To act as a minimum reverse proxy with only the GetUpstream implementation, make it execute SetXForwarded().

[k1LoW]

ref: #28

SSIA

[github-actions]

BenchmarkNGINX-2

	main (-)	#29 (82ae680)	+/-
Number of iterations	10000	10000	0
Nanoseconds per iteration	595203 ns/op	603557 ns/op	8354 ns/op
Bytes allocated per iteration	17611 B/op	17603 B/op	-8 B/op
Allocs per iteration	137 allocs/op	136 allocs/op	-1 allocs/op

Metadata

	main (-)	#29 (82ae680)
goos	linux	linux
goarch	amd64	amd64
pkg	github.com/k1LoW/rp	github.com/k1LoW/rp
cpu	Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz	Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz

BenchmarkRP-2

	main (-)	#29 (82ae680)	+/-
Number of iterations	10000	10000	0
Nanoseconds per iteration	338333 ns/op	329811 ns/op	-8522 ns/op
Bytes allocated per iteration	63764 B/op	63807 B/op	43 B/op
Allocs per iteration	184 allocs/op	187 allocs/op	3 allocs/op

Metadata

	main (-)	#29 (82ae680)
goos	linux	linux
goarch	amd64	amd64
pkg	github.com/k1LoW/rp	github.com/k1LoW/rp
cpu	Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz	Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz

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Reported by octocov

[github-actions]

Code Metrics Report

	main (9f9d7c4)	#29 (82ae680)	+/-
Coverage	55.4%	57.6%	+2.3%
Code to Test Ratio	1:4.1	1:3.1	-1.0
Test Execution Time	1m1s	1m2s	+1s

Details

  |                     | main (9f9d7c4) | #29 (82ae680) |  +/-  |
  |---------------------|----------------|---------------|-------|
+ | Coverage            |          55.4% |         57.6% | +2.3% |
  |   Files             |              5 |             5 |     0 |
  |   Lines             |            139 |           170 |   +31 |
+ |   Covered           |             77 |            98 |   +21 |
- | Code to Test Ratio  |          1:4.1 |         1:3.1 |  -1.0 |
  |   Code              |            135 |           185 |   +50 |
+ |   Test              |            555 |           573 |   +18 |
- | Test Execution Time |           1m1s |          1m2s |   +1s |

Code coverage of files in pull request scope (77.8% → 85.7%)

Files	Coverage	+/-
rp.go	85.7%	+7.9%

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Reported by octocov