LibIMAP+Mail+test-imap: Let a Promise result type be non-optional

The Empty type was used only when parsing a response failed. The
failures will now go to Promise's error type.

Userland/Applications/Mail/MailWidget.cpp

@@ -137,7 +137,7 @@ ErrorOr<bool> MailWidget::connect_and_login()
 
     m_statusbar->set_text(String::formatted("Connected. Logging in as {}...", username).release_value_but_fixme_should_propagate_errors());
 
-    auto response = TRY(m_imap_client->login(username, password)->await()).release_value();
+    auto response = TRY(m_imap_client->login(username, password)->await());
 
     if (response.status() != IMAP::ResponseStatus::OK) {
         dbgln("Failed to login. The server says: '{}'", response.response_text());
@@ -147,7 +147,7 @@ ErrorOr<bool> MailWidget::connect_and_login()
     }
 
     m_statusbar->set_text("Logged in. Loading mailboxes..."_string);
-    response = TRY(m_imap_client->list(""sv, "*"sv)->await()).release_value();
+    response = TRY(m_imap_client->list(""sv, "*"sv)->await());
 
     if (response.status() != IMAP::ResponseStatus::OK) {
         dbgln("Failed to retrieve mailboxes. The server says: '{}'", response.response_text());
@@ -174,7 +174,7 @@ void MailWidget::on_window_close()
         // User closed main window before a connection was established
         return;
     }
-    auto response = move(MUST(m_imap_client->send_simple_command(IMAP::CommandType::Logout)->await()).release_value().get<IMAP::SolidResponse>());
+    auto response = move(MUST(m_imap_client->send_simple_command(IMAP::CommandType::Logout)->await()).get<IMAP::SolidResponse>());
     VERIFY(response.status() == IMAP::ResponseStatus::OK);
 
     m_imap_client->close();
@@ -265,7 +265,7 @@ void MailWidget::selected_mailbox()
     if (mailbox.flags & (unsigned)IMAP::MailboxFlag::NoSelect)
         return;
 
-    auto response = MUST(m_imap_client->select(mailbox.name)->await()).release_value();
+    auto response = MUST(m_imap_client->select(mailbox.name)->await());
 
     if (response.status() != IMAP::ResponseStatus::OK) {
         dbgln("Failed to select mailbox. The server says: '{}'", response.response_text());
@@ -297,7 +297,7 @@ void MailWidget::selected_mailbox()
         },
     };
 
-    auto fetch_response = MUST(m_imap_client->fetch(fetch_command, false)->await()).release_value();
+    auto fetch_response = MUST(m_imap_client->fetch(fetch_command, false)->await());
     if (fetch_response.status() != IMAP::ResponseStatus::OK) {
         dbgln("Failed to retrieve subject/from for e-mails. The server says: '{}'", response.response_text());
         m_statusbar->set_text(String::formatted("[{}]: Failed to fetch messages :^(", mailbox.name).release_value_but_fixme_should_propagate_errors());
@@ -452,7 +452,7 @@ void MailWidget::selected_email_to_load()
         },
     };
 
-    auto fetch_response = MUST(m_imap_client->fetch(fetch_command, false)->await()).release_value();
+    auto fetch_response = MUST(m_imap_client->fetch(fetch_command, false)->await());
 
     if (fetch_response.status() != IMAP::ResponseStatus::OK) {
         dbgln("Failed to retrieve the body structure of the selected e-mail. The server says: '{}'", fetch_response.response_text());
@@ -516,7 +516,7 @@ void MailWidget::selected_email_to_load()
         },
     };
 
-    fetch_response = MUST(m_imap_client->fetch(fetch_command, false)->await()).release_value();
+    fetch_response = MUST(m_imap_client->fetch(fetch_command, false)->await());
 
     if (fetch_response.status() != IMAP::ResponseStatus::OK) {
         dbgln("Failed to retrieve the body of the selected e-mail. The server says: '{}'", fetch_response.response_text());

Userland/Libraries/LibIMAP/Client.cpp

@@ -171,12 +171,12 @@ ErrorOr<void> Client::send_raw(StringView data)
     return {};
 }
 
-NonnullRefPtr<Promise<Optional<Response>>> Client::send_command(Command&& command)
+NonnullRefPtr<Promise<Response>> Client::send_command(Command&& command)
 {
     m_command_queue.append(move(command));
     m_current_command++;
 
