wamp 0.1.0

Documentation 
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use super::{ConnectionHandler, ConnectionState, WAMP_JSON, WAMP_MSGPACK};

use router::messaging::send_message;
use ws::{Error as WSError, ErrorKind as WSErrorKind, Result as WSResult, Request, Response, CloseCode};

use messages::{Message, URI, HelloDetails, WelcomeDetails, RouterRoles, ErrorDetails, Reason};
use ::{WampResult, Error, ErrorKind};

impl ConnectionHandler {
    pub fn handle_hello(&mut self, realm: URI, _details: HelloDetails) -> WampResult<()> {
        debug!("Responding to hello message (realm: {:?})", realm);
        let id = {
            let mut info = self.info.lock().unwrap();
            info.state = ConnectionState::Connected;
            info.id
        };

        try!(self.set_realm(realm.uri));
        send_message(&self.info, &Message::Welcome(id, WelcomeDetails::new(RouterRoles::new())))
    }

    pub fn handle_goodbye(&mut self, _details: ErrorDetails, reason: Reason) -> WampResult<()> {
        let state = self.info.lock().unwrap().state.clone();
        match  state {
            ConnectionState::Initializing => {
                // TODO check specification for how this ought to work.
                Err(Error::new(ErrorKind::InvalidState("Recieved a goodbye message before handshake complete")))
            },
            ConnectionState::Connected => {
                info!("Recieved goobye message with reason: {:?}", reason);
                self.remove();
                send_message(&self.info, &Message::Goodbye(ErrorDetails::new(), Reason::GoodbyeAndOut)).ok();
                let mut info = self.info.lock().unwrap();
                info.state = ConnectionState::Disconnected;
                match info.sender.close(CloseCode::Normal) {
                    Err(e) => Err(Error::new(ErrorKind::WSError(e))),
                    _ => Ok(())
                }
            },
            ConnectionState::ShuttingDown => {
                info!("Recieved goobye message in response to our goodbye message with reason: {:?}", reason);
                let mut info = self.info.lock().unwrap();
                info.state = ConnectionState::Disconnected;
                match info.sender.close(CloseCode::Normal) {
                    Err(e) => Err(Error::new(ErrorKind::WSError(e))),
                    _ => Ok(())
                }
            },
            ConnectionState::Disconnected => {
                warn!("Recieved goodbye message after closing connection");
                Ok(())
            }
        }
    }


    fn set_realm(&mut self, realm: String) -> WampResult<()> {
        debug!("Setting realm to {}", realm);
        let realm = self.router.realms.lock().unwrap()[&realm].clone();
        {
            realm.lock().unwrap().connections.push(self.info.clone());
        }
        self.realm = Some(realm);
        Ok(())
    }

    pub fn process_protocol(&mut self, request: &Request, response: &mut Response) -> WSResult<()> {
        debug!("Checking protocol");
        let protocols = try!(request.protocols());
        for protocol in protocols {
            if protocol == WAMP_JSON || protocol == WAMP_MSGPACK {
                response.set_protocol(protocol);
                let mut info = self.info.lock().unwrap();
                info.protocol = protocol.to_string();
                return Ok(())
            }
        }
        Err(WSError::new(WSErrorKind::Protocol, format!("Neither {} nor {} were selected as Websocket sub-protocols", WAMP_JSON, WAMP_MSGPACK)))
    }


}