Unable to upload a file SFTP using SSH.NET in C# - Permission Denied

Question

I am trying to upload a file using SFTP protocol using C# using SSH.NET library. Below is the code I am using

FileInfo f=new FileInfo("C:\\mdu\\abcd.xml");             string uploadfile=f.FullName;     Console.WriteLine(f.Name); Console.WriteLine("uploadfile"+uploadfile); var client = new SftpClient(host, port, username, password); client.Connect(); if(client.IsConnected){        Console.WriteLine("I AM CONNECTED"); } var fileStream = new FileStream(uploadfile, FileMode.Open);   if(fileStream!=null){             Console.WriteLine("YOU ARE NOT NULL"); } client.BufferSize = 4 * 1024;  client.UploadFile(fileStream, f.Name,null); client.Disconnect(); client.Dispose(); 

I am able to connect and the filestream is also not NULL. But I am getting PermissionDeniedException while attempting to upload a file.

Unhandled Exception: Renci.SshNet.Common.SftpPermissionDeniedException: Permission denied    at Renci.SshNet.Sftp.SftpSession.RequestOpen(String path, Flags flags, Boolean nullOnError)    at Renci.SshNet.SftpClient.InternalUploadFile(Stream input, String path, Flags flags, SftpUploadAsyncResult asyncResult, Action`1 uploadCallback)    at Renci.SshNet.SftpClient.UploadFile(Stream input, String path, Boolean canOverride, Action`1 uploadCallback)    at Renci.SshNet.SftpClient.UploadFile(Stream input, String path, Action`1 uploadCallback)    at movemsi.Program.UploadFile()    at movemsi.Program.Main(String[] args) 

Is there any settings I am missing from the above code. Any help is much appreciated.

Answer 1

You need to specify a full path to upload the file to.

For example:

client.UploadFile(fileStream, "/home/user/" + f.Name, null); 

Without the path, the SFTP server probably tries to write the file to a root folder or other folder that you do not have a write access to (hence the Permission denied).