-    auto promise = Promise<Optional<Response>>::construct();
+    auto promise = Promise<Response>::construct();
     m_pending_promises.append(promise);
 
     if (m_pending_promises.size() == 1) {
@@ -189,22 +189,22 @@ NonnullRefPtr<Promise<Optional<Response>>> Client::send_command(Command&& comman
 }
 
 template<typename T>
-NonnullRefPtr<Promise<Optional<T>>> cast_promise(NonnullRefPtr<Promise<Optional<Response>>> promise_variant)
+NonnullRefPtr<Promise<T>> cast_promise(NonnullRefPtr<Promise<Response>> promise_variant)
 {
-    auto new_promise = promise_variant->map<Optional<T>>(
-        [](Optional<Response>& variant) {
-            return move(variant->get<T>());
+    auto new_promise = promise_variant->map<T>(
+        [](Response& variant) {
+            return move(variant.get<T>());
         });
     return new_promise;
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::login(StringView username, StringView password)
+NonnullRefPtr<Promise<SolidResponse>> Client::login(StringView username, StringView password)
 {
     auto command = Command { CommandType::Login, m_current_command, { serialize_astring(username), serialize_astring(password) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::list(StringView reference_name, StringView mailbox)
+NonnullRefPtr<Promise<SolidResponse>> Client::list(StringView reference_name, StringView mailbox)
 {
     auto command = Command { CommandType::List, m_current_command,
         { DeprecatedString::formatted("\"{}\"", reference_name),
@@ -212,7 +212,7 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::list(StringView referenc
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::lsub(StringView reference_name, StringView mailbox)
+NonnullRefPtr<Promise<SolidResponse>> Client::lsub(StringView reference_name, StringView mailbox)
 {
     auto command = Command { CommandType::ListSub, m_current_command,
         { DeprecatedString::formatted("\"{}\"", reference_name),
@@ -220,19 +220,19 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::lsub(StringView referenc
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::fetch(FetchCommand request, bool uid)
+NonnullRefPtr<Promise<SolidResponse>> Client::fetch(FetchCommand request, bool uid)
 {
     auto command = Command { uid ? CommandType::UIDFetch : CommandType::Fetch, m_current_command, { request.serialize() } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<Response>>> Client::send_simple_command(CommandType type)
+NonnullRefPtr<Promise<Response>> Client::send_simple_command(CommandType type)
 {
     auto command = Command { type, m_current_command, {} };
     return send_command(move(command));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::select(StringView string)
+NonnullRefPtr<Promise<SolidResponse>> Client::select(StringView string)
 {
     auto command = Command { CommandType::Select, m_current_command, { serialize_astring(string) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
@@ -255,8 +255,7 @@ ErrorOr<void> Client::handle_parsed_response(ParseStatus&& parse_status)
         if (parse_status.response.has_value()) {
             m_expecting_response = false;
             should_send_next = parse_status.response->has<SolidResponse>();
-            m_pending_promises.first()->resolve(move(parse_status.response));
-            m_pending_promises.remove(0);
+            m_pending_promises.take_first()->resolve(parse_status.response.release_value());
         }
 
