Class WebSocket

    • Field Detail

      • __TYPE_ARG

        public static final io.vertx.lang.rx.TypeArg<WebSocket> __TYPE_ARG
    • Constructor Detail

      • WebSocket

        public WebSocket​(WebSocket delegate)
      • WebSocket

        public WebSocket​(Object delegate)
    • Method Detail

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object
      • pipe

        public Pipe<Buffer> pipe()
        Pause this stream and return a to transfer the elements of this stream to a destination .

        The stream will be resumed when the pipe will be wired to a WriteStream.

        Specified by:
        pipe in interface ReadStream<Buffer>
        Specified by:
        pipe in interface WebSocketBase
        Returns:
        a pipe
      • pipeTo

        public Future<Void> pipeTo​(WriteStream<Buffer> dst)
        Pipe this ReadStream to the WriteStream.

        Elements emitted by this stream will be written to the write stream until this stream ends or fails.

        Specified by:
        pipeTo in interface ReadStream<Buffer>
        Specified by:
        pipeTo in interface WebSocketBase
        Parameters:
        dst - the destination write stream
        Returns:
        a future notified when the write stream will be ended with the outcome
      • rxPipeTo

        public Completable rxPipeTo​(WriteStream<Buffer> dst)
        Pipe this ReadStream to the WriteStream.

        Elements emitted by this stream will be written to the write stream until this stream ends or fails.

        Specified by:
        rxPipeTo in interface ReadStream<Buffer>
        Specified by:
        rxPipeTo in interface WebSocketBase
        Parameters:
        dst - the destination write stream
        Returns:
        a future notified when the write stream will be ended with the outcome
      • write

        public Future<Void> write​(Buffer data)
        Write some data to the stream.

        The data is usually put on an internal write queue, and the write actually happens asynchronously. To avoid running out of memory by putting too much on the write queue, check the WriteStream.writeQueueFull() method before writing. This is done automatically if using a .

        When the data is moved from the queue to the actual medium, the returned will be completed with the write result, e.g the future is succeeded when a server HTTP response buffer is written to the socket and failed if the remote client has closed the socket while the data was still pending for write.

        Specified by:
        write in interface WebSocketBase
        Specified by:
        write in interface WriteStream<Buffer>
        Parameters:
        data - the data to write
        Returns:
        a future completed with the write result
      • rxWrite

        public Completable rxWrite​(Buffer data)
        Write some data to the stream.

        The data is usually put on an internal write queue, and the write actually happens asynchronously. To avoid running out of memory by putting too much on the write queue, check the WriteStream.writeQueueFull() method before writing. This is done automatically if using a .

        When the data is moved from the queue to the actual medium, the returned will be completed with the write result, e.g the future is succeeded when a server HTTP response buffer is written to the socket and failed if the remote client has closed the socket while the data was still pending for write.

        Specified by:
        rxWrite in interface WebSocketBase
        Specified by:
        rxWrite in interface WriteStream<Buffer>
        Parameters:
        data - the data to write
        Returns:
        a future completed with the write result
      • binaryHandlerID

        public String binaryHandlerID()
        When a WebSocket is created, it may register an event handler with the event bus - the ID of that handler is given by this method.

        By default, no handler is registered, the feature must be enabled via WebSocketConnectOptions or HttpServerOptions.

        Given this ID, a different event loop can send a binary frame to that event handler using the event bus and that buffer will be received by this instance in its own event loop and written to the underlying connection. This allows you to write data to other WebSockets which are owned by different event loops.

        Specified by:
        binaryHandlerID in interface WebSocketBase
        Returns:
        the binary handler id
      • textHandlerID

        public String textHandlerID()
        When a WebSocket is created, it may register an event handler with the eventbus, the ID of that handler is given by textHandlerID.

        By default, no handler is registered, the feature must be enabled via WebSocketConnectOptions or HttpServerOptions.

