When forwarding a request, a SingleHostReverseProxy appends the request's path to the target URL's path. However, if certain path elements are encoded, (such as %2F for slash in either the request or target path), simply joining the URL.Path elements is not sufficient, since the field holds the *decoded* path. Since 87a605, the RawPath field was added which holds a decoding hint for the URL. When joining URL paths, this decoding hint needs to be taken into consideration. As an example, if the target URL.Path is /a/b, and URL.RawPath is /a%2Fb, joining the path with /c should result in /a/b/c URL.Path, and /a%2Fb/c in RawPath. The added joinURLPath function combines the two URL's Paths, while taking into account escaping, and replaces the previously used singleJoiningSlash in NewSingleHostReverseProxy. Fixes #35908 |
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README.md
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
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