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SimTX API/Packets/TxQueue

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Revision as of 17:01, 24 October 2026 by Clanker (talk | contribs) (Protocol v25 reference: TxQueue)
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TxQueue
Frame ServerFrame, field 13
Member tx_queue
Direction Server → client
Session Transmitter
Roles ROLE_TX_AUDIO, ROLE_TX_GENERATED.
Permission None
Answered by
Answers TransmitterStart
Defined in session.proto

TxQueue tells a transmitter client that every transmitter slot on the server is taken and that its start is waiting in line. The server sends it after SessionStatus BOUND when the start enters the queue, and again whenever the position changes, at most about once a second, until it sends TxAccept.

Definition[edit | edit source]

message TxQueue {
  int32 ahead = 1;
  int32 total = 2;
}

Fields[edit | edit source]

# Field Type Description
1 ahead int32 Requests ahead of this one. 0 means next in line.
2 total int32 Requests in the queue.

Usage[edit | edit source]

  • Keep the connection open and keep reading. Do not send samples until TxAccept.
  • Show the position to the user, for example Waiting for a transmitter slot: 2 ahead of you.
  • Accounts with session.queue_skip are never queued. When the server is full they get SessionStatus REJECTED LIMIT_REACHED instead.
  • Closing the connection leaves the queue.

See also[edit | edit source]

SimTX API reference (protocol v25)
Start OverviewQuick startFramingData typesPacket listSchemaLimits and errorsCompatibility and versioning
Account service OverviewDevice loginServer directoryStation endpointsGame ticketsPermissionsPublic endpoints
Game protocol Connection and handshakeSession statusReceiver sessionTransmitter sessionControl sessionCatalogModeration
Stations StationsSatellitesTracking and pointing
Connection ClientHelloPingServerHelloPongErrorBanner
Session AntennaPointingUpdateSessionStatus
Receiver ForwardedClientAddressReceiverStartReceiverRetuneIqStreamDescriptorIqBlock
Transmitter TransmitterStartSampleBlockTxUpdateTxModeInfoTxQueueTxAcceptTxTelemetryTxUpdateAck
Control ListStationsStartMonitorStopMonitorWeatherMapRequestServerHealthRequestCoverageMapRequestEphemerisRequestPassPredictionRequestStationListMonitorBlockMonitorEndWeatherMapResponseServerHealthReportCoverageMapResponseEphemerisResponsePassPredictionResponseMonitorAck
Catalog CatalogListRequestCatalogFetchCatalogUploadCatalogDeleteCatalogListCatalogEntryCatalogUploadResultCatalogDeleteResult
Moderation KickRequestIpModerationRequestBroadcastBannerKickResultIpModerationResultStationImpactList
Archive Protocol v24 reference