Client Bidding (C2S) Integration

Client Bidding allows you to run ad auctions on the client side, giving you full control over the bidding process and auction results.

Integration Flow

How It Works:

1. Load Ads in Parallel: Call loadC2SBidAd() for Opera and other ad sources simultaneously
2. Run Client-Side Auction: When ready to show, compare eCPM using getBid().getEcpm()
3. Notify Results: Winner calls notifyWin(), losers call notifyLose()
4. Show Winner: Display the ad with the highest eCPM

Loading Client Bidding Ads

Code Example (Java)

import com.opera.ads.AdBid;
import com.opera.ads.LossReason;

// Native Ads
NativeAdLoader.loadC2SBidAd(context, "PLACEMENT_ID", new NativeAdListener() {
    @Override
    public void onAdLoaded(@NonNull NativeAd nativeAd) {
        // Ad loaded successfully
        mNativeAd = nativeAd;
    }
    // ... other callbacks
});

// Banner Ads
mBannerAdView.loadC2SBidAd(new BannerAdListener() {
    @Override
    public void onAdLoaded(@NonNull BannerAd bannerAd) {
        // Ad loaded successfully
    }
    // ... other callbacks
});

// Interstitial Ads
InterstitialAd.loadC2SBid(context, "PLACEMENT_ID", new InterstitialAdLoadListener() {
    @Override
    public void onAdLoaded(@NonNull InterstitialAd ad) {
        mInterstitialAd = ad;
    }
    // ... other callbacks
});

// Rewarded Ads
RewardedAd.loadC2SBid(context, "PLACEMENT_ID", new RewardedAdLoadListener() {
    @Override
    public void onAdLoaded(@NonNull RewardedAd ad) {
        mRewardedAd = ad;
    }
    // ... other callbacks
});

// Rewarded Interstitial Ads
RewardedInterstitialAd.loadC2SBid(context, "PLACEMENT_ID", new RewardedInterstitialAdLoadListener() {
    @Override
    public void onAdLoaded(@NonNull RewardedInterstitialAd ad) {
        mRewardedInterstitialAd = ad;
    }
    // ... other callbacks
});

// AppOpen Ads
AppOpenAd.loadC2SBid(context, "PLACEMENT_ID", new AppOpenAdLoadListener() {
    @Override
    public void onAdLoaded(@NonNull AppOpenAd ad) {
        mAppOpenAd = ad;
    }
    // ... other callbacks
});

Getting Bid Information

After a client bidding ad loaded successfully, use getBid() to retrieve the bid object:

// Get bid object for any ad format
AdBid bid = nativeAd.getBid();                  // For Native ads
AdBid bid = bannerAdView.getBid();              // For Banner ads
AdBid bid = interstitialAd.getBid();            // For Interstitial ads
AdBid bid = rewardedAd.getBid();                // For Rewarded ads
AdBid bid = rewardedInterstitialAd.getBid();    // For RewardedInterstitial ads
AdBid bid = appOpenAd.getBid();                 // For AppOpen ads

AdBid Interface

The AdBid interface provides methods to get bid information and notify auction results:

public interface AdBid {
    /**
     * Gets the bid price.
     *
     * @return The bid price in USD, expressed as CPM
     */
    @NonNull
    double getEcpm();

    /**
     * Notifies that this ad won the Client Bidding auction.
     *
     * @param secondPrice The second-highest bid price in the auction, in USD, expressed as CPM
     * @param bidderName The second-highest bidder
     */
    void notifyWin(@Nullable Double secondPrice, @Nullable String bidderName);

    /**
     * Notifies that this ad lost the Client Bidding auction.
     *
     * When a loss is notified the ad is marked as invalidated and should NOT be shown later.
     *
     * @param lossReason The reason for losing (see LossReason)
     * @param winnerPrice The highest (winning) bid price in the auction, in USD, expressed as CPM
     * @param winnerBidder The highest bidder
     */
    void notifyLose(LossReason lossReason, @Nullable Double winnerPrice, @Nullable String winnerBidder);
}

LossReason Enum

The LossReason enum defines the possible reasons for losing an auction:

Constant	Description
INTERNAL_ERROR	Internal error occurred during bidding
LOWER_THAN_FLOOR_PRICE	Bid was lower than the floor price
LOWER_THAN_HIGHEST_PRICE	Bid was lower than the highest competing bid

Complete Integration Example

Here's a simplified example showing how to integrate client bidding:

import com.opera.ads.AdBid;
import com.opera.ads.LossReason;

// Step 1: Load client bidding ad
NativeAdLoader.loadC2SBidAd(context, "PLACEMENT_ID", new NativeAdListener() {
    @Override
    public void onAdLoaded(@NonNull NativeAd nativeAd) {
        runAuction(nativeAd);
    }
});

// Step 2: Run auction and notify results
private void runAuction(NativeAd operaAd) {
    AdBid bid = operaAd.getBid();
    if (bid == null) return;

    double operaPrice = bid.getEcpm();
    double competitorPrice = getCompetitorPrice();  // Your auction logic

    if (operaPrice > competitorPrice) {
        // Opera won
        bid.notifyWin(competitorPrice, "COMPETITOR_NETWORK");
        showAd(operaAd);
    } else {
        // Opera lost
        bid.notifyLose(LossReason.LOWER_THAN_HIGHEST_PRICE,
                      competitorPrice, "COMPETITOR_NETWORK");
    }
}

Important Notes

• Notification Methods for Client Bidding Only: notifyWin() and notifyLose() should only be called on ads loaded with loadC2SBidAd()/loadC2SBid() APIs. Calling them on non-C2S bidding ads (loadAd()/load()/loadRtbAd()/loadRtb()) will be ignored.
• eCPM Available for All Ads: getEcpm() can be called on both client bidding ads and non-C2S bidding ads to retrieve the bid price.
• Call Once: Each notification method (notifyWin() or notifyLose()) can only be called once per ad. Duplicate calls will be ignored.
• Auction Notification Required: For client bidding ads, always notify the auction result (either win or loss) to ensure proper reporting and billing.
• Thread Safety: All AdBid methods should be called from the main thread.