QUIC Crypto - return the reasons for reject message. Reject reason

net/quic/crypto/quic_crypto_client_config.cc

Index: net/quic/crypto/quic_crypto_client_config.cc
diff --git a/net/quic/crypto/quic_crypto_client_config.cc b/net/quic/crypto/quic_crypto_client_config.cc
index 8dc6a55445727ba66938f43f6306bb4dd4234ad2..9d5e704e1df9cc00bafcf6ca983d93aa60590768 100644
--- a/net/quic/crypto/quic_crypto_client_config.cc
+++ b/net/quic/crypto/quic_crypto_client_config.cc
@@ -587,6 +587,17 @@ QuicErrorCode QuicCryptoClientConfig::ProcessRejection(
     }
   }
 
+  const QuicTag* reject_reasons;
+  size_t num_reject_reasons;
+  if (rej.GetTaglist(kRREJ, &reject_reasons,
+                     &num_reject_reasons) == QUIC_NO_ERROR) {
+#if defined(DEBUG)
+    for (size_t i = 0; i < num_reject_reasons; ++i) {
+      DVLOG(1) << "Reasons for rejection: " << reject_reasons[i];
+    }
+#endif
+  }
+
   return QUIC_NO_ERROR;
 }