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use flate2::read::ZlibDecoder;
use gateway::GatewayError;
use internal::prelude::*;
use serde_json;
use websocket::{
message::OwnedMessage,
sync::stream::{TcpStream, TlsStream},
sync::Client as WsClient
};
pub trait ReceiverExt {
fn recv_json(&mut self) -> Result<Option<Value>>;
}
pub trait SenderExt {
fn send_json(&mut self, value: &Value) -> Result<()>;
}
impl ReceiverExt for WsClient<TlsStream<TcpStream>> {
fn recv_json(&mut self) -> Result<Option<Value>> {
Ok(match self.recv_message()? {
OwnedMessage::Binary(bytes) => {
serde_json::from_reader(ZlibDecoder::new(&bytes[..]))
.map(Some)
.map_err(|why| {
warn!("Err deserializing bytes: {:?}; bytes: {:?}", why, bytes);
why
})?
},
OwnedMessage::Close(data) => return Err(Error::Gateway(GatewayError::Closed(data))),
OwnedMessage::Text(payload) => {
serde_json::from_str(&payload).map(Some).map_err(|why| {
warn!(
"Err deserializing text: {:?}; text: {}",
why,
payload,
);
why
})?
},
OwnedMessage::Ping(x) => {
self.send_message(&OwnedMessage::Pong(x))
.map_err(Error::from)?;
None
},
OwnedMessage::Pong(_) => None,
})
}
}
impl SenderExt for WsClient<TlsStream<TcpStream>> {
fn send_json(&mut self, value: &Value) -> Result<()> {
serde_json::to_string(value)
.map(OwnedMessage::Text)
.map_err(Error::from)
.and_then(|m| self.send_message(&m).map_err(Error::from))
}
}
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