a fully connected <see cref="QuicConnection" /> which successfully finished the handshake and is ready to be used.</returns>
     public async ValueTask<QuicConnection> AcceptConnectionAsync(CancellationToken cancellationToken = default)
     {

src/libraries/System.Net.Quic/src/System/Net/Quic/QuicStream.Stream.cs

@@ -13,16 +13,39 @@ namespace System.Net.Quic;
 public partial class QuicStream : Stream
 {
     // Seek and length.
+    /// <inheritdoc />
+    /// <summary>Gets a value indicating whether the <see cref="QuicStream" /> supports seeking.</summary>
     public override bool CanSeek => false;
+
+    /// <inheritdoc />
+    /// <summary>Gets the length of the data available on the stream. This property is not currently supported and always throws a <see cref="NotSupportedException" />.</summary>
+    /// <exception cref="NotSupportedException">In all cases.</exception>
     public override long Length => throw new NotSupportedException();
+
+    /// <inheritdoc />
+    /// <summary>Gets or sets the position within the current stream. This property is not currently supported and always throws a <see cref="NotSupportedException" />.</summary>
+    /// <exception cref="NotSupportedException">In all cases.</exception>
     public override long Position { get => throw new NotSupportedException(); set => throw new NotSupportedException(); }
+
+    /// <inheritdoc />
+    /// <summary>Sets the current position of the stream to the given value. This method is not currently supported and always throws a <see cref="NotSupportedException" />.</summary>
+    /// <exception cref="NotSupportedException">In all cases.</exception>
     public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException();
+
+    /// <inheritdoc />
+    /// <summary>Sets the length of the stream. This method is not currently supported and always throws a <see cref="NotSupportedException" />.</summary>
+    /// <exception cref="NotSupportedException">In all cases.</exception>
     public override void SetLength(long value) => throw new NotSupportedException();
 
     // Read and Write timeouts.
+    /// <inheritdoc />
+    /// <summary>Gets a value that indicates whether the <see cref="QuicStream" /> can timeout.</summary>
     public override bool CanTimeout => true;
+
     private TimeSpan _readTimeout = Timeout.InfiniteTimeSpan;
     private TimeSpan _writeTimeout = Timeout.InfiniteTimeSpan;
+
+    /// <inheritdoc />
     public override int ReadTimeout
     {
         get
@@ -40,6 +63,8 @@ public override int ReadTimeout
             _readTimeout = TimeSpan.FromMilliseconds(value);
         }
     }
+
+    /// <inheritdoc />
     public override int WriteTimeout
     {
         get
@@ -59,21 +84,33 @@ public override int WriteTimeout
     }
 
     // Read boilerplate.
+    /// <inheritdoc />
+    /// <summary>Gets a value indicating whether the <see cref="QuicStream" /> supports reading.</summary>
     public override bool CanRead => Volatile.Read(ref _disposed) == 0 && _canRead;
+
+    /// <inheritdoc />
     public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback? callback, object? state)
         => TaskToApm.Begin(ReadAsync(buffer, offset, count, default), callback, state);
+
+    /// <inheritdoc />
     public override int EndRead(IAsyncResult asyncResult)
         => TaskToApm.End<int>(asyncResult);
+
+    /// <inheritdoc />
     public override int Read(byte[] buffer, int offset, int count)
     {
         ValidateBufferArguments(buffer, offset, count);
         return Read(buffer.AsSpan(offset, count));
     }
+
+    /// <inheritdoc />
     public override int ReadByte()
     {
         byte b = 0;
         return Read(MemoryMarshal.CreateSpan(ref b, 1)) != 0 ? b : -1;
     }
+
+    /// <inheritdoc />
     public override int Read(Span<byte> buffer)
     {
         ObjectDisposedException.ThrowIf(_disposed == 1, this);
@@ -101,6 +138,8 @@ public override int Read(Span<byte> buffer)
             cts?.Dispose();
         }
     }
+
+    /// <inheritdoc />
     public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken = default)
     {
         ValidateBufferArguments(buffer, offset, count);
@@ -108,20 +147,32 @@ public override Task<int> ReadAsync(byte[] buffer, int offset, int count, Cancel
     }
 
     // Write boilerplate.
+    /// <inheritdoc />
+    /// <summary>Gets a value indicating whether the <see cref="QuicStream" /> supports writing.</summary>
     public override bool CanWrite => Volatile.Read(ref _disposed) == 0 && _canWrite;
+
+    /// <inheritdoc />
     public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback? callback, object? state)
         => TaskToApm.Begin(WriteAsync(buffer, offset, count, default), callback, state);
+
+    /// <inheritdoc />
     public override void EndWrite(IAsyncResult asyncResult)
         => TaskToApm.End(asyncResult);
+
+    /// <inheritdoc />
     public override void Write(byte[] buffer, int offset, int count)
     {
         ValidateBufferArguments(buffer, offset, count);
         Write(buffer.AsSpan(offset, count));
     }
+
+    /// <inheritdoc />
     public override void WriteByte(byte value)
     {
         Write(MemoryMarshal.CreateReadOnlySpan(ref value, 1));
     }
+
+    /// <inheritdoc />
     public override void Write(ReadOnlySpan<byte> buffer)
     {
         ObjectDisposedException.ThrowIf(_disposed == 1, this);
@@ -145,6 +196,8 @@ public override void Write(ReadOnlySpan<byte> buffer)
             cts?.Dispose();
         }
     }
+
+    /// <inheritdoc />
     public override Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken = default)
     {
         ValidateBufferArguments(buffer, offset, count);
@@ -152,13 +205,18 @@ public override Task WriteAsync(byte[] buffer, int offset, int count, Cancellati
     }
 
