Article - CS332764

ThingWorx Connection Server and ThingWorx EMS and Edge C SDK Issue Tech Note

Modified: 02-May-2024   


Applies To

  • ThingWorx Connection Server 9.0
  • ThingWorx Platform 8.5 to 9.5
  • ThingWorx Edge MicroServer 5.4
  • ThingWorx Edge SDK 6.2.0
  • ThingWorx Edge SDK 7.0.0.0
  • ThingWorx Edge SDK 3.0
  • C SDK v.2.1.1 and earlier

Description

  • Transfer of large files (~32MB) to connected Edge devices fails with time out error when using connection servers
    • Error message in WSMES log (wsems_log.log)
TW_SDK--ERROR twWs_Receive: Incoming frame is too large to receive.  Size: 8194, Max Frame Size: 8192
  • WebSocket frame contains data that cannot be compressed for connection server 
  • Transfer was successful prior to implementing connection servers
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