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Is it normal to have HTTP 499 errors in 1 out of 4000 requests?
hyperknot asked: I made a website, behind CloudFlare, and sometimes I get an early terminated (nginx 499) request, which is really hard to work around in the codebase. This happens in about 1 out of...
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How does TCP offload NIC cause the TCP checksum to be invalid?
Mindaugas Bernatavičius asked: A tcpdump pcap exported and being investigated on another machine with wireshark is showing a lot of invalid TCP checksum messages. This is a known and documented...
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Linux set min_rto on IPv6 device
user3870920 asked: I came across https://unix.stackexchange.com/questions/210367/changing-the-tcp-rto-value-in-linux which pretty much does exactly what I want, but I need to do it with an IPv6...
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Is there a TCP Maximum Segment Size (MSS) Minimum?
Michael Uray asked: I have there a OpenVPN VPN network connection, where the MSS size 60 gets send out for some reason (don’t know why yet). EDIT: Reason: OpenVPN mssfix was mistakenly set to 1 36...
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Who listens to the port
hedgehogues asked: I have a conflict between the mail server and one more service. netstat -ltnp | grep -w ': 25' Conclusion: (Not all processes could be identified, non-owned process info will not...
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splitting tcp traffic to multiple recipients on the backend?
Kevin Martin asked: let’s assume that i have a domain name of kevin.com and I have multiple servers that sit behind nginx. Load balancing http traffic is easy with nginx but can I split traffic...
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Can I determine a EWOULDBLOCK/EAGAIN situation from a pcap/tcpdump
PasanW asked: Is there a way I can determine if a certain message resulted in an EWOULDBLOCK/EAGAIN return code to the server which sent the packet? The server was sending messages to the client At...
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URL redirection and TCP proxy in haproxy
Albert asked: In a server with only one ipv4 and running haproxy, i want to redirect an url and proxy another in TCP level, for ssl passthrough purpose. frontend https-frontend bind *:443 mode tcp...
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