dvdrbn-m9 opened a new issue #1562:
URL: https://github.com/apache/libcloud/issues/1562
## Summary
Using `upload_object` to upload an empty file returns response:
`400 - Bad Request: too many Host headers`
## Detailed Information
Python 3.6.8
Libcloud: 3.3.1
OS: rhel 7.9
I use libcloud to upload objects to 3 providers - aws s3, minio & netapp
storageGrid, I use the s3 driver for all of them. `upload_object` function
works fine except when I try to upload an empty file (I sometimes need to store
just meta-data with a specific object name for later use). When trying to
upload an empty file I get the response:
```
status: 400
reason: 'Bad Request: too many Host headers'
```
If I add anything to the file's content it uploads successfully with the
meta-data, so its not a problem with permissions/path in s3 or something like
that. I also tried without the meta-data, but that didn't work either.
I tried using `upload_object_via_stream` and found the following code works:
```
with io.BytesIO() as iterator:
driver.upload_object_via_stream(iterator=iterator,
container=container,
object_name=objName,
extra=extra)
```
This code uploads a 0 bytes file successfully to aws s3 & minio, but not to
netapp's storageGrid (so unfortunately I can't use it).
I think it's a limitation of storageGrid's multi-part upload and not some
other storage restriction (we have existing empty objects on storageGrid, but
those were uploaded using jclouds).
I think using `upload_object` will be the best solution for all 3 providers,
but I don't understand why it's not uploading empty files and would appreciate
help with this. Thanks!
### Reproduce
1. `touch ~/test-empty.txt`
2. Use `upload_object` to upload test-empty.txt
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