         if (should_send_next && !m_command_queue.is_empty()) {
@@ -286,25 +285,25 @@ ErrorOr<void> Client::send_next_command()
     return {};
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::examine(StringView string)
+NonnullRefPtr<Promise<SolidResponse>> Client::examine(StringView string)
 {
     auto command = Command { CommandType::Examine, m_current_command, { serialize_astring(string) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::create_mailbox(StringView name)
+NonnullRefPtr<Promise<SolidResponse>> Client::create_mailbox(StringView name)
 {
     auto command = Command { CommandType::Create, m_current_command, { serialize_astring(name) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::delete_mailbox(StringView name)
+NonnullRefPtr<Promise<SolidResponse>> Client::delete_mailbox(StringView name)
 {
     auto command = Command { CommandType::Delete, m_current_command, { serialize_astring(name) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::store(StoreMethod method, Sequence sequence_set, bool silent, Vector<DeprecatedString> const& flags, bool uid)
+NonnullRefPtr<Promise<SolidResponse>> Client::store(StoreMethod method, Sequence sequence_set, bool silent, Vector<DeprecatedString> const& flags, bool uid)
 {
     StringBuilder data_item_name;
     switch (method) {
@@ -330,7 +329,7 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::store(StoreMethod method
     auto command = Command { uid ? CommandType::UIDStore : CommandType::Store, m_current_command, { sequence_set.serialize(), data_item_name.to_deprecated_string(), flags_builder.to_deprecated_string() } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::search(Optional<DeprecatedString> charset, Vector<SearchKey>&& keys, bool uid)
+NonnullRefPtr<Promise<SolidResponse>> Client::search(Optional<DeprecatedString> charset, Vector<SearchKey>&& keys, bool uid)
 {
     Vector<DeprecatedString> args;
     if (charset.has_value()) {
@@ -344,21 +343,21 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::search(Optional<Deprecat
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<ContinueRequest>>> Client::idle()
+NonnullRefPtr<Promise<ContinueRequest>> Client::idle()
 {
     auto promise = send_simple_command(CommandType::Idle);
     return cast_promise<ContinueRequest>(promise);
 }
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::finish_idle()
+NonnullRefPtr<Promise<SolidResponse>> Client::finish_idle()
 {
-    auto promise = Promise<Optional<Response>>::construct();
+    auto promise = Promise<Response>::construct();
     m_pending_promises.append(promise);
     MUST(send_raw("DONE"sv));
     m_expecting_response = true;
     return cast_promise<SolidResponse>(promise);
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::status(StringView mailbox, Vector<StatusItemType> const& types)
+NonnullRefPtr<Promise<SolidResponse>> Client::status(StringView mailbox, Vector<StatusItemType> const& types)
 {
     Vector<DeprecatedString> args;
     for (auto type : types) {
@@ -388,7 +387,7 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::status(StringView mailbo
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
 
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::append(StringView mailbox, Message&& message, Optional<Vector<DeprecatedString>> flags, Optional<Core::DateTime> date_time)
+NonnullRefPtr<Promise<SolidResponse>> Client::append(StringView mailbox, Message&& message, Optional<Vector<DeprecatedString>> flags, Optional<Core::DateTime> date_time)
 {
     Vector<DeprecatedString> args = { mailbox };
     if (flags.has_value()) {
@@ -405,7 +404,7 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::append(StringView mailbo
 
     auto continue_req = send_command(Command { CommandType::Append, m_current_command, args });
 
-    auto response_promise = Promise<Optional<Response>>::construct();
+    auto response_promise = Promise<Response>::construct();
     m_pending_promises.append(response_promise);
 
     continue_req->on_resolution = [this, message2 { move(message) }](auto&) -> ErrorOr<void> {
@@ -420,27 +419,27 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::append(StringView mailbo
 
     return cast_promise<SolidResponse>(response_promise);
 }
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::subscribe(StringView mailbox)
+NonnullRefPtr<Promise<SolidResponse>> Client::subscribe(StringView mailbox)
 {
     auto command = Command { CommandType::Subscribe, m_current_command, { serialize_astring(mailbox) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::unsubscribe(StringView mailbox)
+NonnullRefPtr<Promise<SolidResponse>> Client::unsubscribe(StringView mailbox)
 {
     auto command = Command { CommandType::Unsubscribe, m_current_command, { serialize_astring(mailbox) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
-NonnullRefPtr<Promise<Optional<Response>>> Client::authenticate(StringView method)
+NonnullRefPtr<Promise<Response>> Client::authenticate(StringView method)
 {
     auto command = Command { CommandType::Authenticate, m_current_command, { method } };
     return send_command(move(command));
 }
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::rename(StringView from, StringView to)
+NonnullRefPtr<Promise<SolidResponse>> Client::rename(StringView from, StringView to)
 {
     auto command = Command { CommandType::Rename, m_current_command, { serialize_astring(from), serialize_astring(to) } };
     return cast_promise<SolidResponse>(send_command(move(command)));
 }
-NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::copy(Sequence sequence_set, StringView name, bool uid)
+NonnullRefPtr<Promise<SolidResponse>> Client::copy(Sequence sequence_set, StringView name, bool uid)
 {
     auto command = Command {
         uid ? CommandType::UIDCopy : CommandType::Copy, m_current_command, { sequence_set.serialize(), serialize_astring(name) }

