Add comment to clarify that StreamReader uses a buffer size of 1024 bytes.

Author: drieseng

src/Renci.SshNet/SftpClient.cs

@@ -1,5 +1,4 @@
 using System;
-
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
@@ -1425,6 +1424,9 @@ public string[] ReadAllLines(string path)
         /// <exception cref="ObjectDisposedException">The method was called after the client was disposed.</exception>
         public string[] ReadAllLines(string path, Encoding encoding)
         {
+            // we use the default buffer size for StreamReader - which is 1024 bytes - and the configured buffer size
+            // for the SftpFileStream; may want to revisit this later
+
             var lines = new List<string>();
             using (var stream = new StreamReader(OpenRead(path), encoding))
             {
@@ -1464,6 +1466,9 @@ public string ReadAllText(string path)
         /// <exception cref="ObjectDisposedException">The method was called after the client was disposed.</exception>
         public string ReadAllText(string path, Encoding encoding)
         {
+            // we use the default buffer size for StreamReader - which is 1024 bytes - and the configured buffer size
+            // for the SftpFileStream; may want to revisit this later
+
             using (var stream = new StreamReader(OpenRead(path), encoding))
             {
                 return stream.ReadToEnd();