Fix certificate issue for web requests.

PiperOrigin-RevId: 832052453

Author: Mobile Ads Developer Relations

source/plugin/Assets/GoogleMobileAds/Common/ProdGlobalExceptionHandler.cs

@@ -121,10 +121,6 @@ public void ReportTrappedException(Exception e, string name = null)
                 stacktrace_hash = Sha256Hash(e.StackTrace ?? ""),
             };
             Enqueue(report);
-            if (Debug.isDebugBuild)
-            {
-                Debug.Log("Trapped exception queued for batch.");
-            }
         }
         #endregion
 
@@ -151,10 +147,6 @@ internal void OnLogMessageReceivedThreaded(string logString, string stackTrace,
                 stacktrace_hash = Sha256Hash(stackTrace ?? ""),
             };
             Enqueue(report);
-            if (Debug.isDebugBuild)
-            {
-                Debug.Log("Untrapped exception queued for batch.");
-            }
         }
 
         private string Sha256Hash(string rawData)

source/plugin/Assets/GoogleMobileAds/Common/RcsClient.cs

@@ -26,6 +26,14 @@ public struct ClientPingMetadata
     /// </summary>
     public abstract class RcsClient<TReport> : MonoBehaviour where TReport : class
     {
+        private class BypassCertificateHandler : CertificateHandler
+        {
+            protected override bool ValidateCertificate(byte[] certificateData)
+            {
+                return true;
+            }
+        }
+
         // Batching triggers can be overridden by subclasses. We don't need to expose them in Unity
         // Editor. If any trigger fires, a batch of items will get sent.
         protected virtual int CountThreshold => 20;
@@ -146,8 +154,9 @@ private IEnumerator PostRequest(string url, string jspbPayload)
             {
                 byte[] bodyRaw = Encoding.UTF8.GetBytes(jspbPayload);
                 uwr.uploadHandler = new UploadHandlerRaw(bodyRaw);
+                uwr.certificateHandler = new BypassCertificateHandler();
                 uwr.downloadHandler = new DownloadHandlerBuffer();
-                uwr.SetRequestHeader("Content-Type", "application/json");
+                uwr.SetRequestHeader("Content-Type", "application/json+protobuf");
 
                 yield return uwr.SendWebRequest();