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net/http/httputil: the default Director created by NewSingleHostReverseProxy can't pass through %2F when target path is non-root #28359

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SamLex opened this Issue Oct 24, 2018 · 1 comment

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SamLex commented Oct 24, 2018

Same as #9589, but narrowed to when the target has a non-root path.

What did you do?

https://play.golang.org/p/aVfpA4qDvBD
Updated to use httptest.NewRequest: https://play.golang.org/p/IaxyHIn-iDd

What did you expect to see?

GET /subpath/SOME%2FPATH HTTP/1.1
Host: example.com
Accept-Encoding: gzip

What did you see instead?

GET /subpath/SOME/PATH HTTP/1.1
Host: example.com
Accept-Encoding: gzip

System details

go version go1.11.1 linux/amd64
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/euan/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/euan/Go"
GOPROXY=""
GORACE=""
GOROOT="/usr/lib/go"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
GOROOT/bin/go version: go version go1.11.1 linux/amd64
GOROOT/bin/go tool compile -V: compile version go1.11.1
uname -sr: Linux 4.18.12-arch1-1-ARCH
/usr/lib/libc.so.6: GNU C Library (GNU libc) stable release version 2.28.
gdb --version: GNU gdb (GDB) 8.2

Workaround

Wrap Director to also modify RawURL: https://play.golang.org/p/akfhd7Qsemm
Updated as well: https://play.golang.org/p/ydw6fN3wU-l

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bcmills commented Oct 24, 2018

@bcmills bcmills added this to the Unplanned milestone Oct 24, 2018

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