Re-introduce ChangeWindow method on ShellStream (#1646)

* Re-introduce ChangeWindow method on ShellStream

* Fix pipeline build

* Fix pipeline build

* tweaks

Co-authored-by: Glen Kleidon <glenk@galkam.com.au>
Co-authored-by: oheiheiheiheihei <294797392@qq.com>

---------

Co-authored-by: Ivan Zaitsev <crackbargains@gmail.com>
Co-authored-by: Robert Hague <rh@johnstreetcapital.com>
Co-authored-by: Glen Kleidon <glenk@galkam.com.au>
Co-authored-by: oheiheiheiheihei <294797392@qq.com>

src/Renci.SshNet/Channels/ChannelSession.cs

@@ -239,26 +239,18 @@ namespace Renci.SshNet.Channels
         /// <param name="rows">The rows.</param>
         /// <param name="width">The width.</param>
         /// <param name="height">The height.</param>
-        /// <returns>
-        /// <see langword="true"/> if request was successful; otherwise <see langword="false"/>.
-        /// </returns>
-        public bool SendWindowChangeRequest(uint columns, uint rows, uint width, uint height)
+        public void SendWindowChangeRequest(uint columns, uint rows, uint width, uint height)
         {
             SendMessage(new ChannelRequestMessage(RemoteChannelNumber, new WindowChangeRequestInfo(columns, rows, width, height)));
-            return true;
         }
 
         /// <summary>
         /// Sends the local flow request.
         /// </summary>
         /// <param name="clientCanDo">if set to <see langword="true"/> [client can do].</param>
-        /// <returns>
-        /// <see langword="true"/> if request was successful; otherwise <see langword="false"/>.
-        /// </returns>
-        public bool SendLocalFlowRequest(bool clientCanDo)
+        public void SendLocalFlowRequest(bool clientCanDo)
         {
             SendMessage(new ChannelRequestMessage(RemoteChannelNumber, new XonXoffRequestInfo(clientCanDo)));
-            return true;
         }
 
         /// <summary>

src/Renci.SshNet/Channels/IChannelSession.cs

@@ -97,19 +97,13 @@ namespace Renci.SshNet.Channels
         /// <param name="rows">The rows.</param>
         /// <param name="width">The width.</param>
         /// <param name="height">The height.</param>
-        /// <returns>
-        /// <see langword="true"/> if request was successful; otherwise <see langword="false"/>.
-        /// </returns>
-        bool SendWindowChangeRequest(uint columns, uint rows, uint width, uint height);
+        void SendWindowChangeRequest(uint columns, uint rows, uint width, uint height);
 
         /// <summary>
         /// Sends the local flow request.
         /// </summary>
         /// <param name="clientCanDo">if set to <see langword="true"/> [client can do].</param>
-        /// <returns>
-        /// <see langword="true"/> if request was successful; otherwise <see langword="false"/>.
-        /// </returns>
-        bool SendLocalFlowRequest(bool clientCanDo);
+        void SendLocalFlowRequest(bool clientCanDo);
 
         /// <summary>
         /// Sends the signal request.

src/Renci.SshNet/IServiceFactory.cs

@@ -109,7 +109,7 @@ namespace Renci.SshNet
         /// <param name="session">The SSH session.</param>
         /// <param name="terminalName">The <c>TERM</c> environment variable.</param>
         /// <param name="columns">The terminal width in columns.</param>
-        /// <param name="rows">The terminal width in rows.</param>
+        /// <param name="rows">The terminal height in rows.</param>
         /// <param name="width">The terminal width in pixels.</param>
         /// <param name="height">The terminal height in pixels.</param>
         /// <param name="terminalModeValues">The terminal mode values.</param>

src/Renci.SshNet/ISshClient.cs

@@ -186,7 +186,7 @@ namespace Renci.SshNet
         /// </summary>
         /// <param name="terminalName">The <c>TERM</c> environment variable.</param>
         /// <param name="columns">The terminal width in columns.</param>
-        /// <param name="rows">The terminal width in rows.</param>
+        /// <param name="rows">The terminal height in rows.</param>
         /// <param name="width">The terminal width in pixels.</param>
         /// <param name="height">The terminal height in pixels.</param>
         /// <param name="bufferSize">The size of the buffer.</param>
@@ -200,7 +200,7 @@ namespace Renci.SshNet
         /// You can get a detailed list of these capabilities by using the ‘infocmp’ command.
         /// </para>
         /// <para>
-        /// The column/row dimensions override the pixel dimensions(when nonzero). Pixel dimensions refer
+        /// The column/row dimensions override the pixel dimensions (when nonzero). Pixel dimensions refer
         /// to the drawable area of the window.
         /// </para>
         /// </remarks>
@@ -211,7 +211,7 @@ namespace Renci.SshNet
         /// </summary>
         /// <param name="terminalName">The <c>TERM</c> environment variable.</param>
         /// <param name="columns">The terminal width in columns.</param>
-        /// <param name="rows">The terminal width in rows.</param>
+        /// <param name="rows">The terminal height in rows.</param>
         /// <param name="width">The terminal width in pixels.</param>
         /// <param name="height">The terminal height in pixels.</param>
         /// <param name="bufferSize">The size of the buffer.</param>
@@ -226,7 +226,7 @@ namespace Renci.SshNet
         /// You can get a detailed list of these capabilities by using the ‘infocmp’ command.
         /// </para>
         /// <para>
-        /// The column/row dimensions override the pixel dimensions(when non-zero). Pixel dimensions refer
+        /// The column/row dimensions override the pixel dimensions (when non-zero). Pixel dimensions refer
         /// to the drawable area of the window.
         /// </para>
         /// </remarks>

src/Renci.SshNet/ServiceFactory.cs

@@ -177,31 +177,7 @@ namespace Renci.SshNet
             return new SftpResponseFactory();
         }
 
