TCP is harder than it looks

In theory it's quite easy to write software that deals with TCP at the packet level, whether it's a full TCP stack or just a packet handling application that needs to be TCP-aware. The main RFCs aren't horribly long or complicated, and specify things in great detail. And while new extensions appear regularly, the option negotiation during the initial handshake ensures that you can pick and choose

[tmatsuu]

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