WebSocketChannel (Undertow 2.1.0.Final API)

java.lang.Object
- io.undertow.server.protocol.framed.AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
- - io.undertow.websockets.core.WebSocketChannel

All Implemented Interfaces:

Closeable, AutoCloseable, Channel, InterruptibleChannel, org.xnio.channels.BoundChannel, org.xnio.channels.CloseableChannel, org.xnio.channels.Configurable, org.xnio.channels.ConnectedChannel

Direct Known Subclasses:

WebSocket07Channel
```
public abstract class WebSocketChannel
extends AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
```
A ConnectedChannel which can be used to send and receive WebSocket Frames.

Author:

Norman Maurer, Stuart Douglas

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static interface WebSocketChannel.PartialFrame
Interface that represents a frame channel that is in the process of being created

Nested Classes
Modifier and Type	Class and Description
`static interface`	`WebSocketChannel.PartialFrame` Interface that represents a frame channel that is in the process of being created

Field Summary

Fields
Modifier and Type	Field and Description
`protected ExtensionFunction`	`extensionFunction`
`protected boolean`	`extensionsSupported`
`protected StreamSourceFrameChannel`	`fragmentedChannel`
`protected boolean`	`hasReservedOpCode`

Fields inherited from interface org.xnio.channels.Configurable
EMPTY

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`WebSocketChannel(org.xnio.StreamConnection connectedStreamChannel, ByteBufferPool bufferPool, WebSocketVersion version, String wsUrl, String subProtocol, boolean client, boolean extensionsSupported, ExtensionFunction extensionFunction, Set<WebSocketChannel> peerConnections, org.xnio.OptionMap options)` Create a new `WebSocketChannel` 8

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`areExtensionsSupported()` Returns `true` if extensions are supported by this WebSocket Channel.
`protected StreamSourceFrameChannel`	`createChannel(FrameHeaderData frameHeaderData, PooledByteBuffer frameData)` Method that creates the actual stream source channel implementation that is in use.
`protected IdleTimeoutConduit`	`createIdleTimeoutChannel(org.xnio.StreamConnection connectedStreamChannel)`
`protected abstract StreamSinkFrameChannel`	`createStreamSinkChannel(WebSocketFrameType type)` Create a new StreamSinkFrameChannel which can be used to send a WebSocket Frame of the type `WebSocketFrameType`.
`Object`	`getAttribute(String key)`
`int`	`getCloseCode()`
`String`	`getCloseReason()`
`InetSocketAddress`	`getDestinationAddress()` Get the destination address of the WebSocket Channel.
`ExtensionFunction`	`getExtensionFunction()`
`protected WebSocketFramePriority`	`getFramePriority()`
`Set<WebSocketChannel>`	`getPeerConnections()` Returns all 'peer' web socket connections that were created from the same endpoint.
`protected Collection<AbstractFramedStreamSourceChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>>`	`getReceivers()`
`String`	`getRequestScheme()` Get the request URI scheme.
`InetSocketAddress`	`getSourceAddress()` Get the source address of the WebSocket Channel.
`String`	`getSubProtocol()`
`Set<String>`	`getSubProtocols()` Deprecated.
`String`	`getUrl()` Return the URL of the WebSocket endpoint.
`WebSocketVersion`	`getVersion()` Return the `WebSocketVersion` which is used
`protected void`	`handleBrokenSinkChannel(Throwable e)` Method that is invoked when then write side of a channel is broken.
`protected void`	`handleBrokenSourceChannel(Throwable e)` Method that is invoked when the read side of the channel is broken.
`boolean`	`isClient()`
`boolean`	`isCloseFrameReceived()`
`boolean`	`isCloseFrameSent()`
`boolean`	`isCloseInitiatedByRemotePeer()` If this is true the session is being closed because the remote peer sent a close frame
`protected boolean`	`isLastFrameReceived()` Returns true if the protocol specific final frame has been received.
`protected boolean`	`isLastFrameSent()`
`protected boolean`	`isReadsBroken()`
`boolean`	`isSecure()` Return `true` if this is handled via WebSocket Secure.
`protected void`	`lastDataRead()` Method than is invoked when read() returns -1.
`protected void`	`markReadsBroken(Throwable cause)` Called when a source sub channel fails to fulfil its contract, and leaves the channel in an inconsistent state.
`protected FrameHeaderData`	`parseFrame(ByteBuffer data)` Attempts to parse an incoming frame header from the data in the buffer.
`protected abstract WebSocketChannel.PartialFrame`	`receiveFrame()` Create a new `StreamSourceFrameChannel` which can be used to read the data of the received Frame
`StreamSinkFrameChannel`	`send(WebSocketFrameType type)` Returns a new `StreamSinkFrameChannel` for sending the given `WebSocketFrameType` with the given payload.
`void`	`sendClose()` Send a Close frame without a payload
`boolean`	`setAttribute(String key, Object value)`
`void`	`setCloseCode(int closeCode)`
`void`	`setCloseReason(String closeReason)`

