diff --git a/quic/core/tls_client_handshaker.cc b/quic/core/tls_client_handshaker.cc
index b0a7d36..6740fbd 100644
--- a/quic/core/tls_client_handshaker.cc
+++ b/quic/core/tls_client_handshaker.cc
@@ -163,7 +163,7 @@
 
 bool TlsClientHandshaker::ProcessTransportParameters(
     std::string* error_details) {
-  TransportParameters params;
+  received_transport_params_ = std::make_unique<TransportParameters>();
   const uint8_t* param_bytes;
   size_t param_bytes_len;
   SSL_get_peer_quic_transport_params(ssl(), &param_bytes, &param_bytes_len);
@@ -174,7 +174,8 @@
   std::string parse_error_details;
   if (!ParseTransportParameters(
           session()->connection()->version(), Perspective::IS_SERVER,
-          param_bytes, param_bytes_len, &params, &parse_error_details)) {
+          param_bytes, param_bytes_len, received_transport_params_.get(),
+          &parse_error_details)) {
     DCHECK(!parse_error_details.empty());
     *error_details =
         "Unable to parse server's transport parameters: " + parse_error_details;
@@ -183,24 +184,27 @@
 
   // When interoperating with non-Google implementations that do not send
   // the version extension, set it to what we expect.
-  if (params.version == 0) {
-    params.version = CreateQuicVersionLabel(session()->connection()->version());
+  if (received_transport_params_->version == 0) {
+    received_transport_params_->version =
+        CreateQuicVersionLabel(session()->connection()->version());
   }
-  if (params.supported_versions.empty()) {
-    params.supported_versions.push_back(params.version);
+  if (received_transport_params_->supported_versions.empty()) {
+    received_transport_params_->supported_versions.push_back(
+        received_transport_params_->version);
   }
 
-  if (params.version !=
+  if (received_transport_params_->version !=
       CreateQuicVersionLabel(session()->connection()->version())) {
     *error_details = "Version mismatch detected";
     return false;
   }
   if (CryptoUtils::ValidateServerHelloVersions(
-          params.supported_versions,
+          received_transport_params_->supported_versions,
           session()->connection()->server_supported_versions(),
           error_details) != QUIC_NO_ERROR ||
       session()->config()->ProcessTransportParameters(
-          params, SERVER, error_details) != QUIC_NO_ERROR) {
+          *received_transport_params_, SERVER, error_details) !=
+          QUIC_NO_ERROR) {
     DCHECK(!error_details->empty());
     return false;
   }
diff --git a/quic/core/tls_client_handshaker.h b/quic/core/tls_client_handshaker.h
index d9ee760..5dab631 100644
--- a/quic/core/tls_client_handshaker.h
+++ b/quic/core/tls_client_handshaker.h
@@ -5,11 +5,13 @@
 #ifndef QUICHE_QUIC_CORE_TLS_CLIENT_HANDSHAKER_H_
 #define QUICHE_QUIC_CORE_TLS_CLIENT_HANDSHAKER_H_
 
+#include <memory>
 #include <string>
 
 #include "third_party/boringssl/src/include/openssl/ssl.h"
 #include "net/third_party/quiche/src/quic/core/crypto/proof_verifier.h"
 #include "net/third_party/quiche/src/quic/core/crypto/tls_client_connection.h"
+#include "net/third_party/quiche/src/quic/core/crypto/transport_parameters.h"
 #include "net/third_party/quiche/src/quic/core/quic_crypto_client_stream.h"
 #include "net/third_party/quiche/src/quic/core/quic_crypto_stream.h"
 #include "net/third_party/quiche/src/quic/core/tls_handshaker.h"
@@ -156,6 +158,8 @@
   bool allow_empty_alpn_for_tests_ = false;
 
   TlsClientConnection tls_connection_;
+
+  std::unique_ptr<TransportParameters> received_transport_params_ = nullptr;
 };
 
 }  // namespace quic