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Handle the transient TCP connect() failures on FreeBSD

Ondřej Surý requested to merge 3451-handle-transient-TCP-connect-EADDRINUSE-on-BSDs into main

On FreeBSD (and perhaps other *BSD) systems, the TCP connect() call (via uv_tcp_connect()) can fail with transient UV_EADDRINUSE error. The UDP code already handles this by trying three times (is a charm) before giving up. Add a code for the TCP, TCPDNS and TLSDNS layers to also try three times before giving up by calling uv_tcp_connect() from the callback two more time on UV_EADDRINUSE error.

Closes #3451 (closed), #3452 (closed)

Edited by Ondřej Surý

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