Fix geo details for viewers not showing on CDN connection (#3359)

* Added extraction of first IP address from X-FORWARDED-FOR header

* Added tests to the GetIPAddressFromRequest util method

---------

Co-authored-by: Aziz Rmadi <azizrmadi@Azizs-MacBook-Air.local>

utils/clientId_test.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"net/http/httptest"
+	"testing"
+)
+
+func TestGetIPAddressFromRequest(t *testing.T) {
+
+	expectedResult := "203.0.113.195"
+
+	request := httptest.NewRequest("GET", "/", nil)
+	request.RemoteAddr = "203.0.113.195:41237"
+	//First Test without X-FORWARDED-FOR header
+	result := GetIPAddressFromRequest(request)
+	if result != expectedResult {
+		t.Errorf("Remote address only test failed: Expected %s, got %s", expectedResult, result)
+	}
+
+	//Test with X-FORWARDED-FOR header
+	request.Header.Set("X-FORWARDED-FOR header", "203.0.113.195:41237, 198.51.100.100:38523, 140.248.67.176:12345")
+	result = GetIPAddressFromRequest(request)
+	if result != expectedResult {
+		t.Errorf("X-FORWARD-FOR header test failed: Expected %s, got %s", expectedResult, result)
+	}
+
+}