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I am running an RPC node and using the quic client to send transactions on the same machine. The node will run for a few hours, with many successful transactions sent via quic and then crash with the following error.

thread 'sol-warm-quic-service' panicked at 'QuicLazyInitializedEndpoint::create_endpoint bind_in_range: Custom { kind: Other, error: "No available UDP ports in (8000, 10000)" }', client/>

In the comments in this post the solution provided is to modify the VALIDATOR_PORT_RANGE to (8000, 60000) in the quic no blocking file. I have done this and am still encountering the same issue. How can I better specify who is using which ports?

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  • Very strange... Maybe you can see how all of those ports are being used with something like ss -tulpn?
    – Jon C
    Jan 30, 2023 at 15:19
  • Hi Jon. I ran ss - tulpn, I am getting validator process, and transaction sender process in port range between 8000, 10000. I am also seeing validator process and transaction sender process in ports > 10000. I assume this is unexpected as only the transaction sender process should be > 10000? Further context - I didn't modify any validator code, only the solana_client crate which is imported into the transaction sender bot.
    – guccimane
    Jan 31, 2023 at 23:26
  • This may be a silly suggestion, but how about keeping the validator to (8000, 10000), and changing your client to (10001, 60000)?
    – Jon C
    Feb 1, 2023 at 12:05
  • Ok I think this might be working. Thanks for your help
    – guccimane
    Feb 4, 2023 at 12:55

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