[Draft] Fix canceling pin prompt causes host overload

remoting/protocol/v2_authenticator.cc

Index: remoting/protocol/v2_authenticator.cc
diff --git a/remoting/protocol/v2_authenticator.cc b/remoting/protocol/v2_authenticator.cc
index ee5c9d12ad3c55a02674d61aa03b1297aa4fa60f..ac544d04d236351d71d81f09e742880028aec7c6 100644
--- a/remoting/protocol/v2_authenticator.cc
+++ b/remoting/protocol/v2_authenticator.cc
@@ -62,6 +62,7 @@ V2Authenticator::V2Authenticator(
     : certificate_sent_(false),
       key_exchange_impl_(type, shared_secret),
       state_(initial_state),
+      has_auth_started_(false),
       rejection_reason_(INVALID_CREDENTIALS) {
   pending_messages_.push(key_exchange_impl_.GetMessage());
 }
@@ -75,6 +76,10 @@ Authenticator::State V2Authenticator::state() const {
   return state_;
 }
 
+bool V2Authenticator::has_auth_started() const {
+  return has_auth_started_;
+}
+
 Authenticator::RejectionReason V2Authenticator::rejection_reason() const {
   DCHECK_EQ(state(), REJECTED);
   return rejection_reason_;
@@ -130,6 +135,7 @@ void V2Authenticator::ProcessMessageInternal(const buzz::XmlElement* message) {
     switch (result) {
       case P224EncryptedKeyExchange::kResultPending:
         pending_messages_.push(key_exchange_impl_.GetMessage());
+        has_auth_started_ = true;
         break;
 
       case P224EncryptedKeyExchange::kResultFailed:
@@ -143,7 +149,6 @@ void V2Authenticator::ProcessMessageInternal(const buzz::XmlElement* message) {
         return;
     }
   }
-
   state_ = MESSAGE_READY;
 }