Go

SFTP Get Size of File on Server

See more SFTP Examples

Demonstrates how to get the size of an existing file on the server. Go

    success := false

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    sftp := chilkat.NewSFtp()

    // Set some timeouts, in milliseconds:
    sftp.SetConnectTimeoutMs(5000)
    sftp.SetIdleTimeoutMs(10000)

    // Connect to the SSH server.  
    // The standard SSH port = 22
    // The hostname may be a hostname or IP address.
    hostname := "sftp.example.com"
    port := 22
    success = sftp.Connect(hostname,port)
    if success != true {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.  This example uses password authenication.
    success = sftp.AuthenticatePw("myLogin","myPassword")
    if success != true {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    // After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp()
    if success != true {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    // Assuming we know the file size won't be too large, we get the size as a 32-bit integer.
    // For SFTP, the remote file path is always either a path relative to the HOME directory of the user account, or an absolute path on the server.
    bFollowLinks := true
    bIsHandle := false
    fileSize := sftp.GetFileSize32("someDir/someFile.dat",bFollowLinks,bIsHandle)
    if fileSize < 0 {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    fmt.Println("file size = ", fileSize)

    // If the file size might be too large for a 32-bit signed integer, then get the size as a decimal string.
    // You can convert the string to a 64-bit integer in your programming language.
    fileSizeStr := sftp.GetFileSizeStr("someDir/someFile.dat",bFollowLinks,bIsHandle)
    if sftp.LastMethodSuccess() == false {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    fmt.Println("file size = ", *fileSizeStr)

    // You can alternatively get the size with an open file handle.
    handle := sftp.OpenFile("someDir/someFile.dat","readOnly","openExisting")
    if sftp.LastMethodSuccess() != true {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    // Get the size using the handle.
    bIsHandle = true
    fileSize = sftp.GetFileSize32("someDir/someFile.dat",bFollowLinks,bIsHandle)
    if fileSize < 0 {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }

    fmt.Println("file size = ", fileSize)

    // -----------------------------------------------------------------------------
    // Don't forget to close the file handle.
    // Otherwise open handles will accumulate on the server until eventually a limit
    // is reached and the server will fail on a call to OpenFile.
    // -----------------------------------------------------------------------------

    // Close the file.
    success = sftp.CloseHandle(*handle)
    if success != true {
        fmt.Println(sftp.LastErrorText())
        sftp.DisposeSFtp()
        return
    }


    sftp.DisposeSFtp()