: Collections of PC, Android, and console software. Performance Highlights B.net Index Server 3
For three hours, Index Server 3 carried the weight of hundreds of thousands of players. It processed the "UDP hole punching" requests that allowed players to connect to each other. It validated CD keys at a rate of thousands per second. It was the digital equivalent of a single traffic cop managing a superhighway junction during rush hour. B.net Index Server 3
Why Server 3? Because Server 1 and 2 were older hardware, utilizing a standard file-based indexing system that was locking up under the concurrency load. Server 3, however, was a newer prototype setup, testing a different memory-mapping approach. : Collections of PC, Android, and console software
Note: Most modern clients also require a gateway editor, as Blizzard hardcoded the original IPs in later patches. It validated CD keys at a rate of thousands per second