Match bid ids

modules/prebidServerBidAdapter.js

@@ -367,13 +367,22 @@ const LEGACY_PROTOCOL = {
  */
 const OPEN_RTB_PROTOCOL = {
 
+  bidMap: {},
+
   buildRequest(s2sBidRequest, adUnits) {
     let imps = [];
 
     // transform ad unit into array of OpenRTB impression objects
     adUnits.forEach(adUnit => {
       let banner;
 
+      adUnit.bids.forEach(bid => {
+        // OpenRTB response contains the adunit code and bidder name. These are
+        // combined to create a unique key for each bid since an id isn't returned
+        const key = `${adUnit.code}${bid.bidder}`;
+        this.bidMap[key] = bid;
+      });
+
       const bannerParams = utils.deepAccess(adUnit, 'mediaTypes.banner');
       if (bannerParams && bannerParams.sizes) {
         // get banner sizes in form [{ w: <int>, h: <int> }, ...]
@@ -412,9 +421,14 @@ const OPEN_RTB_PROTOCOL = {
       // a seatbid object contains a `bid` array and a `seat` string
       response.seatbid.forEach(seatbid => {
         (seatbid.bid || []).forEach(bid => {
+          const bidRequest = utils.getBidRequest(
+            this.bidMap[`${bid.impid}${seatbid.seat}`],
+            bidRequests
+          );
+
           const cpm = bid.price;
           const status = cpm !== 0 ? STATUS.GOOD : STATUS.NO_BID;
-          let bidObject = bidfactory.createBid(status);
+          let bidObject = bidfactory.createBid(status, bidRequest);
 
           bidObject.source = TYPE;
           bidObject.bidderCode = seatbid.seat;

test/spec/modules/prebidServerBidAdapter_spec.js

@@ -530,8 +530,9 @@ describe('S2S Adapter', () => {
 
       sinon.assert.calledOnce(addBidResponse);
       const response = addBidResponse.firstCall.args[1];
-      expect(response).to.have.property('bidderCode', 'appnexus');
       expect(response).to.have.property('statusMessage', 'Bid available');
+      expect(response).to.have.property('bidderCode', 'appnexus');
+      expect(response).to.have.property('adId', '123');
       expect(response).to.have.property('cpm', 0.5);
     });
   });