Struct domain::resolv::stub::conf::ResolvConf

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pub struct ResolvConf {
    pub servers: Vec<ServerConf>,
    pub options: ResolvOptions,
}
Expand description

Resolver configuration.

This type collects all information necessary to configure how a stub resolver talks to its upstream resolvers.

The type follows the builder pattern. After creating a value with ResolvConf::new() you can manipulate the members. Once you are happy with them, you call finalize() to make sure the configuration is valid. It mostly just fixes the servers.

Additionally, the type can parse a glibc-style configuration file, commonly known as /etc/resolv.conf through the parse() and parse_file() methods. You still need to call finalize() after parsing.

The easiest way, however, to get the system resolver configuration is through ResolvConf::system_default(). This will parse the configuration file or return a default configuration if that fails.

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§servers: Vec<ServerConf>

Addresses of servers to query.

§options: ResolvOptions

Default options.

Implementations§

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impl ResolvConf

§Management

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pub fn new() -> Self

Creates a new, empty configuration.

Using an empty configuration will fail since it does not contain any name servers. Call self.finalize() to make it usable.

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pub fn finalize(&mut self)

Finalizes the configuration for actual use.

The function does two things. If servers is empty, it adds 127.0.0.1:53. This is exactly what glibc does. If search is empty, it adds the root domain ".". This differs from what glibc does which considers the machine’s host name.

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impl ResolvConf

§Parsing Configuration File

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pub fn parse_file<P: AsRef<Path>>(&mut self, path: P) -> Result<(), Error>

Parses the configuration from a file.

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pub fn parse<R: Read>(&mut self, reader: &mut R) -> Result<(), Error>

Parses the configuration from a reader.

The format is that of the /etc/resolv.conf file.

Trait Implementations§

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impl Clone for ResolvConf

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fn clone(&self) -> ResolvConf

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ResolvConf

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for ResolvConf

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fn default() -> Self

Creates a default configuration for this system.

XXX This currently only works for Unix-y systems.

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impl Display for ResolvConf

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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