protected void OpenCallback(string projectToken, Gs2Exception e)
{
if (projectToken == null && e == null)
{
// 応答からプロジェクトトークンが取得できなかった場合
// そのまま Idle 状態に遷移するので、 Open 失敗の後始末が必要な場合は派生クラスで対応が必要
e = new UnknownException("No project token returned.");
}
using (var scopedLock = new NonreentrantLock.ScopedLock(_lock))
{
if (e == null)
{
ProjectToken = projectToken;
_state = State.Available;
CompleteOpenTasks(new AsyncResult <OpenResult>(new OpenResult(), null));
}
else
{
// キャンセルがかけられていれば、実際の失敗の内容が何であれ、キャンセルによる失敗として扱う
if (_state == State.CancellingOpen)
{
e = new SessionNotOpenException("Cancelled.");
}
_state = State.Idle;
// TODO: Open と Close のコールバックの順番の保証
CompleteOpenTasks(new AsyncResult <OpenResult>(null, e));
CompleteCloseTasks();
}
}
}
private WebSocket CreateWebSocket()
{
var url = EndpointHost.Replace("{region}", Region.DisplayName());
var webSocket = new WebSocket(url)
{
SslConfiguration = { EnabledSslProtocols = SslProtocols.Tls12, CheckCertificateRevocation = _checkCertificateRevocation }
};
webSocket.OnOpen += (sender, eventArgs) =>
{
_state = State.LoggingIn;
webSocket.SendAsync(
"{" +
$"\"client_id\": \"{Credential.ClientId}\"," +
$"\"client_secret\": \"{Credential.ClientSecret}\"," +
"\"x_gs2\": {" +
"\"service\": \"identifier\"," +
"\"component\": \"projectToken\"," +
"\"function\": \"login\"," +
"\"contentType\": \"application/json\"," +
$"\"requestId\": \"{Gs2SessionTaskId.LoginId.ToString()}\"" +
"}" +
"}",
null
);
};
webSocket.OnMessage += (sender, messageEventArgs) =>
{
if (messageEventArgs.IsText)
{
var gs2WebSocketResponse = new Gs2WebSocketResponse(messageEventArgs.Data);
switch (_state)
{
case State.LoggingIn:
if (gs2WebSocketResponse.Gs2SessionTaskId == Gs2SessionTaskId.LoginId)
{
if (gs2WebSocketResponse.Error == null)
{
LoginResult loginResult = LoginResult.FromDict(gs2WebSocketResponse.Body);
if (loginResult.access_token != null)
{
_state = State.Available;
OpenCallback(loginResult.access_token, null);
}
else
{
_lastGs2Exception = new UnknownException("No project token returned.");
_state = State.LoginFailed;
webSocket.CloseAsync();
}
}
else
{
_lastGs2Exception = gs2WebSocketResponse.Error;
_state = State.LoginFailed;
webSocket.CloseAsync();
}
}
break;
case State.Available:
if (gs2WebSocketResponse.Gs2SessionTaskId == Gs2SessionTaskId.InvalidId)
{
// API 応答以外のメッセージ
OnNotificationMessage?.Invoke(
NotificationMessage.FromDict(gs2WebSocketResponse.Body)
);
}
else
{
OnMessage(gs2WebSocketResponse.Gs2SessionTaskId, gs2WebSocketResponse);
}
break;
case State.Idle:
case State.Opening:
case State.LoginFailed:
break;
}
}
};
webSocket.OnClose += (sender, closeEventArgs) =>
{
var state = _state;
_state = State.Idle;
switch (state)
{
case State.Idle:
// 来ない
break;
case State.Opening: // TODO: OnError を通ってからくるか確認
case State.LoggingIn:
case State.LoginFailed:
// Gs2Session としては Available になっていないので closeCallback ではなく openCallback に失敗を伝える
OpenCallback(null, _lastGs2Exception);
break;
case State.Available:
// 自発的な切断も外部要因による切断もここ
CloseCallback(); // TODO: Cancel にわたすエラーを引数に取る
break;
}
};
webSocket.OnError += (sender, errorEventArgs) =>
{
var gs2Exception = new SessionNotOpenException("Session no longer open.");
switch (_state)
{
case State.Idle:
// 来ない
break;
case State.Opening:
// この直後に OnClose が呼ばれる
_lastGs2Exception = gs2Exception;
break;
case State.LoggingIn:
_lastGs2Exception = gs2Exception;
_state = State.LoginFailed;
webSocket.CloseAsync();
break;
case State.LoginFailed:
// 来ないはず
break;
case State.Available:
// 実行中のタスクのどれが失敗したのかわからないので、全部失敗にする
// TODO
break;
}
};
return(webSocket);
}