     // Flush.
+
+    /// <inheritdoc />
     public override void Flush()
         => FlushAsync().GetAwaiter().GetResult();
+
+    /// <inheritdoc />
     public override Task FlushAsync(CancellationToken cancellationToken = default)
         // NOP for now
         => Task.CompletedTask;
 
     // Dispose.
+    /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
         DisposeAsync().AsTask().GetAwaiter().GetResult();

src/libraries/System.Net.Quic/src/System/Net/Quic/QuicStream.cs

@@ -126,7 +126,7 @@ public sealed partial class QuicStream
     /// </summary>
     public Task WritesClosed => _sendTcs.GetFinalTask();
 
-    /// <inheritdoc cref="ToString"/>
+    /// <inheritdoc />
     public override string ToString() => _handle.ToString();
 
     /// <summary>
@@ -233,7 +233,7 @@ internal ValueTask StartAsync(CancellationToken cancellationToken = default)
         return valueTask;
     }
 
-    /// <inheritdoc cref="ReadAsync(System.Memory{byte},System.Threading.CancellationToken)"/>
+    /// <inheritdoc />
     public override async ValueTask<int> ReadAsync(Memory<byte> buffer, CancellationToken cancellationToken = default)
     {
         ObjectDisposedException.ThrowIf(_disposed == 1, this);
@@ -307,12 +307,12 @@ public override async ValueTask<int> ReadAsync(Memory<byte> buffer, Cancellation
         return totalCopied;
     }
 
-    /// <inheritdoc cref="WriteAsync(System.ReadOnlyMemory{byte},System.Threading.CancellationToken)"/>
+    /// <inheritdoc />
     public override ValueTask WriteAsync(ReadOnlyMemory<byte> buffer, CancellationToken cancellationToken = default)
         => WriteAsync(buffer, completeWrites: false, cancellationToken);
 
 
-    /// <inheritdoc cref="WriteAsync(System.ReadOnlyMemory{byte},System.Threading.CancellationToken)"/>
+    /// <inheritdoc cref="WriteAsync(ReadOnlyMemory{byte}, CancellationToken)"/>
     /// <param name="buffer">The region of memory to write data from.</param>
     /// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param>
     /// <param name="completeWrites">Notifies the peer about gracefully closing the write side, i.e.: sends FIN flag with the data.</param>
@@ -484,8 +484,8 @@ private unsafe int HandleEventStartComplete(ref START_COMPLETE data)
     private unsafe int HandleEventReceive(ref RECEIVE data)
     {
         ulong totalCopied = (ulong)_receiveBuffers.CopyFrom(
-            new ReadOnlySpan<QUIC_BUFFER>(data.Buffers, (int) data.BufferCount),
-            (int) data.TotalBufferLength,
+            new ReadOnlySpan<QUIC_BUFFER>(data.Buffers, (int)data.BufferCount),
+            (int)data.TotalBufferLength,
             data.Flags.HasFlag(QUIC_RECEIVE_FLAGS.FIN));
 
         if (NetEventSource.Log.IsEnabled())

src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/ClientWebSocket.cs

@@ -73,11 +73,24 @@ public override WebSocketState State
             }
         }
 
+        /// <summary>
+        /// Connects to a WebSocket server as an asynchronous operation.
+        /// </summary>
+        /// <param name="uri">The URI of the WebSocket server to connect to.</param>
+        /// <param name="cancellationToken">A cancellation token used to propagate notification that the operation should be canceled.</param>
+        /// <returns>The task object representing the asynchronous operation.</returns>
         public Task ConnectAsync(Uri uri, CancellationToken cancellationToken)
         {
             return ConnectAsync(uri, null, cancellationToken);
         }
 
+        /// <summary>
+        /// Connects to a WebSocket server as an asynchronous operation.
+        /// </summary>
+        /// <param name="uri">The URI of the WebSocket server to connect to.</param>
+        /// <param name="invoker">The <see cref="HttpMessageInvoker" /> instance to use for connecting.</param>
+        /// <param name="cancellationToken">A cancellation token used to propagate notification that the operation should be canceled.</param>
+        /// <returns>The task object representing the asynchronous operation.</returns>
         public Task ConnectAsync(Uri uri, HttpMessageInvoker? invoker, CancellationToken cancellationToken)
         {
             ArgumentNullException.ThrowIfNull(uri);

src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/ClientWebSocketOptions.cs

@@ -42,6 +42,8 @@ public sealed class ClientWebSocketOptions
 
         #region HTTP Settings
 
+        /// <summary>Gets or sets the HTTP version to use.</summary>
+        /// <value>The HTTP message version. The default value is <c>1.1</c>.</value>
         public Version HttpVersion
         {
             get => _version;
@@ -54,6 +56,8 @@ public Version HttpVersion
             }
         }
 
+        /// <summary>Gets or sets the policy that determines how <see cref="ClientWebSocketOptions.HttpVersion" /> is interpreted and how the final HTTP version is negotiated with the server.</summary>
+        /// <value>The version policy used when the HTTP connection is established.</value>
         public HttpVersionPolicy HttpVersionPolicy
         {
             get => _versionPolicy;