mennovf commented on PR #17358: URL: https://github.com/apache/nuttx/pull/17358#issuecomment-3586794957
> @mennovf with your change how to handle the case described by @zhhyu7 : > > If the sending direction is unthrottled, during the TCP sending process, if the buffer in the write queue is full of IOB, the driver will be unable to receive any new packet (especially TCP-ACK), and the buffer in the write queue will never be released, causing the entire IP protocol stack to hang. This is a fatal problem. Yes, the TCP sending will be blocked. Note that this is already an issue if _IOB_THROTTLE=0, regardless whether sending or receiving is throttled. As I said, this is a more fundamental issue with the current networking stack. Ideally each socket's send & receive end should allocate some minimum amount of memory on creation that's used to ensure forward progress. @fdcavalcanti I can't reproduce it. What relevant options are you using? I did run into another bug using iperf where the UDP socket doesn't seem to get cleaned up propertly on ctr-c. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
