Add request/remote resource

docs/source/concepts/resource_tree.rst

@@ -12,8 +12,6 @@ to compose the response.
 We access the resource tree easily with the ``kapow set`` and ``kapow get``
 subcommands.
 
-.. // DOING #85: /request/remote
-
 .. // DOING #10: /route/id
 
 .. // DOING #113: /request/ssl/client/i/dn
@@ -30,6 +28,7 @@ Overview
     │  ├──── host                   Host part of the URL
     │  ├──── version                HTTP version of the request
     │  ├──── path                   Complete URL path (URL-unquoted)
+    │  ├──── remote                 IP address of client
     │  ├──── matches
     │  │     └──── <name>           Previously matched URL path parts
     │  ├──── params

internal/server/data/resource.go

@@ -68,6 +68,11 @@ func getRequestPath(w http.ResponseWriter, r *http.Request, h *model.Handler) {
 	_, _ = w.Write([]byte(h.Request.URL.Path))
 }
 
+func getRequestRemote(w http.ResponseWriter, r *http.Request, h *model.Handler) {
+	w.Header().Add("Content-Type", "application/octet-stream")
+	_, _ = w.Write([]byte(r.RemoteAddr))
+}
+
 func getRequestMatches(w http.ResponseWriter, r *http.Request, h *model.Handler) {
 	w.Header().Add("Content-Type", "application/octet-stream")
 	name := mux.Vars(r)["name"]

internal/server/data/resource_test.go

@@ -26,6 +26,7 @@ import (
 	"net/http/httptest"
 	"net/url"
 	"reflect"
+	"regexp"
 	"strings"
 	"testing"
 
@@ -286,8 +287,6 @@ func TestGetRequestVersionReturnsTheCorrectHttpVersion(t *testing.T) {
 	}
 }
 
-// DOING #85: /request/remote
-
 func TestGetRequestPath200sOnHappyPath(t *testing.T) {
 	h := model.Handler{
 		Request: httptest.NewRequest("POST", "/", nil),
@@ -352,6 +351,57 @@ func TestGetRequestPathDoesntReturnQueryStringParams(t *testing.T) {
 	}
 }
 
+func TestGetRequestRemote200sOnHappyPath(t *testing.T) {
+	h := model.Handler{
+		Request: httptest.NewRequest("POST", "/", nil),
+		Writer:  httptest.NewRecorder(),
+	}
+	r := httptest.NewRequest("GET", "/not-important-here", nil)
+	w := httptest.NewRecorder()
+
+	getRequestRemote(w, r, &h)
+
+	res := w.Result()
+	if res.StatusCode != http.StatusOK {
+		t.Errorf("Status code mismatch. Expected: %d, got: %d", http.StatusOK, res.StatusCode)
+	}
+}
+
+func TestGetRequestRemoteSetsOctectStreamContentType(t *testing.T) {
+	h := model.Handler{
+		Request: httptest.NewRequest("POST", "/", nil),
+		Writer:  httptest.NewRecorder(),
+	}
+	r := httptest.NewRequest("GET", "/not-important-here", nil)
+	w := httptest.NewRecorder()
+
+	getRequestRemote(w, r, &h)
+
+	res := w.Result()
+	if ct := res.Header.Get("Content-Type"); ct != "application/octet-stream" {
+		t.Errorf("Content Type mismatch. Expected: %v, got: %v", "application/octet-stream", ct)
+	}
+}
+
+func TestGetRequestRemoteReturnsTheCorrectRemote(t *testing.T) {
+	h := model.Handler{
+		Request: httptest.NewRequest("POST", "http://www.foo.bar:8080/", nil),
+		Writer:  httptest.NewRecorder(),
+	}
+	r := httptest.NewRequest("GET", "/not-important-here", nil)
+	w := httptest.NewRecorder()
+
+	getRequestRemote(w, r, &h)
+
+	res := w.Result()
+	body, _ := ioutil.ReadAll(res.Body)
+	rem := body[:bytes.Index(body, []byte(":"))]
+	re, _ := regexp.Compile(`^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$`)
+	if found := re.Match(rem); !found {
+		t.Errorf("Version mismatch. Expected %v, got %v", `^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$`, string(rem))
+	}
+}
+
 // DOING #113: /request/ssl/client/i/dn
 
 func createMuxRequest(pattern, url, method string, content io.Reader) (req *http.Request) {