-        /// <summary>
-        /// Creates a shell stream.
-        /// </summary>
-        /// <param name="session">The SSH session.</param>
-        /// <param name="terminalName">The <c>TERM</c> environment variable.</param>
-        /// <param name="columns">The terminal width in columns.</param>
-        /// <param name="rows">The terminal width in rows.</param>
-        /// <param name="width">The terminal width in pixels.</param>
-        /// <param name="height">The terminal height in pixels.</param>
-        /// <param name="terminalModeValues">The terminal mode values.</param>
-        /// <param name="bufferSize">The size of the buffer.</param>
-        /// <returns>
-        /// The created <see cref="ShellStream"/> instance.
-        /// </returns>
-        /// <exception cref="SshConnectionException">Client is not connected.</exception>
-        /// <remarks>
-        /// <para>
-        /// The <c>TERM</c> environment variable contains an identifier for the text window's capabilities.
-        /// You can get a detailed list of these capabilities by using the ‘infocmp’ command.
-        /// </para>
-        /// <para>
-        /// The column/row dimensions override the pixel dimensions(when non-zero). Pixel dimensions refer
-        /// to the drawable area of the window.
-        /// </para>
-        /// </remarks>
+        /// <inheritdoc/>
         public ShellStream CreateShellStream(ISession session, string terminalName, uint columns, uint rows, uint width, uint height, IDictionary<TerminalModes, uint> terminalModeValues, int bufferSize)
         {
             return new ShellStream(session, terminalName, columns, rows, width, height, terminalModeValues, bufferSize);

src/Renci.SshNet/ShellStream.cs

@@ -281,6 +281,25 @@ namespace Renci.SshNet
             throw new NotSupportedException();
         }
 
+        /// <summary>
+        /// Sends new dimensions of the window (terminal) to the server.
+        /// </summary>
+        /// <param name="columns">The terminal width in columns.</param>
+        /// <param name="rows">The terminal height in rows.</param>
+        /// <param name="width">The terminal width in pixels.</param>
+        /// <param name="height">The terminal height in pixels.</param>
+        /// <remarks>
+        /// The column/row dimensions override the pixel dimensions (when nonzero). Pixel dimensions refer
+        /// to the drawable area of the window.
+        /// </remarks>
+        /// <exception cref="ObjectDisposedException">The stream is closed.</exception>
+        public void ChangeWindowSize(uint columns, uint rows, uint width, uint height)
+        {
+            ThrowHelper.ThrowObjectDisposedIf(_disposed, this);
+
+            _channel.SendWindowChangeRequest(columns, rows, width, height);
+        }
+
         /// <summary>
         /// Expects the specified expression and performs action when one is found.
         /// </summary>

test/Renci.SshNet.Tests/Classes/ShellStreamTest.cs

@@ -123,6 +123,30 @@ namespace Renci.SshNet.Tests.Classes
             Assert.ThrowsException<ObjectDisposedException>(() => shellStream.Write(bytes, 0, bytes.Length));
         }
 
+        [TestMethod]
+        public void ChangeWindowSize_AfterDispose_ThrowsObjectDisposedException()
+        {
+            var shellStream = CreateShellStream();
+
+            _channelSessionMock.Setup(p => p.Dispose());
+
+            shellStream.Dispose();
+
+            Assert.ThrowsException<ObjectDisposedException>(() => shellStream.ChangeWindowSize(80, 25, 0, 0));
+        }
+
+        [TestMethod]
+        public void ChangeWindowSize_SendsWindowChangeRequest()
+        {
+            var shellStream = CreateShellStream();
+
+            _channelSessionMock.Setup(s => s.SendWindowChangeRequest(80, 25, 0, 1));
+
+            shellStream.ChangeWindowSize(80, 25, 0, 1);
+
+            _channelSessionMock.Verify(v => v.SendWindowChangeRequest(80, 25, 0, 1), Times.Once());
+        }
+
         private ShellStream CreateShellStream()
         {
             _sessionMock.Setup(p => p.ConnectionInfo).Returns(_connectionInfoMock.Object);

test/Renci.SshNet.Tests/Classes/ShellStreamTest_ReadExpect.cs

@@ -426,13 +426,13 @@ namespace Renci.SshNet.Tests.Classes
 
             public bool SendKeepAliveRequest() => throw new NotImplementedException();
 
-            public bool SendLocalFlowRequest(bool clientCanDo) => throw new NotImplementedException();
+            public void SendLocalFlowRequest(bool clientCanDo) => throw new NotImplementedException();
 
             public bool SendSignalRequest(string signalName) => throw new NotImplementedException();
 
             public bool SendSubsystemRequest(string subsystem) => throw new NotImplementedException();
 
-            public bool SendWindowChangeRequest(uint columns, uint rows, uint width, uint height) => throw new NotImplementedException();
+            public void SendWindowChangeRequest(uint columns, uint rows, uint width, uint height) => throw new NotImplementedException();
 
             public bool SendX11ForwardingRequest(bool isSingleConnection, string protocol, byte[] cookie, uint screenNumber) => throw new NotImplementedException();
 #pragma warning restore IDE0022 // Use block body for method