1 files changed, 45 insertions, 0 deletions
diff --git a/chromium/net/third_party/quiche/src/quiche/quic/tools/quic_reject_reason_decoder_bin.cc b/chromium/net/third_party/quiche/src/quiche/quic/tools/quic_reject_reason_decoder_bin.cc
new file mode 100644
index 00000000000..661e3d9122e
--- /dev/null
+++ b/chromium/net/third_party/quiche/src/quiche/quic/tools/quic_reject_reason_decoder_bin.cc
@@ -0,0 +1,45 @@
+// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Decodes the packet HandshakeFailureReason from the chromium histogram
+// Net.QuicClientHelloRejectReasons
+
+#include <iostream>
+
+#include "absl/strings/numbers.h"
+#include "quiche/quic/core/crypto/crypto_handshake.h"
+#include "quiche/quic/core/crypto/crypto_utils.h"
+#include "quiche/quic/platform/api/quic_flags.h"
+#include "quiche/common/platform/api/quiche_command_line_flags.h"
+#include "quiche/common/quiche_text_utils.h"
+
+using quic::CryptoUtils;
+using quic::HandshakeFailureReason;
+using quic::MAX_FAILURE_REASON;
+
+int main(int argc, char* argv[]) {
+  const char* usage = "Usage: quic_reject_reason_decoder <packed_reason>";
+  std::vector<std::string> args =
+      quiche::QuicheParseCommandLineFlags(usage, argc, argv);
+
+  if (args.size() != 1) {
+    std::cerr << usage << std::endl;
+    return 1;
+  }
+
+  uint32_t packed_error = 0;
+  if (!absl::SimpleAtoi(args[0], &packed_error)) {
+    std::cerr << "Unable to parse: " << args[0] << "\n";
+    return 2;
+  }
+
+  for (int i = 1; i < MAX_FAILURE_REASON; ++i) {
+    if ((packed_error & (1 << (i - 1))) == 0) {
+      continue;
+    }
+    HandshakeFailureReason reason = static_cast<HandshakeFailureReason>(i);
+    std::cout << CryptoUtils::HandshakeFailureReasonToString(reason) << "\n";
+  }
+  return 0;
+}