Question

I got the the following error message when uploading. The Powershell create a zip file using 7za.exe and call my FTP function to upload the file. What may cause the problem? Will Windows http://ftp.exe client be more stable?

Exception calling “GetRequestStream” with “0” argument(s): “The remote
server returned an error: (550) File unavailable (e.g., file not
found, no access).”

Update:
It seems the same files always failed in the loop. However, It works if I just run ftpFile file_name_with_full_path. (The file_name_with_full_path is copied from the output of the loop script.

Update 2:
I tried to use webclient ($webclient.UploadFile($uri, $File)) to ftp the files. Same error.

Update 3:
Found this Question. May need to add $ftp.KeepAlive = false. Why?

function ftpFile
{
    Param (
        [Parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [ValidateScript({Test-Path $_})]
        [String] 
        $filePath
        ,
        [Parameter(Mandatory=$false)]
        [String]
        $ftpUrl = "ftp://10.0.1.1/Data/"
        ,
        [Parameter(Mandatory=$false)]
        [String]
        $Login = "username"
        ,    
        [Parameter(Mandatory=$false)]
        [String]
        $password = "password"
    )
    Process {
        try {
            $ftp = [System.Net.FtpWebRequest]::Create("$ftpUrl/$(Split-Path $filePath -Leaf)")
            $ftp = [System.Net.FtpWebRequest]$ftp
            $ftp.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile
            $ftp.Credentials = new-object System.Net.NetworkCredential("$Login","$password")
            $ftp.UseBinary = $true
            $ftp.UsePassive = $true

            # read in the file to upload as a byte array
            $content = gc -en byte $filePath
            $ftp.ContentLength = $content.Length

            # get the request stream, and write the bytes into it
            $rs = $ftp.GetRequestStream()
            $rs.Write($content, 0, $content.Length)
            $rs.Close()
            $rs.Dispose()

            echo "ftpFile: $filePath size: $($content.Length)"
        }
        catch {
            throw "FTP: $_"
        }
    }
}

Answer 1

Found this Question. Need to add $ftp.KeepAlive = false.