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//! # Stomp lib
//!
//! ## Usage
//! Creating a client:
//! ```no_run
//! use stomp_rs::client::{Client, ClientBuilder};
//! use tokio::net::TcpStream;
//! use tokio::sync::mpsc::channel;
//! use std::error::Error;
//!
//! async fn connect() -> Result<Client, Box<dyn Error>> {
//! Client::connect(
//! ClientBuilder::new("127.0.0.1:61613")
//! ).await
//! }
//! ```
//!
//! Emitting a new frame:
//!
//! ```no_run
//! use stomp_rs::protocol::frame::Send;
//! use stomp_rs::client::Client;
//! use std::error::Error;;
//!
//! async fn send_example(client: &Client) -> Result<(), Box<dyn Error>> {
//! client.send(
//! Send::new("/topic/test")
//! .body("test-message")
//! ).await
//! }
//! ```
//!
//! Subscribe:
//! ```no_run
//! use stomp_rs::client::Client;
//! use stomp_rs::protocol::frame::Subscribe;
//! use tokio::sync::mpsc::{channel, Sender, Receiver};
//! use std::error::Error;
//! use stomp_rs::protocol::{Frame, ServerCommand};
//! use std::future::Future;
//! use std::sync::Arc;
//!
//! async fn subscribe_example(client: Arc<Client>)-> Result<(), Box<dyn Error>> {
//! let (sender, mut receiver): (Sender<Frame<ServerCommand>>, Receiver<Frame<ServerCommand>>) = channel(16);
//!
//! let subscriber_client = Arc::clone(&client);
//! tokio::spawn(async move {
//! match receiver.recv().await {
//! Some(frame) => {
//! /* process frame */
//!
//! // Send ack to server
//! subscriber_client.ack(frame.ack().unwrap())
//! .await;
//! }
//! None => { }
//! }
//! });
//!
//! client.subscribe(
//! Subscribe::new_with_random_id("/topic/test"),
//! sender
//! ).await
//! }