Url encoding messed up


ASP.NET

Something is messing up / getting double encoded?

Breakdown of the URL, for a clearer view:

https://www.someSite.com/en/Download/DownloadLog?productId=6380 &downloadLink= http%3A%2F%2FsomeSite.com %2FDownload.ashx %3Frequest %3DIL7zxW6ETqiYU6cThSNKL8MpY %252bCRIVFZAVhd8DYPG85C1Uhdd %252f2hqqmoObeNmuS3dg4bDgGBb0kUUxGZhej89kTaLBHBXS %252bq3tlaEk2uMEcbWlUZzZQs00sirwZ2IvAvoSpU7HC3N1FaYSNciQ4iHNNmTU %252f6uMypNlPOJ6enlbZ1OrrYODkaMRdRfGKEba %252brusdryM4gp %252bopi1a0gNuMQVCtj %252bAvDcgXGOcZPNhPAnE %253d&version=Ma88r6Z6t2JQcnVhVXgp0A%3D%3D 

Replaced so far:

  • %3A%2F%2F would be ://
  • %2F would be /
  • %3F would be ?
  • %3D would be =
  • %252b would be <what?>
  • %252f would be <what?>
  • %253d would be <what?>

Altered version, as per progress so far:

https://www.someSite.com/en/Download/DownloadLog?productId=6380 &downloadLink= http://someSite.com /Download.ashx ?request =IL7zxW6ETqiYU6cThSNKL8MpY %252bCRIVFZAVhd8DYPG85C1Uhdd %252f2hqqmoObeNmuS3dg4bDgGBb0kUUxGZhej89kTaLBHBXS %252bq3tlaEk2uMEcbWlUZzZQs00sirwZ2IvAvoSpU7HC3N1FaYSNciQ4iHNNmTU %252f6uMypNlPOJ6enlbZ1OrrYODkaMRdRfGKEba %252brusdryM4gp %252bopi1a0gNuMQVCtj %252bAvDcgXGOcZPNhPAnE %253d&version=Ma88r6Z6t2JQcnVhVXgp0A== 

Can anyone help me figure out the remaining?