        Given this ID, a different event loop can send a text frame to that event handler using the event bus and that buffer will be received by this instance in its own event loop and written to the underlying connection. This allows you to write data to other WebSockets which are owned by different event loops.

        Specified by:
        textHandlerID in interface WebSocketBase
        Returns:
        the text handler id
      • subProtocol

        public String subProtocol()
        Returns the WebSocket sub protocol selected by the WebSocket handshake.

        On the server, the value will be null when the handler receives the WebSocket callback as the handshake will not be completed yet.

        Specified by:
        subProtocol in interface WebSocketBase
        Returns:
      • closeStatusCode

        public Short closeStatusCode()
        Returns the close status code received from the remote endpoint or null when not yet received.
        Specified by:
        closeStatusCode in interface WebSocketBase
        Returns:
      • closeReason

        public String closeReason()
        Returns the close reason message from the remote endpoint or null when not yet received.
        Specified by:
        closeReason in interface WebSocketBase
        Returns:
      • writeFrame

        public Future<Void> writeFrame​(WebSocketFrame frame)
        Write a WebSocket frame to the connection
        Specified by:
        writeFrame in interface WebSocketBase
        Parameters:
        frame - the frame to write
        Returns:
        a future completed with the result
      • rxWriteFrame

        public Completable rxWriteFrame​(WebSocketFrame frame)
        Write a WebSocket frame to the connection
        Specified by:
        rxWriteFrame in interface WebSocketBase
        Parameters:
        frame - the frame to write
        Returns:
        a future completed with the result
      • writeFinalTextFrame

        public Future<Void> writeFinalTextFrame​(String text)
        Write a final WebSocket text frame to the connection
        Specified by:
        writeFinalTextFrame in interface WebSocketBase
        Parameters:
        text - The text to write
        Returns:
        a future completed with the result
      • rxWriteFinalTextFrame

        public Completable rxWriteFinalTextFrame​(String text)
        Write a final WebSocket text frame to the connection
        Specified by:
        rxWriteFinalTextFrame in interface WebSocketBase
        Parameters:
        text - The text to write
        Returns:
        a future completed with the result
      • writeFinalBinaryFrame

        public Future<Void> writeFinalBinaryFrame​(Buffer data)
        Write a final WebSocket binary frame to the connection
        Specified by:
        writeFinalBinaryFrame in interface WebSocketBase
        Parameters:
        data - The data to write
        Returns:
        a future completed with the result
      • rxWriteFinalBinaryFrame

        public Completable rxWriteFinalBinaryFrame​(Buffer data)
        Write a final WebSocket binary frame to the connection
        Specified by:
        rxWriteFinalBinaryFrame in interface WebSocketBase
        Parameters:
        data - The data to write
        Returns:
        a future completed with the result
      • writeBinaryMessage

        public Future<Void> writeBinaryMessage​(Buffer data)
        Writes a (potentially large) piece of binary data to the connection. This data might be written as multiple frames if it exceeds the maximum WebSocket frame size.
        Specified by:
        writeBinaryMessage in interface WebSocketBase
        Parameters:
        data - the data to write
        Returns:
        a future completed with the result
      • rxWriteBinaryMessage

        public Completable rxWriteBinaryMessage​(Buffer data)
        Writes a (potentially large) piece of binary data to the connection. This data might be written as multiple frames if it exceeds the maximum WebSocket frame size.
        Specified by:
        rxWriteBinaryMessage in interface WebSocketBase
        Parameters:
        data - the data to write
        Returns:
        a future completed with the result
      • writeTextMessage

        public Future<Void> writeTextMessage​(String text)
        Writes a (potentially large) piece of text data to the connection. This data might be written as multiple frames if it exceeds the maximum WebSocket frame size.
        Specified by:
        writeTextMessage in interface WebSocketBase
        Parameters:
        text - the data to write
        Returns:
        a future completed with the result
      • rxWriteTextMessage

        public Completable rxWriteTextMessage​(String text)
        Writes a (potentially large) piece of text data to the connection. This data might be written as multiple frames if it exceeds the maximum WebSocket frame size.
        Specified by:
        rxWriteTextMessage in interface WebSocketBase
        Parameters:
        text - the data to write
        Returns:
        a future completed with the result
      • writePing

        public Future<Void> writePing​(Buffer data)
        Writes a ping frame to the connection. This will be written in a single frame. Ping frames may be at most 125 bytes (octets).

