c_ares

Struct ServerFailoverOptions

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pub struct ServerFailoverOptions { /* private fields */ }
Expand description

Server failover options.

When a DNS server fails to respond to a query, c-ares will deprioritize the server. On subsequent queries, servers with fewer consecutive failures will be selected in preference. However, in order to detect when such a server has recovered, c-ares will occasionally retry failed servers. ServerFailoverOptions contains options to control this behaviour.

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impl ServerFailoverOptions

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pub fn new() -> Self

Returns a new ServerFailoverOptions.

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pub fn set_retry_chance(&mut self, retry_chance: u16) -> &mut Self

The retry_chance sets the probability (1/N) of retrying a failed server on any given query. Setting to a value of 0 disables retries.

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pub fn set_retry_delay(&mut self, retry_delay: usize) -> &mut Self

The retry_delay sets the minimum delay in milliseconds that c-ares will wait before retrying a specific failed server.

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impl Default for ServerFailoverOptions

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fn default() -> Self

Returns the “default value” for a type. Read more

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