happy

February 19th, 2017

happy is a simple TCP happy eyeballs probing tool. It uses non‐blocking connect(…) calls to concurrently establish connections to a number of possible endpoints. This tool is particularly useful to determine whether applications implementing the happy eyeball algorithm [RFC 6555] will use IPv4 or IPv6 if both are available.

Download: https://github.com/vbajpai/happy

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