tendermint 0.10.1

Tendermint is a high-performance blockchain consensus engine that powers Byzantine fault tolerant applications written in any programming language. This crate provides core types for representing information about Tendermint blockchain networks, including chain information types, secret connections, and remote procedure calls (JSONRPC).
Documentation 
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//! JSONRPC IDs

use rand_os::{rand_core::RngCore, OsRng};
use serde::{Deserialize, Serialize};

/// JSONRPC ID: request-specific identifier
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub struct Id(String);

impl Id {
    /// Create a JSONRPC ID containing a UUID v4 (i.e. random)
    pub fn uuid_v4() -> Self {
        let mut rng = OsRng::new().unwrap();
        let mut bytes = [0; 16];
        rng.fill_bytes(&mut bytes);

        let uuid = uuid::Builder::from_bytes(bytes)
            .set_variant(uuid::Variant::RFC4122)
            .set_version(uuid::Version::Random)
            .build();

        Id(uuid.to_string())
    }
}

impl AsRef<str> for Id {
    fn as_ref(&self) -> &str {
        self.0.as_ref()
    }
}