fix readme.

Author: jjeffcaii

rsocket-transport-websocket/README.md

@@ -1,2 +1,68 @@
 # RSocket Transport For Websocket
 
+## Example
+
+Add dependencies in your `Cargo.toml`.
+
+```toml
+[dependencies]
+tokio = "0.2.11"
+rsocket_rust = "0.5.0"
+
+# choose transport:
+# rsocket_rust_transport_tcp = "0.5.0"
+# rsocket_rust_transport_websocket = "0.5.0"
+```
+
+### Server
+
+```rust
+use rsocket_rust::prelude::*;
+use rsocket_rust_transport_websocket::WebsocketServerTransport;
+use std::env;
+use std::error::Error;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error + Send + Sync>> {
+    RSocketFactory::receive()
+        .transport(WebsocketServerTransport::from("127.0.0.1:8080"))
+        .acceptor(|setup, _socket| {
+            println!("accept setup: {:?}", setup)
+            Ok(Box::new(EchoRSocket))
+            // Or you can reject setup
+            // Err(From::from("SETUP_NOT_ALLOW"))
+        })
+        .on_start(|| println!("+++++++ echo server started! +++++++"))
+        .serve()
+        .await
+}
+
+```
+
+### Client
+
+```rust
+use rsocket_rust::prelude::*;
+use rsocket_rust_transport_websocket::WebsocketClientTransport;
+
+#[tokio::main]
+#[test]
+async fn test() {
+    let cli = RSocketFactory::connect()
+        .acceptor(|| Box::new(EchoRSocket))
+        .transport(WebsocketClientTransport::from("127.0.0.1:8080"))
+        .setup(Payload::from("READY!"))
+        .mime_type("text/plain", "text/plain")
+        .start()
+        .await
+        .unwrap();
+    let req = Payload::builder()
+        .set_data_utf8("Hello World!")
+        .set_metadata_utf8("Rust")
+        .build();
+    let res = cli.request_response(req).await.unwrap();
+    println!("got: {:?}", res);
+    cli.close();
+}
+
+```