AWS.Client mangles query parameters.

[Rombobeorn]

AWS.Client mangles query parameters in some cases by percent-encoding the wrong character.

Here's an example that's easy to reproduce: Apache HTTPD can output file lists on request. A URL like "https://example.net/dir/?C=S;O=D" asks the server to sort the files by size in descending order. AWS.Client.Get sends that URL as "/dir/?C=S;O%3DD". The second equals sign gets encoded to not have any particular meaning. Thus Apache doesn't recognize the parameter "O=D", and sorts in ascending order instead.

A server that generates its own URLs is free to use any syntax it wants in the query part. A client-side library that receives ready-made URLs shall pass them through unmangled.