Methods inherited from class io.undertow.server.protocol.framed.AbstractFramedChannel
addCloseTask, close, closeSubChannels, flush, flushSenders, getBufferPool, getCloseSetter, getIdleTimeout, getIoThread, getLocalAddress, getLocalAddress, getOption, getPeerAddress, getPeerAddress, getReceiveSetter, getSettings, getUnderlyingConnection, getWorker, isOpen, isReceivesResumed, isRequireExplicitFlush, isWritesBroken, markWritesBroken, queueFrame, recalculateHeldFrames, receive, resumeReceives, setIdleTimeout, setOption, setRequireExplicitFlush, supportsOption, suspendReceives, toString, writeExceptionHandler

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - extensionsSupported
```
protected final boolean extensionsSupported
```
  - extensionFunction
```
protected final ExtensionFunction extensionFunction
```
  - hasReservedOpCode
```
protected final boolean hasReservedOpCode
```
  - fragmentedChannel
```
protected StreamSourceFrameChannel fragmentedChannel
```
- Constructor Detail
  - WebSocketChannel
```
protected WebSocketChannel(org.xnio.StreamConnection connectedStreamChannel,
                           ByteBufferPool bufferPool,
                           WebSocketVersion version,
                           String wsUrl,
                           String subProtocol,
                           boolean client,
                           boolean extensionsSupported,
                           ExtensionFunction extensionFunction,
                           Set<WebSocketChannel> peerConnections,
                           org.xnio.OptionMap options)
```
    Create a new WebSocketChannel 8
    
    Parameters:
    
    connectedStreamChannel - The ConnectedStreamChannel over which the WebSocket Frames should get send and received. Be aware that it already must be "upgraded".
    
    bufferPool - The Pool which will be used to acquire ByteBuffer's from.
    
    version - The WebSocketVersion of the WebSocketChannel
    
    wsUrl - The url for which the channel was created.
    
    client -
    
    peerConnections - The concurrent set that is used to track open connections associtated with an endpoint
- Method Detail
  - getReceivers
```
protected Collection<AbstractFramedStreamSourceChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>> getReceivers()
```
    Specified by:
    
    getReceivers in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - createIdleTimeoutChannel
```
protected IdleTimeoutConduit createIdleTimeoutChannel(org.xnio.StreamConnection connectedStreamChannel)
```
    Overrides:
    
    createIdleTimeoutChannel in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - isLastFrameSent
```
protected boolean isLastFrameSent()
```
    Specified by:
    
    isLastFrameSent in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Returns:
    
    true If the last frame has been sent
  - isLastFrameReceived
```
protected boolean isLastFrameReceived()
```
    Description copied from class: AbstractFramedChannel
    
    Returns true if the protocol specific final frame has been received.
    