Userland/Libraries/LibIMAP/Client.h

@@ -30,28 +30,28 @@ public:
         return m_connect_pending;
     }
 
-    NonnullRefPtr<Promise<Optional<Response>>> send_command(Command&&);
-    NonnullRefPtr<Promise<Optional<Response>>> send_simple_command(CommandType);
+    NonnullRefPtr<Promise<Response>> send_command(Command&&);
+    NonnullRefPtr<Promise<Response>> send_simple_command(CommandType);
     ErrorOr<void> send_raw(StringView data);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> login(StringView username, StringView password);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> list(StringView reference_name, StringView mailbox_name);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> lsub(StringView reference_name, StringView mailbox_name);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> select(StringView string);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> examine(StringView string);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> search(Optional<DeprecatedString> charset, Vector<SearchKey>&& search_keys, bool uid);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> fetch(FetchCommand request, bool uid);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> store(StoreMethod, Sequence, bool silent, Vector<DeprecatedString> const& flags, bool uid);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> copy(Sequence sequence_set, StringView name, bool uid);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> create_mailbox(StringView name);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> delete_mailbox(StringView name);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> subscribe(StringView mailbox);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> unsubscribe(StringView mailbox);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> rename(StringView from, StringView to);
-    NonnullRefPtr<Promise<Optional<Response>>> authenticate(StringView method);
-    NonnullRefPtr<Promise<Optional<ContinueRequest>>> idle();
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> finish_idle();
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> status(StringView mailbox, Vector<StatusItemType> const& types);
-    NonnullRefPtr<Promise<Optional<SolidResponse>>> append(StringView mailbox, Message&& message, Optional<Vector<DeprecatedString>> flags = {}, Optional<Core::DateTime> date_time = {});
+    NonnullRefPtr<Promise<SolidResponse>> login(StringView username, StringView password);
+    NonnullRefPtr<Promise<SolidResponse>> list(StringView reference_name, StringView mailbox_name);
+    NonnullRefPtr<Promise<SolidResponse>> lsub(StringView reference_name, StringView mailbox_name);
+    NonnullRefPtr<Promise<SolidResponse>> select(StringView string);
+    NonnullRefPtr<Promise<SolidResponse>> examine(StringView string);
+    NonnullRefPtr<Promise<SolidResponse>> search(Optional<DeprecatedString> charset, Vector<SearchKey>&& search_keys, bool uid);
+    NonnullRefPtr<Promise<SolidResponse>> fetch(FetchCommand request, bool uid);
+    NonnullRefPtr<Promise<SolidResponse>> store(StoreMethod, Sequence, bool silent, Vector<DeprecatedString> const& flags, bool uid);
+    NonnullRefPtr<Promise<SolidResponse>> copy(Sequence sequence_set, StringView name, bool uid);
+    NonnullRefPtr<Promise<SolidResponse>> create_mailbox(StringView name);
+    NonnullRefPtr<Promise<SolidResponse>> delete_mailbox(StringView name);
+    NonnullRefPtr<Promise<SolidResponse>> subscribe(StringView mailbox);
+    NonnullRefPtr<Promise<SolidResponse>> unsubscribe(StringView mailbox);
+    NonnullRefPtr<Promise<SolidResponse>> rename(StringView from, StringView to);
+    NonnullRefPtr<Promise<Response>> authenticate(StringView method);
+    NonnullRefPtr<Promise<ContinueRequest>> idle();
+    NonnullRefPtr<Promise<SolidResponse>> finish_idle();
+    NonnullRefPtr<Promise<SolidResponse>> status(StringView mailbox, Vector<StatusItemType> const& types);
+    NonnullRefPtr<Promise<SolidResponse>> append(StringView mailbox, Message&& message, Optional<Vector<DeprecatedString>> flags = {}, Optional<Core::DateTime> date_time = {});
 
     bool is_open();
     void close();
@@ -77,7 +77,7 @@ private:
     int m_current_command = 1;
 
     // Sent but response not received
-    Vector<RefPtr<Promise<Optional<Response>>>> m_pending_promises;
+    Vector<NonnullRefPtr<Promise<Response>>> m_pending_promises;
     // Not yet sent
     Vector<Command> m_command_queue {};
 

Userland/Utilities/test-imap.cpp

@@ -46,18 +46,18 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     auto client = TRY(tls ? IMAP::Client::connect_tls(host, port) : IMAP::Client::connect_plaintext(host, port));
     TRY(client->connection_promise()->await());
 
-    auto response = TRY(client->login(username, password.view())->await()).release_value();
+    auto response = TRY(client->login(username, password.view())->await());
     outln("[LOGIN] Login response: {}", response.response_text());
 
