fix header + tests

Author: DiMurer

src/main/java/org/prebid/server/bidder/yandex/YandexBidder.java

@@ -81,6 +81,19 @@ public Result<List<HttpRequest<BidRequest>>> makeHttpRequests(BidRequest request
         return Result.of(bidRequests, errors);
     }
 
+    private static String getDomain(BidRequest request) {
+        return Optional.ofNullable(request.getSite())
+                .map(Site::getPage)
+                .map(pageUrl -> {
+                    try {
+                        return new URIBuilder(pageUrl).getHost();
+                    } catch (URISyntaxException e) {
+                        return null;
+                    }
+                })
+                .orElse(null);
+    }
+
     private static String getReferer(BidRequest request) {
         return Optional.ofNullable(request.getSite())
                 .map(Site::getPage)
@@ -117,7 +130,7 @@ private static Imp modifyImp(Imp imp) {
             throw new PreBidException("Imp #%s must contain at least one valid format (banner, video, or native)"
                     .formatted(imp.getId()));
         }
-        
+
         return imp.toBuilder()
                 .displaymanager(DISPLAY_MANAGER)
                 .displaymanagerver(DISPLAY_MANAGER_VERSION)
@@ -131,7 +144,7 @@ private static Banner modifyBanner(Banner banner) {
         if (banner == null) {
             return null;
         }
-        
+
         final Integer weight = banner.getW();
         final Integer height = banner.getH();
         final List<Format> format = banner.getFormat();
@@ -149,7 +162,7 @@ private static Video modifyVideo(Video video) {
         if (video == null) {
             return null;
         }
-        
+
         final Integer width = video.getW();
         final Integer height = video.getH();
         if (width == null || height == null || width == 0 || height == 0) {
@@ -208,7 +221,7 @@ private static MultiMap headers(BidRequest bidRequest) {
         final MultiMap headers = HttpUtil.headers();
 
         headers.add(HttpUtil.X_OPENRTB_VERSION_HEADER, "2.5");
-        HttpUtil.addHeaderIfValueIsNotEmpty(headers, "Referer", getReferer(bidRequest));
+        HttpUtil.addHeaderIfValueIsNotEmpty(headers, "Referer", getDomain(bidRequest));
 
         final Device device = bidRequest.getDevice();
         if (device != null) {

src/test/java/org/prebid/server/bidder/yandex/YandexBidderTest.java

@@ -480,7 +480,7 @@ public void makeHttpRequestsShouldSetExpectedHeaders() {
                         tuple("Content-Type", "application/json;charset=utf-8"),
                         tuple("Accept", "application/json"),
                         tuple("x-openrtb-version", "2.5"),
-                        tuple("Referer", "https://example.com/path?query=value"));
+                        tuple("Referer", "example.com"));
     }
 
     @Test