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Several second delay between nx_tcp_socket_disconnect and disconnect complete callback

Michael Fowler 131 Reputation points
2023-08-23T00:17:08.4266667+00:00

Hello,

I want to drop all open TCP connections if the network link goes down. In the link status change callback I call nx_tcp_socket_disconnect. Several seconds later, the disconnect complete callback is called. I'm wondering what causes that delay and if there is a better way to approach this. Thanks.

Azure RTOS
Azure RTOS
An Azure embedded development suite including a small but powerful operating system for resource-constrained devices.
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  1. Tiejun Zhou 1,126 Reputation points Microsoft Employee
    2023-08-24T01:58:40.42+00:00

    There should be no delay to invoke nx_tcp_socket_disconnect in link status change callback. One possible reason is that network driver blocks sending the FIN packet.

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