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  1. PROFINET IO-Device V5
  2. PSPNSV5-583

Packet Socket API may reject SendTo service for TCP socket unexpectedly

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: V5.4.0.0, V5.5.0.0, V5.6.0.0
    • Fix Version/s: V5.4.0.11, V5.5.0.7, V5.6.0.1, V5.6.1.0
    • Labels:
      None
    • Account:
      SPC Profinet Slave (SPCPROFINE)

      Description

      When the firmware was configured via taglist to support more than 4 DPM packet services for Socket API, the firmware might reject a SendTo request for a TCP socket with status code ERR_HIL_OUTOFMEMORY or ERR_SOCK_SOULDBLOCK. The data is not sent to the communication peer. This happens when more than 4 SendTo services are active on the same socket and not yet confirmed by the firmware.

      Workaround: Make sure that the application does not request more than 4 SentTo services in parallel for the same socket. There should be no more than 4 pending, unconfirmed SendTo services per TCP socket.

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                  • Reporter:
                    AMesser Andreas Messer
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                    • Created:
                      Updated:
                      Resolved: