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Marek Majkowski

Marek Majkowski

The day my ping took countermeasures



Ping developers clearly put some thought into that. I wondered how far they went. Did they handle clock changes in both directions? Are the bad measurements excluded from the final statistics? How do they test the software?...

When TCP sockets refuse to die


SYNTCPSpectrumTech Talks

We noticed something weird - the TCP sockets which we thought should have been closed - were lingering around. We realized we don't really understand when TCP sockets are supposed to time out! We naively thought enabling TCP keepalives would be enough... but it isn't!...