Make aws kms client use proxy

[duanasq]

Addresses the proxy aspect of this issue.

I'm not familiar with c++ so very open to suggestions!

Gosh there are a lot of proxy environment variable variations. I'm just getting it working for the following variations now:

HTTPS_PROXY=https://username:[email protected]:1234 HTTPS_PROXY=https://someproxy.host:1234 HTTPS_PROXY=http://username:[email protected]:1234 HTTPS_PROXY=http://someproxy.host:1234

TODO

• [ ] make sure it works also for HTTPS_PROXY=host:port

Thx

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[duanasq]

@googlebot I signed it!

[tholenst]

Sorry that this was never considered. We did not have the cycles to work on this, and even consider this. It might be necessary for someone to fork this. Note that this will be moved to https://github.com/tink-crypto/tink-cc-awskms