Use BITS Module to download a file and allow speed control

value="2000"  # Give the value of control speed. NOTE: It's in kbps.

path="C:\ProgramData" # Give the path where want to save the downloaded file.

​

def Registry_change():

    script=r"""

               Const HKEY_LOCAL_MACHINE = &H80000002

    strComputer = "."

    Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & _

    strComputer & "\root\default:StdRegProv")

​

    strKeyPath = "SOFTWARE\Policies\Microsoft\Windows\BITS"

    oReg.CreateKey HKEY_LOCAL_MACHINE,strKeyPath

    strValueName1 = "EnableBITSMaxBandwidth"

    strValueName2 = "MaxBandwidthValidFrom"

    strValueName3 = "MaxBandwidthValidTo"

    strValueName4 = "MaxTransferRateOffSchedule"

    strValueName5 = "MaxTransferRateOnSchedule"

    strValueName6 = "UseSystemMaximum"

    'Enabled

    dwValue1 = 1

    dwValue2 = 8

    dwValue3 = 17

    dwValue4 = %s

    dwValue5 = 10

    dwValue6 = 1

    oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName1,dwValue1

    oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName2,dwValue2

    oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName3,dwValue3

    oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName4,dwValue4

    oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName5,dwValue5

    oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName6,dwValue6

        }"""%(value)

​

    import ctypes

    class disable_file_system_redirection:

        _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection

        _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection

        def __enter__(self):

            self.old_value = ctypes.c_long()

            self.success = self._disable(ctypes.byref(self.old_value))

        def __exit__(self, type, value, traceback):

            if self.success:

                self._revert(self.old_value)

    with disable_file_system_redirection():

            import os

            path =os.environ['TEMP']

            file = path+'\\'+'Registry_change.vbs'

            fobj= open(file, "w");

            fwrite=fobj.write(script);

            fobj.close();

            run=os.popen('cscript.exe '+file).read();

            print 'Enabled BITS background transfering Process , Speed is Limited with Specified Value.\n'

            print 'Download Started to the Specified path\n'

            try:

                os.remove(file)

            except OSError:

                pass

    return

​

Registry_change()

percentage="%"

ps_content=r'''

Import-Module BitsTransfer

$file ="http://ftp.belnet.be/mirror/videolan/vlc/2.2.6/win32/vlc-2.2.6-win32.exe"

$path="%s"

$bitsjob = Start-BitsTransfer -Source $file -Destination $path -Asynchronous

while( ($bitsjob.JobState.ToString() -eq 'Transferring') -or ($bitsjob.JobState.ToString() -eq 'Connecting') )

{

$Proc = ($bitsjob.BytesTransferred / $bitsjob.BytesTotal) * 100

}

Get-BitsTransfer

Get-BitsTransfer | Complete-BitsTransfer

​

Write-Host "Download Completed `n";

​

Write-Host "Job Details : `n";

'''%(path)

​

file_name='bits.ps1' # define your own file name

​

import os

​

def ecmd(command):

    import ctypes

    from subprocess import PIPE, Popen

    class disable_file_system_redirection:

        _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection

        _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection

        def __enter__(self):

            self.old_value = ctypes.c_long()

            self.success = self._disable(ctypes.byref(self.old_value))

        def __exit__(self, type, value, traceback):

            if self.success:

                self._revert(self.old_value)

    with disable_file_system_redirection():

        obj = Popen(command, shell = True, stdout = PIPE, stderr = PIPE)

        out, err = obj.communicate()

        ret=obj.returncode

        if ret==0:

            if out:

                return out.strip()

            else:

                return ret

        else:

            if err:

                return err.strip()

            else:

                return ret

​

file_path=os.path.join(os.environ['TEMP'], file_name)

with open(file_path, 'wb') as wr:

    wr.write(ps_content)

​

ecmd('powershell "Set-ExecutionPolicy RemoteSigned"')

print ecmd('powershell "%s"'%file_path)

​

​