#![doc(html_root_url = "https://azasypkin.github.io/rust-cast/")]
extern crate byteorder;
#[macro_use]
extern crate log;
extern crate openssl;
extern crate protobuf;
extern crate serde;
#[macro_use]
extern crate serde_derive;
extern crate serde_json;
mod cast;
mod utils;
pub mod errors;
pub mod message_manager;
pub mod channels;
use std::borrow::Cow;
use std::net::TcpStream;
use std::rc::Rc;
use openssl::ssl::{SslConnector, SslMethod, SslStream, SslVerifyMode};
use channels::heartbeat::{HeartbeatChannel, HeartbeatResponse};
use channels::connection::{ConnectionChannel, ConnectionResponse};
use channels::receiver::{ReceiverChannel, ReceiverResponse};
use channels::media::{MediaChannel, MediaResponse};
use errors::Error;
use message_manager::{CastMessage, MessageManager};
const DEFAULT_SENDER_ID: &str = "sender-0";
const DEFAULT_RECEIVER_ID: &str = "receiver-0";
pub enum ChannelMessage {
Connection(ConnectionResponse),
Heartbeat(HeartbeatResponse),
Media(MediaResponse),
Receiver(ReceiverResponse),
Raw(CastMessage),
}
pub struct CastDevice<'a> {
message_manager: Rc<MessageManager<SslStream<TcpStream>>>,
pub connection: ConnectionChannel<'a, SslStream<TcpStream>>,
pub heartbeat: HeartbeatChannel<'a, SslStream<TcpStream>>,
pub media: MediaChannel<'a, SslStream<TcpStream>>,
pub receiver: ReceiverChannel<'a, SslStream<TcpStream>>,
}
impl<'a> CastDevice<'a> {
pub fn connect<S>(host: S, port: u16) -> Result<CastDevice<'a>, Error>
where
S: Into<Cow<'a, str>>,
{
let host = host.into();
debug!(
"Establishing connection with cast device at {}:{}...",
host, port
);
let connector = SslConnector::builder(SslMethod::tls())?.build();
let tcp_stream = TcpStream::connect((host.as_ref(), port))?;
CastDevice::connect_to_device(connector.connect(host.as_ref(), tcp_stream)?)
}
pub fn connect_without_host_verification<S>(host: S, port: u16) -> Result<CastDevice<'a>, Error>
where
S: Into<Cow<'a, str>>,
{
let host = host.into();
debug!(
"Establishing non-verified connection with cast device at {}:{}...",
host, port
);
let mut builder = SslConnector::builder(SslMethod::tls())?;
builder.set_verify(SslVerifyMode::NONE);
let connector = builder.build();
let tcp_stream = TcpStream::connect((host.as_ref(), port))?;
debug!(
"Connection with {}:{} successfully established.",
host, port
);
CastDevice::connect_to_device(connector.connect(host.as_ref(), tcp_stream)?)
}
pub fn receive(&self) -> Result<ChannelMessage, Error> {
let cast_message = self.message_manager.receive()?;
if self.connection.can_handle(&cast_message) {
return Ok(ChannelMessage::Connection(self.connection.parse(&cast_message)?));
}
if self.heartbeat.can_handle(&cast_message) {
return Ok(ChannelMessage::Heartbeat(self.heartbeat.parse(&cast_message)?));
}
if self.media.can_handle(&cast_message) {
return Ok(ChannelMessage::Media(self.media.parse(&cast_message)?));
}
if self.receiver.can_handle(&cast_message) {
return Ok(ChannelMessage::Receiver(self.receiver.parse(&cast_message)?));
}
Ok(ChannelMessage::Raw(cast_message))
}
fn connect_to_device(ssl_stream: SslStream<TcpStream>) -> Result<CastDevice<'a>, Error> {
let message_manager_rc = Rc::new(MessageManager::new(ssl_stream));
let heartbeat = HeartbeatChannel::new(
DEFAULT_SENDER_ID,
DEFAULT_RECEIVER_ID,
Rc::clone(&message_manager_rc),
);
let connection = ConnectionChannel::new(DEFAULT_SENDER_ID, Rc::clone(&message_manager_rc));
let receiver = ReceiverChannel::new(
DEFAULT_SENDER_ID,
DEFAULT_RECEIVER_ID,
Rc::clone(&message_manager_rc),
);
let media = MediaChannel::new(DEFAULT_SENDER_ID, Rc::clone(&message_manager_rc));
Ok(CastDevice {
message_manager: message_manager_rc,
heartbeat: heartbeat,
connection: connection,
receiver: receiver,
media: media,
})
}
}