QUIC - Merging internal changes to pack reject reason to keep in sync

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 b37befea03e661e50600e9ec3b5b2136cac00d8d..7d866a264098f5b3ea1811cdfc47964a8f57353f 100644
--- a/net/quic/crypto/quic_crypto_client_config.cc
+++ b/net/quic/crypto/quic_crypto_client_config.cc
@@ -593,15 +593,56 @@ QuicErrorCode QuicCryptoClientConfig::ProcessRejection(
   if (rej.GetTaglist(kRREJ, &reject_reasons,
                      &num_reject_reasons) == QUIC_NO_ERROR) {
 #if defined(DEBUG)
+    uint32 packed_error = 0;
     for (size_t i = 0; i < num_reject_reasons; ++i) {
-      DVLOG(1) << "Reasons for rejection: " << reject_reasons[i];
+      HandshakeFailureReason reason =
+          static_cast<HandshakeFailureReason>(reject_reasons[i]);
+      packed_error |= RejectReasonToPackedError(reason);
     }
+    DVLOG(1) << "Reasons for rejection: " << packed_error;
 #endif
   }
 
   return QUIC_NO_ERROR;
 }
 
+uint32 QuicCryptoClientConfig::RejectReasonToPackedError(
+    HandshakeFailureReason reason) {
+  switch (reason) {
+    case HANDSHAKE_OK:
+      return 0;
+    case CLIENT_NONCE_UNKNOWN_FAILURE:
+      return 1u << 5;
+    case CLIENT_NONCE_INVALID_FAILURE:
+      return 2u << 5;
+    case SERVER_NONCE_INVALID_FAILURE:
+      return 1u << 10;
+    case SERVER_NONCE_DECRYPTION_FAILURE:
+      return 2u << 10;
+    case SERVER_NONCE_NOT_UNIQUE_FAILURE:
+      return 3u << 10;
+    case SERVER_CONFIG_INCHOATE_HELLO_FAILURE:
+      return 1u << 15;
+    case SERVER_CONFIG_UNKNOWN_CONFIG_FAILURE:
+      return 2u << 15;
+    case SOURCE_ADDRESS_TOKEN_INVALID_FAILURE:
+      return 1u << 20;
+    case SOURCE_ADDRESS_TOKEN_DECRYPTION_FAILURE:
+      return 2u << 20;
+    case SOURCE_ADDRESS_TOKEN_PARSE_FAILURE:
+      return 3u << 20;
+    case SOURCE_ADDRESS_TOKEN_DIFFERENT_IP_ADDRESS_FAILURE:
+      return 4u << 20;
+    case SOURCE_ADDRESS_TOKEN_CLOCK_SKEW_FAILURE:
+      return 5u << 20;
+    case SOURCE_ADDRESS_TOKEN_EXPIRED_FAILURE:
+      return 6u << 20;
+    default:
+      LOG(FATAL) << "Unsupported RejectReason: " << reason;
+      return 1u << 31;
+  }
+}
+
 QuicErrorCode QuicCryptoClientConfig::ProcessServerHello(
     const CryptoHandshakeMessage& server_hello,
     QuicConnectionId connection_id,