Squid configuration directive happy_eyeballs_connect_gap

Squid configuration directive happy_eyeballs_connect_gap

Available in: v7   v6   v5

This directive is not available in the v8 version of Squid.

For older versions than v5 see the linked pages above

Configuration Details:
Option Name: happy_eyeballs_connect_gap
Replaces:
Requires:
Default Value: no artificial delays between spare attempts
Suggested Config:
This Happy Eyeballs (RFC 8305) tuning directive specifies the minimum delay between opening spare to-server connections (to any server; i.e. across all concurrent master transactions in a Squid instance). Each SMP worker currently multiplies the configured gap by the total number of workers so that the combined spare connection opening rate of a Squid instance obeys the configured limit. The workers do not coordinate connection openings yet; a micro burst of spare connection openings may violate the configured gap. This directive has similar trade-offs as happy_eyeballs_connect_timeout, but its focus is on limiting traffic amplification effects for Squid as a whole, while happy_eyeballs_connect_timeout works on an individual master transaction level. The following Happy Eyeballs directives place additional connection opening restrictions: happy_eyeballs_connect_timeout and happy_eyeballs_connect_limit. See the former for related terminology.

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