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Zhi Kang Shao avatar image
Zhi Kang Shao asked

Trouble uploading a server build via Python

I'm trying to upload a server build to a URL retrieved via GetServerBuildUploadUrl(). The retrieved URL seems valid, but I'm having issues uploading to it. I've written the following Python script to attempt this:

http://pastebin.com/MXCfzUms

The retrieved URL, stored in the script as 'upload_url', is for example:

https://gamebuild-playfab-live.s3-us-west-2.amazonaws.com/####/Build001.zip?AWSAccessKeyId=ASIAJH2XGARXIQSQPZTA&Expires=1487168042&x-amz-security-token=FQoDYXdzEBYaDIbC0v9iDLrvtydDUSK3AwJX%2BdRfowazC13bYm%2F22ZZ8E3h6pdKMOGIx598ks%2FrY%2Bcgb8qFz5SLUBchpCjBaewir%2BVzigNkTXTJzPmdWfdk0ABLfEOaJW4MVSQw9TdkF8CuMX4k4iKFA2uwrHJfJGPaoIPUX64AkrnnctLDrr9%2BMMbz2gHP5Qr5MR2Rio12WgIrefraR3UztaLQWBaqVOgaFbTvzmuX7bhtKjwZ1J%2F%2FXXY5rB8hCHd2isDpy0e4QiE5Ftc95Q1XyvZZ1Mo9l0xn2ShySUzc8JJeN0X%2FtmYLAWk7dSjXLRH4X0m%2BDKsp5I%2FJay6YxHFtnZnuI174g%2BrjmHgd2hhEYUMXeervRx60dAeHYhzfP51KvPbEoCm5tNc3f18gC8Fx3MVIz3sifoSADFcVMQjd8bxAgQn0Gukf%2BT9%2BRbeoboJbneDgtxmQEdTxMXFQyacupeS6%2ByI3tmlGNDN4oBEWsSMb%2FR0NlibZBHVWIuXDzL2E5Y3s5P%2FbKhw2yITSYB46hsrZ1tP9HlxI1zLjEc6y9TGrdjt5GAbRtom%2FbwIts674PM3kkTKfM6z4baFH9Hud9MMOsVzJf2BiD2cV95GMo9JGRxQU%3D&Signature=pC%2FKKsQ3Jo1k2amzIAWUdFSdmgg%3D

with #### being the title ID of our game on PlayFab. I'm trying to upload a file directly to that URL, assuming that any authentication is already handled via the URL. Is that assumption correct?

I'm getting a 403 from Amazon with the error message 'The request signature we calculated does not match the signature you provided. Check your key and signing method.'

I should note that I'm not that familiar with HTTP requests nor Python, so I'm hoping anyone can point out something I'm blatantly doing wrong. :) We're using Jenkins, so if there is a more recommended way to automate the uploading of server builds from Jenkins I'd be happy to hear it too.

Custom Game Servers
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2 Answers

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Zhi Kang Shao avatar image
Zhi Kang Shao answered

Although that gave the same 403 error, it did put me in the right direction. I wasn't using the right syntax for specifying the upload type (in the body instead of the header). This next snippet worked:

headers = {
	'Content-Type': 'application/x-zip-compressed'
}
with open('TestFile.zip', 'rb') as data:
	r = put(upload_url, data=data, headers=headers)

Thanks for the help!

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brendan avatar image
brendan answered

We use pre-signed URLs for S3 uploads, for security. Unfortunately, the requests post method in your code is attempting to do a multi-part file upload against that, which isn't going to work. Could you try this?

with open('TestFile.zip', 'rb') as data:
    requests.put(upload_url, data=data)
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