github.com/google/martian/v3@v3.3.3/header/forwarded_modifier_test.go (about)

     1  // Copyright 2015 Google Inc. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package header
    16  
    17  import (
    18  	"net/http"
    19  	"testing"
    20  )
    21  
    22  func TestSetForwardHeaders(t *testing.T) {
    23  	xfp := "X-Forwarded-Proto"
    24  	xff := "X-Forwarded-For"
    25  	xfh := "X-Forwarded-Host"
    26  	xfu := "X-Forwarded-Url"
    27  
    28  	m := NewForwardedModifier()
    29  	req, err := http.NewRequest("GET", "http://martian.local?key=value", nil)
    30  	if err != nil {
    31  		t.Fatalf("http.NewRequest(): got %v, want no error", err)
    32  	}
    33  	req.RemoteAddr = "10.0.0.1:8112"
    34  
    35  	if m.ModifyRequest(req); err != nil {
    36  		t.Fatalf("ModifyRequest(): got %v, want no error", err)
    37  	}
    38  
    39  	if got, want := req.Header.Get(xfp), "http"; got != want {
    40  		t.Errorf("req.Header.Get(%q): got %q, want %q", xfp, got, want)
    41  	}
    42  	if got, want := req.Header.Get(xff), "10.0.0.1"; got != want {
    43  		t.Errorf("req.Header.Get(%q): got %q, want %q", xff, got, want)
    44  	}
    45  	if got, want := req.Header.Get(xfh), "martian.local"; got != want {
    46  		t.Errorf("req.Header.Get(%q): got %q, want %q", xfh, got, want)
    47  	}
    48  	if got, want := req.Header.Get(xfu), "http://martian.local?key=value"; got != want {
    49  		t.Errorf("req.Header.Get(%q): got %q, want %q", xfh, got, want)
    50  	}
    51  
    52  	// Test with existing X-Forwarded-For.
    53  	req.RemoteAddr = "12.12.12.12"
    54  
    55  	if m.ModifyRequest(req); err != nil {
    56  		t.Fatalf("ModifyRequest(): got %v, want no error", err)
    57  	}
    58  
    59  	if got, want := req.Header.Get(xff), "10.0.0.1, 12.12.12.12"; got != want {
    60  		t.Errorf("req.Header.Get(%q): got %q, want %q", xff, got, want)
    61  	}
    62  
    63  	// Test that proto, host, and URL headers are preserved if already present.
    64  	req, err = http.NewRequest("GET", "http://example.com/path?k=v", nil)
    65  	if err != nil {
    66  		t.Fatalf("http.NewRequest(): got %v, want no error", err)
    67  	}
    68  	req.Header.Set(xfp, "https")
    69  	req.Header.Set(xfh, "preserved.host.com")
    70  	req.Header.Set(xfu, "https://preserved.host.com/foo?x=y")
    71  
    72  	if m.ModifyRequest(req); err != nil {
    73  		t.Fatalf("ModifyRequest(): got %v, want no error", err)
    74  	}
    75  
    76  	if got, want := req.Header.Get(xfp), "https"; got != want {
    77  		t.Errorf("req.Header.Get(%q): got %q, want %q", xfh, got, want)
    78  	}
    79  	if got, want := req.Header.Get(xfh), "preserved.host.com"; got != want {
    80  		t.Errorf("req.Header.Get(%q): got %q, want %q", xfh, got, want)
    81  	}
    82  	if got, want := req.Header.Get(xfu), "https://preserved.host.com/foo?x=y"; got != want {
    83  		t.Errorf("req.Header.Get(%q): got %q, want %q", xfh, got, want)
    84  	}
    85  }