    Specified by:
    
    isLastFrameReceived in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Returns:
    
    true If the last frame has been received
  - markReadsBroken
```
protected void markReadsBroken(Throwable cause)
```
    Description copied from class: AbstractFramedChannel
    
    Called when a source sub channel fails to fulfil its contract, and leaves the channel in an inconsistent state.
    The underlying read side will be forcibly closed.
    
    Overrides:
    
    markReadsBroken in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Parameters:
    
    cause - The possibly null cause
  - lastDataRead
```
protected void lastDataRead()
```
    Description copied from class: AbstractFramedChannel
    
    Method than is invoked when read() returns -1.
    
    Overrides:
    
    lastDataRead in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - isReadsBroken
```
protected boolean isReadsBroken()
```
    Overrides:
    
    isReadsBroken in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - parseFrame
```
protected FrameHeaderData parseFrame(ByteBuffer data)
                              throws IOException
```
    Description copied from class: AbstractFramedChannel
    
    Attempts to parse an incoming frame header from the data in the buffer.
    
    Specified by:
    
    parseFrame in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Parameters:
    
    data - The data that has been read from the channel
    
    Returns:
    
    The frame header data, or null if the data was incomplete
    
    Throws:
    
    IOException - If the data could not be parsed.
  - receiveFrame
```
protected abstract WebSocketChannel.PartialFrame receiveFrame()
```
    Create a new StreamSourceFrameChannel which can be used to read the data of the received Frame
    
    Returns:
    
    channel A StreamSourceFrameChannel will be used to read a Frame from. This will return null if the right StreamSourceFrameChannel could not be detected with the given buffer and so more data is needed.
  - createChannel
```
protected StreamSourceFrameChannel createChannel(FrameHeaderData frameHeaderData,
                                                 PooledByteBuffer frameData)
```
    Description copied from class: AbstractFramedChannel
    
    Method that creates the actual stream source channel implementation that is in use.
    
    Specified by:
    
    createChannel in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Parameters:
    
    frameHeaderData - The header data, as returned by AbstractFramedChannel.parseFrame(java.nio.ByteBuffer)
    
    frameData - Any additional data for the frame that has already been read. This may not be the complete frame contents
    
    Returns:
    
    A new stream source channel
  - setAttribute
```
public final boolean setAttribute(String key,
                                  Object value)
```
  - getAttribute
```
public final Object getAttribute(String key)
```
  - areExtensionsSupported
```
public boolean areExtensionsSupported()
```
    Returns true if extensions are supported by this WebSocket Channel.
  - handleBrokenSourceChannel
```
protected void handleBrokenSourceChannel(Throwable e)
```
    Description copied from class: AbstractFramedChannel
    
    Method that is invoked when the read side of the channel is broken. This generally happens on a protocol error.
    
    Specified by:
    
    handleBrokenSourceChannel in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - handleBrokenSinkChannel
```
protected void handleBrokenSinkChannel(Throwable e)
```
    Description copied from class: AbstractFramedChannel
    
    Method that is invoked when then write side of a channel is broken. This generally happens on a protocol error.
    
    Specified by:
    
    handleBrokenSinkChannel in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - getSubProtocols
```
@Deprecated
public Set<String> getSubProtocols()
```
    Deprecated.
    
    Returns an unmodifiable Set of the selected subprotocols if any.
  - getSubProtocol
```
public String getSubProtocol()
```
  - isCloseFrameReceived
```
public boolean isCloseFrameReceived()
```
  - isCloseFrameSent
```
public boolean isCloseFrameSent()
```
  - getRequestScheme
```
public String getRequestScheme()
```
    Get the request URI scheme. Normally this is one of ws or wss.
    
    Returns:
    
    the request URI scheme
  - isSecure
```
public boolean isSecure()
```
    Return true if this is handled via WebSocket Secure.
  - getUrl
```
public String getUrl()
```
    Return the URL of the WebSocket endpoint.
    
