restart remote auth on cancel opcode

src/remoteauth/remoteauthclient.cpp

@@ -58,6 +58,8 @@ void RemoteAuthClient::OnGatewayMessage(const std::string &str) {
         HandleGatewayPendingTicket(j);
     } else if (opcode == "pending_login") {
         HandleGatewayPendingLogin(j);
+    } else if (opcode == "cancel") {
+        HandleGatewayCancel(j);
     }
 }
 
@@ -125,6 +127,11 @@ void RemoteAuthClient::HandleGatewayPendingLogin(const nlohmann::json &j) {
     m_signal_pending_login.emit();
 }
 
+void RemoteAuthClient::HandleGatewayCancel(const nlohmann::json &j) {
+    Stop();
+    Start();
+}
+
 void RemoteAuthClient::OnRemoteAuthLoginResponse(const std::optional<std::string> &encrypted_token, DiscordError err) {
     if (!encrypted_token.has_value()) {
         m_log->error("Remote auth login failed: {}", static_cast<int>(err));

src/remoteauth/remoteauthclient.hpp

@@ -23,6 +23,7 @@ private:
     void HandleGatewayPendingRemoteInit(const nlohmann::json &j);
     void HandleGatewayPendingTicket(const nlohmann::json &j);
     void HandleGatewayPendingLogin(const nlohmann::json &j);
+    void HandleGatewayCancel(const nlohmann::json &j);
 
     void OnRemoteAuthLoginResponse(const std::optional<std::string> &encrypted_token, DiscordError err);