Create helpers for config-like functions

As suggested by @agalakhov

examples/autobahn-client.rs

@@ -12,7 +12,6 @@ const AGENT: &'static str = "Tungstenite";
 fn get_case_count() -> Result<u32> {
     let (mut socket, _) = connect(
         Url::parse("ws://localhost:9001/getCaseCount").unwrap(),
-        None,
     )?;
     let msg = socket.read_message()?;
     socket.close(None)?;
@@ -22,7 +21,6 @@ fn get_case_count() -> Result<u32> {
 fn update_reports() -> Result<()> {
     let (mut socket, _) = connect(
         Url::parse(&format!("ws://localhost:9001/updateReports?agent={}", AGENT)).unwrap(),
-        None,
     )?;
     socket.close(None)?;
     Ok(())
@@ -33,7 +31,7 @@ fn run_test(case: u32) -> Result<()> {
     let case_url = Url::parse(
         &format!("ws://localhost:9001/runCase?case={}&agent={}", case, AGENT)
     ).unwrap();
-    let (mut socket, _) = connect(case_url, None)?;
+    let (mut socket, _) = connect(case_url)?;
     loop {
         match socket.read_message()? {
             msg @ Message::Text(_) |

examples/autobahn-server.rs

@@ -16,7 +16,7 @@ fn must_not_block<Role: HandshakeRole>(err: HandshakeError<Role>) -> Error {
 }
 
 fn handle_client(stream: TcpStream) -> Result<()> {
-    let mut socket = accept(stream, None).map_err(must_not_block)?;
+    let mut socket = accept(stream).map_err(must_not_block)?;
     loop {
         match socket.read_message()? {
             msg @ Message::Text(_) |

examples/client.rs

@@ -8,7 +8,7 @@ use tungstenite::{Message, connect};
 fn main() {
     env_logger::init();
 
-    let (mut socket, response) = connect(Url::parse("ws://localhost:3012/socket").unwrap(), None)
+    let (mut socket, response) = connect(Url::parse("ws://localhost:3012/socket").unwrap())
         .expect("Can't connect");
 
     println!("Connected to the server");

examples/server.rs

@@ -25,7 +25,7 @@ fn main() {
                 ];
                 Ok(Some(extra_headers))
             };
-            let mut websocket = accept_hdr(stream.unwrap(), callback, None).unwrap();
+            let mut websocket = accept_hdr(stream.unwrap(), callback).unwrap();
 
             loop {
                 let msg = websocket.read_message().unwrap();

src/client.rs

@@ -68,6 +68,9 @@ use error::{Error, Result};
 
 /// Connect to the given WebSocket in blocking mode.
 ///
+/// Uses a websocket configuration passed as an argument to the function. Calling it with `None` is
+/// equal to calling `connect()` function.
+///
 /// The URL may be either ws:// or wss://.
 /// To support wss:// URLs, feature "tls" must be turned on.
 ///
@@ -78,21 +81,40 @@ use error::{Error, Result};
 /// This function uses `native_tls` to do TLS. If you want to use other TLS libraries,
 /// use `client` instead. There is no need to enable the "tls" feature if you don't call
 /// `connect` since it's the only function that uses native_tls.
-pub fn connect<'t, Req: Into<Request<'t>>>(request: Req, config: Option<WebSocketConfig>)
+pub fn connect_with_config<'t, Req: Into<Request<'t>>>(
-    -> Result<(WebSocket<AutoStream>, Response)>
+    request: Req,
-{
+    config: Option<WebSocketConfig>
+) -> Result<(WebSocket<AutoStream>, Response)> {
     let request: Request = request.into();
     let mode = url_mode(&request.url)?;
     let addrs = request.url.to_socket_addrs()?;
     let mut stream = connect_to_some(addrs, &request.url, mode)?;
     NoDelay::set_nodelay(&mut stream, true)?;
-    client(request, stream, config)
+    client_with_config(request, stream, config)
         .map_err(|e| match e {
             HandshakeError::Failure(f) => f,
             HandshakeError::Interrupted(_) => panic!("Bug: blocking handshake not blocked"),
         })
 }
 
+/// Connect to the given WebSocket in blocking mode.
+///
+/// The URL may be either ws:// or wss://.
+/// To support wss:// URLs, feature "tls" must be turned on.
+///
+/// This function "just works" for those who wants a simple blocking solution
+/// similar to `std::net::TcpStream`. If you want a non-blocking or other
+/// custom stream, call `client` instead.
+///
+/// This function uses `native_tls` to do TLS. If you want to use other TLS libraries,
+/// use `client` instead. There is no need to enable the "tls" feature if you don't call
+/// `connect` since it's the only function that uses native_tls.
+pub fn connect<'t, Req: Into<Request<'t>>>(request: Req)
+    -> Result<(WebSocket<AutoStream>, Response)>
+{
+    connect_with_config(request, None)
+}
+
 fn connect_to_some<A>(addrs: A, url: &Url, mode: Mode) -> Result<AutoStream>
     where A: Iterator<Item=SocketAddr>
 {
@@ -120,12 +142,13 @@ pub fn url_mode(url: &Url) -> Result<Mode> {
     }
 }
 