        This method should not be used to write application data and should only be used for implementing a keep alive or to ensure the client is still responsive, see RFC 6455 Section section 5.5.2.

        There is no handler for ping frames because RFC 6455 clearly states that the only response to a ping frame is a pong frame with identical contents.

        Specified by:
        writePing in interface WebSocketBase
        Parameters:
        data - the data to write, may be at most 125 bytes
        Returns:
        a future notified when the ping frame has been successfully written
      • rxWritePing

        public Completable rxWritePing​(Buffer data)
        Writes a ping frame to the connection. This will be written in a single frame. Ping frames may be at most 125 bytes (octets).

        This method should not be used to write application data and should only be used for implementing a keep alive or to ensure the client is still responsive, see RFC 6455 Section section 5.5.2.

        There is no handler for ping frames because RFC 6455 clearly states that the only response to a ping frame is a pong frame with identical contents.

        Specified by:
        rxWritePing in interface WebSocketBase
        Parameters:
        data - the data to write, may be at most 125 bytes
        Returns:
        a future notified when the ping frame has been successfully written
      • writePong

        public Future<Void> writePong​(Buffer data)
        Writes a pong frame to the connection. This will be written in a single frame. Pong frames may be at most 125 bytes (octets).

        This method should not be used to write application data and should only be used for implementing a keep alive or to ensure the client is still responsive, see RFC 6455 section 5.5.2.

        There is no need to manually write a pong frame, as the server and client both handle responding to a ping from with a pong from automatically and this is exposed to users. RFC 6455 section 5.5.3 states that pongs may be sent unsolicited in order to implement a one way heartbeat.

        Specified by:
        writePong in interface WebSocketBase
        Parameters:
        data - the data to write, may be at most 125 bytes
        Returns:
        a future notified when the pong frame has been successfully written
      • rxWritePong

        public Completable rxWritePong​(Buffer data)
        Writes a pong frame to the connection. This will be written in a single frame. Pong frames may be at most 125 bytes (octets).

        This method should not be used to write application data and should only be used for implementing a keep alive or to ensure the client is still responsive, see RFC 6455 section 5.5.2.

        There is no need to manually write a pong frame, as the server and client both handle responding to a ping from with a pong from automatically and this is exposed to users. RFC 6455 section 5.5.3 states that pongs may be sent unsolicited in order to implement a one way heartbeat.

        Specified by:
        rxWritePong in interface WebSocketBase
        Parameters:
        data - the data to write, may be at most 125 bytes
        Returns:
        a future notified when the pong frame has been successfully written
      • close

        public Future<Void> close()
        Close the WebSocket sending the default close frame.

        No more messages can be sent.

        Specified by:
        close in interface WebSocketBase
        Returns:
        a future completed with the result
      • rxClose

        public Completable rxClose()
        Close the WebSocket sending the default close frame.

        No more messages can be sent.

        Specified by:
        rxClose in interface WebSocketBase
        Returns:
        a future completed with the result
      • close

        public Future<Void> close​(short statusCode)
        Close the WebSocket sending a close frame with specified status code. You can give a look at various close payloads here: RFC6455 section 7.4.1

        No more messages can be sent.

        Specified by:
        close in interface WebSocketBase
        Parameters:
        statusCode - the status code
        Returns:
        a future completed with the result
      • rxClose

        public Completable rxClose​(short statusCode)
        Close the WebSocket sending a close frame with specified status code. You can give a look at various close payloads here: RFC6455 section 7.4.1

        No more messages can be sent.