    Returns:
    
    url The URL of the endpoint
  - getVersion
```
public WebSocketVersion getVersion()
```
    Return the WebSocketVersion which is used
    
    Returns:
    
    version The WebSocketVersion which is in use
  - getSourceAddress
```
public InetSocketAddress getSourceAddress()
```
    Get the source address of the WebSocket Channel.
    
    Overrides:
    
    getSourceAddress in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Returns:
    
    the source address of the WebSocket Channel
  - getDestinationAddress
```
public InetSocketAddress getDestinationAddress()
```
    Get the destination address of the WebSocket Channel.
    
    Overrides:
    
    getDestinationAddress in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
    
    Returns:
    
    the destination address of the WebSocket Channel
  - isClient
```
public boolean isClient()
```
  - send
```
public final StreamSinkFrameChannel send(WebSocketFrameType type)
                                  throws IOException
```
    Returns a new StreamSinkFrameChannel for sending the given WebSocketFrameType with the given payload. If this method is called multiple times, subsequent StreamSinkFrameChannel's will not be writable until all previous frames were completely written.
    
    Parameters:
    
    type - The WebSocketFrameType for which a StreamSinkChannel should be created
    
    Throws:
    
    IOException
  - sendClose
```
public void sendClose()
               throws IOException
```
    Send a Close frame without a payload
    
    Throws:
    
    IOException
  - createStreamSinkChannel
```
protected abstract StreamSinkFrameChannel createStreamSinkChannel(WebSocketFrameType type)
```
    Create a new StreamSinkFrameChannel which can be used to send a WebSocket Frame of the type WebSocketFrameType.
    
    Parameters:
    
    type - The WebSocketFrameType of the WebSocketFrame which will be send over this StreamSinkFrameChannel
  - getFramePriority
```
protected WebSocketFramePriority getFramePriority()
```
    Overrides:
    
    getFramePriority in class AbstractFramedChannel<WebSocketChannel,StreamSourceFrameChannel,StreamSinkFrameChannel>
  - getPeerConnections
```
public Set<WebSocketChannel> getPeerConnections()
```
    Returns all 'peer' web socket connections that were created from the same endpoint.
    
    Returns:
    
    all 'peer' web socket connections
  - isCloseInitiatedByRemotePeer
```
public boolean isCloseInitiatedByRemotePeer()
```
    If this is true the session is being closed because the remote peer sent a close frame
    
    Returns:
    
    true if the remote peer closed the connection
  - getCloseReason
```
public String getCloseReason()
```
    Returns:
    
    The close reason
  - setCloseReason
```
public void setCloseReason(String closeReason)
```
  - getCloseCode
```
public int getCloseCode()
```
    Returns:
    
    The close code
  - setCloseCode
```
public void setCloseCode(int closeCode)
```
  - getExtensionFunction
```
public ExtensionFunction getExtensionFunction()
```

Class WebSocketChannel

Nested Class Summary

Field Summary

Fields inherited from interface org.xnio.channels.Configurable

Constructor Summary

Method Summary

Methods inherited from class io.undertow.server.protocol.framed.AbstractFramedChannel

Methods inherited from class java.lang.Object

Field Detail

extensionsSupported

extensionFunction

hasReservedOpCode

fragmentedChannel

Constructor Detail

WebSocketChannel

Method Detail

getReceivers

createIdleTimeoutChannel

isLastFrameSent

isLastFrameReceived

markReadsBroken

lastDataRead

isReadsBroken

parseFrame

receiveFrame

createChannel

setAttribute

getAttribute

areExtensionsSupported

handleBrokenSourceChannel

handleBrokenSinkChannel

getSubProtocols

getSubProtocol

isCloseFrameReceived

isCloseFrameSent

getRequestScheme

isSecure

getUrl

getVersion

getSourceAddress

getDestinationAddress

isClient

send

sendClose

createStreamSinkChannel

getFramePriority

getPeerConnections

isCloseInitiatedByRemotePeer

getCloseReason

setCloseReason

getCloseCode

setCloseCode

getExtensionFunction