pub fn new(server_name: &str) -> Result<Self, Error> {
        let user_id = format!("@{}:{}", generate_localpart(12).to_lowercase(), server_name);
        let (localpart, host, port) = parse_id('@', &user_id)?;

        Ok(UserId {
            hostname: host,
            localpart: localpart.to_string(),
            port: port,
        })
    }
/// Attempts to generate a `UserId` for the given origin server with a localpart consisting of
/// 12 random ASCII characters.
///
/// Fails if the given origin server name cannot be parsed as a valid host.
Attempts to generate a `UserId` for the given origin server with a localpart consisting of
12 random ASCII characters.

Fails if the given origin server name cannot be parsed as a valid host.
Attempts to generate a ` UserId ` for the given origin server with a localpart consisting of 12 random ASCII characters . Fails if the given origin server name cannot be parsed as a valid host .
pub fn new(server_name: &str) -> Result<Self, Error> {
        let user_id = format!("@{}:{}", generate_localpart(12).to_lowercase(), server_name);
        let (localpart, host, port) = parse_id('@', &user_id)?;
        Ok(UserId {
            hostname: host,
            localpart: localpart.to_string(),
            port: port,
        })
    }
pub fn new ( server_name : & str ) -> Result < Self , Error > { let user_id = format ! ( " " generate_localpart ( 12 ) to_lowercase ( ) server_name ) ; let ( localpart , host , port ) = parse_id ( '@' , & user_id ) ? ; Ok ( UserId { hostname : host , localpart : localpart . to_string ( ) , port : port , } ) }
Attempts to generate a `UserId` for the given origin server with a localpart consisting of
12 random ASCII characters.
Attempts to generate a ` UserId ` for the given origin server with a localpart consisting of 12 random ASCII characters .
server_name
&str