        Specified by:
        rxClose in interface WebSocketBase
        Parameters:
        statusCode - the status code
        Returns:
        a future completed with the result
      • close

        public Future<Void> close​(short statusCode,
                                  String reason)
        Close sending a close frame with specified status code and reason. You can give a look at various close payloads here: RFC6455 section 7.4.1

        No more messages can be sent.

        Specified by:
        close in interface WebSocketBase
        Parameters:
        statusCode - the status code
        reason - reason of closure
        Returns:
        a future completed with the result
      • rxClose

        public Completable rxClose​(short statusCode,
                                   String reason)
        Close sending a close frame with specified status code and reason. You can give a look at various close payloads here: RFC6455 section 7.4.1

        No more messages can be sent.

        Specified by:
        rxClose in interface WebSocketBase
        Parameters:
        statusCode - the status code
        reason - reason of closure
        Returns:
        a future completed with the result
      • shutdown

        public Future<Void> shutdown​(long timeout,
                                     TimeUnit unit,
                                     short statusCode,
                                     String reason)
        Initiate a graceful WebSocket shutdown, the shutdown handler is notified and shall close the WebSocket, otherwise after a timeout the WebSocket will be closed.

        The WebSocket is closed with specified status code and reason. You can give a look at various close payloads here: RFC6455 section 7.4.1

        Specified by:
        shutdown in interface WebSocketBase
        Parameters:
        timeout - the amount of time after which all resources are forcibly closed
        unit - the of the timeout
        statusCode - the status code
        reason - reason of closure
        Returns:
        a future completed when shutdown has completed
      • rxShutdown

        public Completable rxShutdown​(long timeout,
                                      TimeUnit unit,
                                      short statusCode,
                                      String reason)
        Initiate a graceful WebSocket shutdown, the shutdown handler is notified and shall close the WebSocket, otherwise after a timeout the WebSocket will be closed.

        The WebSocket is closed with specified status code and reason. You can give a look at various close payloads here: RFC6455 section 7.4.1

        Specified by:
        rxShutdown in interface WebSocketBase
        Parameters:
        timeout - the amount of time after which all resources are forcibly closed
        unit - the of the timeout
        statusCode - the status code
        reason - reason of closure
        Returns:
        a future completed when shutdown has completed
      • remoteAddress

        public SocketAddress remoteAddress()
        Specified by:
        remoteAddress in interface WebSocketBase
        Returns:
        the remote address for this connection, possibly null (e.g a server bound on a domain socket). If useProxyProtocol is set to true, the address returned will be of the actual connecting client.
      • localAddress

        public SocketAddress localAddress()
        Specified by:
        localAddress in interface WebSocketBase
        Returns:
        the local address for this connection, possibly null (e.g a server bound on a domain socket) If useProxyProtocol is set to true, the address returned will be of the proxy.
      • isClosed

        public boolean isClosed()
        Specified by:
        isClosed in interface WebSocketBase
        Returns:
        true if the WebSocket cannot be used to send message anymore
      • pause

        public WebSocket pause()
        Description copied from interface: ReadStream
        Pause the ReadStream, it sets the buffer in fetch mode and clears the actual demand.

        While it's paused, no data will be sent to the data handler.

        Specified by:
        pause in interface ReadStream<Buffer>
        Specified by:
        pause in interface WebSocketBase
        Returns:
        a reference to this, so the API can be used fluently
      • resume

        public WebSocket resume()
        Description copied from interface: ReadStream
        Resume reading, and sets the buffer in flowing mode.

        If the ReadStream has been paused, reading will recommence on it.

