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Gliffy Diagram
nameMDP3 TCP Message


Client systems should queue real-time data until all missed data is recovered. The recovered data should then be applied prior to queued data.


  • TCP Replay is not a performance-based recovery option and should only be used if other options are unavailable.
  • TCP requests and responses are via TCP.
  • Resend request messages and other customer-generated messages (i.e. heartbeat) are in plain text FIX format, CME Globex-generated response messages are SBE encoded.
  • There is a 24 hour time limit on the messages available via the TCP replay functionality.
  • The maximum number of packets that can be requested in one resend request message is 2000.