Update the OpenNettyConnection static APIs to make the cancellation t…

…oken mandatory

README.md

@@ -151,8 +151,11 @@ await Task.Delay(-1);
 >     parity  : Parity.None,
 >     dataBits: 8,
 >     stopBits: StopBits.One);
+>
+> using var source = new CancellationTokenSource();
+> source.CancelAfter(TimeSpan.FromSeconds(10));
 > 
-> await using var connection = await OpenNettyConnection.CreateSerialConnectionAsync(port);
+> await using var connection = await OpenNettyConnection.CreateSerialConnectionAsync(port, source.Token);
 > 
 > var message = OpenNettyMessage.CreateCommand(
 >     protocol: OpenNettyProtocol.Zigbee,
@@ -161,9 +164,9 @@ await Task.Delay(-1);
 >     media   : OpenNettyMedia.Radio,
 >     mode    : OpenNettyMode.Unicast);
 > 
-> await connection.SendAsync(message.Frame, CancellationToken.None);
+> await connection.SendAsync(message.Frame, source.Token);
 > 
-> if (await connection.ReceiveAsync(CancellationToken.None) != OpenNettyFrames.Acknowledgement)
+> if (await connection.ReceiveAsync(source.Token) != OpenNettyFrames.Acknowledgement)
 > {
 >     throw new ApplicationException("The frame was not acknowledged by the gateway.");
 > }

src/OpenNetty/OpenNettyConnection.cs

@@ -62,7 +62,7 @@ public abstract class OpenNettyConnection : IAsyncDisposable
     /// A <see cref="ValueTask"/> that can be used to monitor the asynchronous
     /// operation and whose result returns the created connection.
     /// </returns>
-    public static ValueTask<OpenNettyConnection> CreateAsync(OpenNettyGateway gateway, CancellationToken cancellationToken = default)
+    public static ValueTask<OpenNettyConnection> CreateAsync(OpenNettyGateway gateway, CancellationToken cancellationToken)
     {
         ArgumentNullException.ThrowIfNull(gateway);
 
@@ -87,7 +87,7 @@ public static ValueTask<OpenNettyConnection> CreateAsync(OpenNettyGateway gatewa
     /// A <see cref="ValueTask"/> that can be used to monitor the asynchronous
     /// operation and whose result returns the created serial connection.
     /// </returns>
-    public static async ValueTask<OpenNettyConnection> CreateSerialConnectionAsync(SerialPort port, CancellationToken cancellationToken = default)
+    public static async ValueTask<OpenNettyConnection> CreateSerialConnectionAsync(SerialPort port, CancellationToken cancellationToken)
     {
         ArgumentNullException.ThrowIfNull(port);
 
@@ -110,7 +110,7 @@ public static async ValueTask<OpenNettyConnection> CreateSerialConnectionAsync(S
     /// A <see cref="ValueTask"/> that can be used to monitor the asynchronous
     /// operation and whose result returns the created TCP connection.
     /// </returns>
-    public static async ValueTask<OpenNettyConnection> CreateTcpConnectionAsync(IPEndPoint endpoint, CancellationToken cancellationToken = default)
+    public static async ValueTask<OpenNettyConnection> CreateTcpConnectionAsync(IPEndPoint endpoint, CancellationToken cancellationToken)
     {
         ArgumentNullException.ThrowIfNull(endpoint);