        Specified by:
        resume in interface ReadStream<Buffer>
        Specified by:
        resume in interface WebSocketBase
        Returns:
        a reference to this, so the API can be used fluently
      • fetch

        public WebSocket fetch​(long amount)
        Description copied from interface: ReadStream
        Fetch the specified amount of elements. If the ReadStream has been paused, reading will recommence with the specified amount of items, otherwise the specified amount will be added to the current stream demand.
        Specified by:
        fetch in interface ReadStream<Buffer>
        Specified by:
        fetch in interface WebSocketBase
        Returns:
        a reference to this, so the API can be used fluently
      • endHandler

        public WebSocket endHandler​(Handler<Void> endHandler)
        Description copied from interface: ReadStream
        Set an end handler. Once the stream has ended, and there is no more data to be read, this handler will be called.
        Specified by:
        endHandler in interface ReadStream<Buffer>
        Specified by:
        endHandler in interface WebSocketBase
        Returns:
        a reference to this, so the API can be used fluently
      • setWriteQueueMaxSize

        public WebSocket setWriteQueueMaxSize​(int maxSize)
        Description copied from interface: WriteStream
        Set the maximum size of the write queue to maxSize. You will still be able to write to the stream even if there is more than maxSize items in the write queue. This is used as an indicator by classes such as Pipe to provide flow control.

        The value is defined by the implementation of the stream, e.g in bytes for a NetSocket, etc...

        Specified by:
        setWriteQueueMaxSize in interface WebSocketBase
        Specified by:
        setWriteQueueMaxSize in interface WriteStream<Buffer>
        Parameters:
        maxSize - the max size of the write stream
        Returns:
        a reference to this, so the API can be used fluently
      • drainHandler

        public WebSocket drainHandler​(Handler<Void> handler)
        Description copied from interface: WriteStream
        Set a drain handler on the stream. If the write queue is full, then the handler will be called when the write queue is ready to accept buffers again. See Pipe for an example of this being used.

        The stream implementation defines when the drain handler, for example it could be when the queue size has been reduced to maxSize / 2.

        Specified by:
        drainHandler in interface WebSocketBase
        Specified by:
        drainHandler in interface WriteStream<Buffer>
        Parameters:
        handler - the handler
        Returns:
        a reference to this, so the API can be used fluently
      • shutdownHandler

        public WebSocket shutdownHandler​(Handler<Void> handler)
        Description copied from interface: WebSocketBase
        Set a handler notified when the WebSocket is shutdown: the client or server will close the connection within a certain amount of time. This gives the opportunity to the handler to close the WebSocket gracefully before the WebSocket is forcefully closed.
        Specified by:
        shutdownHandler in interface WebSocketBase
        Parameters:
        handler - the handler notified with the remaining shutdown
        Returns:
        a reference to this, so the API can be used fluently
      • frameHandler

        public WebSocket frameHandler​(Handler<WebSocketFrame> handler)
        Description copied from interface: WebSocketBase
        Set a frame handler on the connection. This handler will be called when frames are read on the connection.
        Specified by:
        frameHandler in interface WebSocketBase
        Parameters:
        handler - the handler
        Returns:
        a reference to this, so the API can be used fluently
      • pongHandler

        public WebSocket pongHandler​(Handler<Buffer> handler)
        Description copied from interface: WebSocketBase
        Set a pong frame handler on the connection. This handler will be invoked every time a pong frame is received on the server, and can be used by both clients and servers since the RFC 6455 section 5.5.2 and section 5.5.3 do not specify whether the client or server sends a ping.

        Pong frames may be at most 125 bytes (octets).

        There is no ping handler since ping frames should immediately be responded to with a pong frame with identical content

        Pong frames may be received unsolicited.

        Specified by:
        pongHandler in interface WebSocketBase
        Parameters:
        handler - the handler
        Returns:
        a reference to this, so the API can be used fluently
      • sslSession

        public SSLSession sslSession()
        Returns:
        SSLSession associated with the underlying socket. Returns null if connection is not SSL.