ISD-4905-repro.csx

#! "net8"
#r "nuget: SSH.NET, 2024.1.0"

using Renci.SshNet;
using System.Text;

var pk = "PK_IN_PEM_FORMAT";
var memPk = new MemoryStream(Encoding.ASCII.GetBytes(pk));
var auth = new PrivateKeyAuthenticationMethod("jerahmeel-test", new PrivateKeyFile(memPk));
var connectionInfo = new ConnectionInfo("sft.creditclear.com.au", "jerahmeel-test", [auth]);
var data = string.Join('\n', Enumerable.Range(0, 10000).Select(i => Random.Shared.NextInt64().ToString()).ToArray());


using var client = new SftpClient(connectionInfo);
client.Connect();

// create a file 
var handle = client.Create("test-dont-close.txt");
handle.Write(Encoding.UTF8.GetBytes(data).AsSpan());

// not closing before disconnecting causes the issue
// no error is raised in the client, but file is not uploaded to server
//handle.Close();

client.Disconnect();