-    response = move(TRY(client->send_simple_command(IMAP::CommandType::Capability)->await()).value().get<IMAP::SolidResponse>());
+    response = move(TRY(client->send_simple_command(IMAP::CommandType::Capability)->await()).get<IMAP::SolidResponse>());
     outln("[CAPABILITY] First capability: {}", response.data().capabilities().first());
     bool idle_supported = !response.data().capabilities().find_if([](auto capability) { return capability.equals_ignoring_ascii_case("IDLE"sv); }).is_end();
 
-    response = TRY(client->list(""sv, "*"sv)->await()).release_value();
+    response = TRY(client->list(""sv, "*"sv)->await());
     outln("[LIST] First mailbox: {}", response.data().list_items().first().name);
 
     auto mailbox = "Inbox"sv;
-    response = TRY(client->select(mailbox)->await()).release_value();
+    response = TRY(client->select(mailbox)->await());
     outln("[SELECT] Select response: {}", response.response_text());
 
     auto message = Message {
@@ -71,7 +71,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         "So, \"Hello\"."
     };
     auto promise = client->append("INBOX"sv, move(message));
-    response = TRY(promise->await()).release_value();
+    response = TRY(promise->await());
     outln("[APPEND] Response: {}", response.response_text());
 
     Vector<IMAP::SearchKey> keys;
@@ -79,13 +79,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         IMAP::SearchKey::From { "jdoe@machine.example" } });
     keys.append(IMAP::SearchKey {
         IMAP::SearchKey::Subject { "Saying Hello" } });
-    response = TRY(client->search({}, move(keys), false)->await()).release_value();
+    response = TRY(client->search({}, move(keys), false)->await());
 
     Vector<unsigned> search_results = move(response.data().search_results());
     auto added_message = search_results.first();
     outln("[SEARCH] Number of results: {}", search_results.size());
 
-    response = TRY(client->status("INBOX"sv, { IMAP::StatusItemType::Recent, IMAP::StatusItemType::Messages })->await()).release_value();
+    response = TRY(client->status("INBOX"sv, { IMAP::StatusItemType::Recent, IMAP::StatusItemType::Messages })->await());
     outln("[STATUS] Recent items: {}", response.data().status_item().get(IMAP::StatusItemType::Recent));
 
     for (auto item : search_results) {
@@ -118,7 +118,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         };
         // clang-format on
 
-        auto fetch_response = TRY(client->fetch(fetch_command, false)->await()).release_value();
+        auto fetch_response = TRY(client->fetch(fetch_command, false)->await());
         outln("[FETCH] Subject of search result: {}",
             fetch_response.data()
                 .fetch_data()
@@ -136,22 +136,22 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     // FIXME: There is a discrepancy between IMAP::Sequence wanting signed ints
     //        and IMAP search results returning unsigned ones. Find which one is
     //        more correct and fix this.
-    response = TRY(client->store(IMAP::StoreMethod::Add, { static_cast<int>(added_message), static_cast<int>(added_message) }, false, { "\\Deleted" }, false)->await()).release_value();
+    response = TRY(client->store(IMAP::StoreMethod::Add, { static_cast<int>(added_message), static_cast<int>(added_message) }, false, { "\\Deleted" }, false)->await());
     outln("[STORE] Store response: {}", response.response_text());
 
-    response = move(TRY(client->send_simple_command(IMAP::CommandType::Expunge)->await()).release_value().get<IMAP::SolidResponse>());
+    response = move(TRY(client->send_simple_command(IMAP::CommandType::Expunge)->await()).get<IMAP::SolidResponse>());
     outln("[EXPUNGE] Number of expunged entries: {}", response.data().expunged().size());
 
     if (idle_supported) {
-        VERIFY(TRY(client->idle()->await()).has_value());
+        VERIFY(!client->idle()->await().is_error());
         sleep(3);
-        response = TRY(client->finish_idle()->await()).release_value();
+        response = TRY(client->finish_idle()->await());
         outln("[IDLE] Idle response: {}", response.response_text());
     } else {
         outln("[IDLE] Skipped. No IDLE support.");
     }
 
-    response = move(TRY(client->send_simple_command(IMAP::CommandType::Logout)->await()).release_value().get<IMAP::SolidResponse>());
+    response = move(TRY(client->send_simple_command(IMAP::CommandType::Logout)->await()).get<IMAP::SolidResponse>());
     outln("[LOGOUT] Bye: {}", response.data().bye_message().value());
 
     client->close();