-/// Do the client handshake over the given stream.
+/// Do the client handshake over the given stream given a web socket configuration. Passing `None`
+/// as configuration is equal to calling `client()` function.
 ///
 /// Use this function if you need a nonblocking handshake support or if you
 /// want to use a custom stream like `mio::tcp::TcpStream` or `openssl::ssl::SslStream`.
 /// Any stream supporting `Read + Write` will do.
-pub fn client<'t, Stream, Req>(
+pub fn client_with_config<'t, Stream, Req>(
     request: Req,
     stream: Stream,
     config: Option<WebSocketConfig>,
@@ -136,3 +159,17 @@ where
 {
     ClientHandshake::start(stream, request.into(), config).handshake()
 }
+
+/// Do the client handshake over the given stream.
+///
+/// Use this function if you need a nonblocking handshake support or if you
+/// want to use a custom stream like `mio::tcp::TcpStream` or `openssl::ssl::SslStream`.
+/// Any stream supporting `Read + Write` will do.
+pub fn client<'t, Stream, Req>(request: Req, stream: Stream)
+    -> StdResult<(WebSocket<Stream>, Response), HandshakeError<ClientHandshake<Stream>>>
+where
+    Stream: Read + Write,
+    Req: Into<Request<'t>>,
+{
+    client_with_config(request, stream, None)
+}

src/server.rs

@@ -9,27 +9,56 @@ use protocol::{WebSocket, WebSocketConfig};
 
 use std::io::{Read, Write};
 
+/// Accept the given Stream as a WebSocket.
+///
+/// Uses a configuration provided as an argument. Calling it with `None` will use the default one
+/// used by `accept()`.
+///
+/// This function starts a server WebSocket handshake over the given stream.
+/// If you want TLS support, use `native_tls::TlsStream` or `openssl::ssl::SslStream`
+/// for the stream here. Any `Read + Write` streams are supported, including
+/// those from `Mio` and others.
+pub fn accept_with_config<S: Read + Write>(stream: S, config: Option<WebSocketConfig>)
+    -> Result<WebSocket<S>, HandshakeError<ServerHandshake<S, NoCallback>>>
+{
+    accept_hdr_with_config(stream, NoCallback, config)
+}
+
 /// Accept the given Stream as a WebSocket.
 ///
 /// This function starts a server WebSocket handshake over the given stream.
 /// If you want TLS support, use `native_tls::TlsStream` or `openssl::ssl::SslStream`
 /// for the stream here. Any `Read + Write` streams are supported, including
 /// those from `Mio` and others.
-pub fn accept<S: Read + Write>(stream: S, config: Option<WebSocketConfig>)
+pub fn accept<S: Read + Write>(stream: S)
     -> Result<WebSocket<S>, HandshakeError<ServerHandshake<S, NoCallback>>>
 {
-    accept_hdr(stream, NoCallback, config)
+    accept_with_config(stream, None)
 }
 
 /// Accept the given Stream as a WebSocket.
 ///
+/// Uses a configuration provided as an argument. Calling it with `None` will use the default one
+/// used by `accept_hdr()`.
+///
 /// This function does the same as `accept()` but accepts an extra callback
 /// for header processing. The callback receives headers of the incoming
 /// requests and is able to add extra headers to the reply.
-pub fn accept_hdr<S: Read + Write, C: Callback>(
+pub fn accept_hdr_with_config<S: Read + Write, C: Callback>(
     stream: S,
     callback: C,
     config: Option<WebSocketConfig>
 ) -> Result<WebSocket<S>, HandshakeError<ServerHandshake<S, C>>> {
     ServerHandshake::start(stream, callback, config).handshake()
 }
+
+/// Accept the given Stream as a WebSocket.
+///
+/// This function does the same as `accept()` but accepts an extra callback
+/// for header processing. The callback receives headers of the incoming
+/// requests and is able to add extra headers to the reply.
+pub fn accept_hdr<S: Read + Write, C: Callback>(stream: S, callback: C)
+    -> Result<WebSocket<S>, HandshakeError<ServerHandshake<S, C>>>
+{
+    accept_hdr_with_config(stream, callback, None)
+}