IT Hare on Soft.ware
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Network programming is one field which everybody uses but very few people really know in depth. Our IT Hare did write a software which processes billions of network packets per day; moreover, they’ve done it in a very robust and efficient manner. And last but not least, they’re ready to share their experience :-)

Network Programming, page 4:

If they wrote it in a book, it MUST BE GOOD CODE!
Or
How many mistakes can fit into 100 lines of book tutorial code. Part 1

posted by

Quote: “Throwing away 1400 bytes for no reason for every single network message is an outrageous waste”
Another Quote: “Having this kind of stuff in your code is like having a time bomb: it will explode, and for any sizeable project if will usually happen sooner rather than later (unless, of course, “later” is the worst possible time for the explosion to happen)”
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Part VIIb: Security (concluded) of 64 Network DO’s and DON’Ts for Multi-Player Game Developers

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Quote: “What is practically very important – is to keep all the “unsanitized” data in one place.”
Another Quote: “What will happen if attacker got the whole database of your users’ passwords?”
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Part VIIa: Security (TLS/SSL) of 64 Network DO’s and DON’Ts for Multi-Player Game Developers

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Quote: “Design of secure protocols is a thing which even security professionals have lots of problems with.”
Another Quote: “In the security field, if you can disable something unused – you SHOULD do it”
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Part VI: TCP of 64 Network DO’s and DON’Ts for Multi-Player Game Developers

posted by

Quote: “In addition, if TCP_NODELAY is set, it MIGHT help to mitigate consequences of exponential backoff algorithm in case of lost packets.”
Another Quote: “All of us are seeing ‘hung’ HTTP connections on a regular basis – that is, when we’ve clicked a link, and the page loading is stuck forever.”
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Part V: UDP of 64 Network DO’s and DON’Ts for Game Engines

posted by

Quote: “In general, lag and jitter are not specific to UDP, and manifest themselves for absolutely any Internet connection.”
Another Quote: “If you need a globally-reachable server with single-digit-ms lag for all the players, it is simply not possible”
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Part IV: Great TCP-vs-UDP Debate of 64 Network DO’s and DONT’s for Game Engines

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Quote: ““Why bother with UDP at all? The answer is simple: there is a price tag attached to the TCP goodies.”
Another Quote: ““Implementing your own reliable-delivery protocol over UDP is extremely complicated, time-consuming, and error-prone.”
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Part IIIb: Server-Side (deployment, optimizations, and testing) of 64 Network DO’s and DONT’s for Game Engines

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Quote: “If your game is the only one working when all the competition is down, it improves user perception about your app a lot.”
Another Quote: “Most importantly, however, this approach allows to keep your players happy – and this is one thing which really matters”
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