public abstract class AbstractHttpSockJsSession extends AbstractSockJsSession
logger
Constructor and Description |
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AbstractHttpSockJsSession(String id,
SockJsServiceConfig config,
WebSocketHandler wsHandler,
Map<String,Object> handshakeAttributes) |
Modifier and Type | Method and Description |
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protected void |
disconnect(CloseStatus status) |
protected abstract void |
flushCache()
Only called if the connection is currently active
|
String |
getAcceptedProtocol()
Return the selected sub-protocol to use.
|
List<WebSocketExtension> |
getExtensions()
Return the negotiated extensions or
null if none was specified or
negotiated successfully. |
HttpHeaders |
getHandshakeHeaders()
Return the headers used in the handshake request.
|
InetSocketAddress |
getLocalAddress()
Return the address on which the request was received.
|
protected BlockingQueue<String> |
getMessageCache() |
Principal |
getPrincipal()
Return a
Principal instance containing the name of the
authenticated user. |
InetSocketAddress |
getRemoteAddress()
Return the address of the remote client.
|
protected ServerHttpRequest |
getRequest() |
protected ServerHttpResponse |
getResponse() |
URI |
getUri()
Return the URI used to open the WebSocket connection.
|
void |
handleInitialRequest(ServerHttpRequest request,
ServerHttpResponse response,
SockJsFrameFormat frameFormat)
Handle the first HTTP request, i.e.
|
void |
handleSuccessiveRequest(ServerHttpRequest request,
ServerHttpResponse response,
SockJsFrameFormat frameFormat)
Handle all HTTP requests part of the same SockJS session except for the very
first, initial request.
|
boolean |
isActive()
Polling and Streaming sessions periodically close the current HTTP request and
wait for the next request to come through.
|
protected void |
resetRequest() |
protected void |
sendMessageInternal(String message) |
void |
setAcceptedProtocol(String protocol)
Unlike WebSocket where sub-protocol negotiation is part of the
initial handshake, in HTTP transports the same negotiation must
be emulated and the selected protocol set through this setter.
|
protected void |
startAsyncRequest() |
protected void |
writeFrameInternal(SockJsFrame frame) |
protected void |
writePrelude() |
cancelHeartbeat, close, close, delegateConnectionClosed, delegateConnectionEstablished, delegateError, delegateMessages, getHandshakeAttributes, getId, getSockJsServiceConfig, getTimeSinceLastActive, isClosed, isNew, isOpen, scheduleHeartbeat, sendHeartbeat, sendMessage, toString, tryCloseWithSockJsTransportError, updateLastActiveTime, writeFrame
public AbstractHttpSockJsSession(String id, SockJsServiceConfig config, WebSocketHandler wsHandler, Map<String,Object> handshakeAttributes)
public URI getUri()
WebSocketSession
public HttpHeaders getHandshakeHeaders()
WebSocketSession
public Principal getPrincipal()
WebSocketSession
Principal
instance containing the name of the
authenticated user. If the user has not been authenticated, the method returns
null
.public InetSocketAddress getLocalAddress()
WebSocketSession
public InetSocketAddress getRemoteAddress()
WebSocketSession
public void setAcceptedProtocol(String protocol)
protocol
- the sub-protocol to setpublic String getAcceptedProtocol()
public List<WebSocketExtension> getExtensions()
WebSocketSession
null
if none was specified or
negotiated successfully.public void handleInitialRequest(ServerHttpRequest request, ServerHttpResponse response, SockJsFrameFormat frameFormat) throws SockJsException
The "xhr" and "jsonp" (polling-based) transports completes the initial request as soon as the open frame is sent. Following that the client should start a successive polling request within the same SockJS session.
The "xhr_streaming", "eventsource", and "htmlfile" transports are streaming based and will leave the initial request open in order to stream one or more messages. However, even streaming based transports eventually recycle the long running request, after a certain number of bytes have been streamed (128K by default), and allow the client to start a successive request within the same SockJS session.
request
- the current requestresponse
- the current responseframeFormat
- the transport-specific SocksJS frame format to useSockJsException
handleSuccessiveRequest(org.springframework.http.server.ServerHttpRequest, org.springframework.http.server.ServerHttpResponse, org.springframework.web.socket.sockjs.frame.SockJsFrameFormat)
protected void writePrelude() throws IOException
IOException
public void handleSuccessiveRequest(ServerHttpRequest request, ServerHttpResponse response, SockJsFrameFormat frameFormat) throws SockJsException
The "xhr" and "jsonp" (polling-based) transports completes the request when the next message is sent, which could be an array of messages cached during the time between successive requests, or it could be a heartbeat message sent if no other messages were sent (by default within 25 seconds).
The "xhr_streaming", "eventsource", and "htmlfile" transports are streaming based and will leave the request open longer in order to stream messages over a period of time. However, even streaming based transports eventually recycle the long running request, after a certain number of bytes have been streamed (128K by default), and allow the client to start a successive request within the same SockJS session.
request
- the current requestresponse
- the current responseframeFormat
- the transport-specific SocksJS frame format to useSockJsException
handleInitialRequest(org.springframework.http.server.ServerHttpRequest, org.springframework.http.server.ServerHttpResponse, org.springframework.web.socket.sockjs.frame.SockJsFrameFormat)
protected void startAsyncRequest() throws SockJsException
SockJsException
public boolean isActive()
AbstractSockJsSession
isActive
in class AbstractSockJsSession
protected BlockingQueue<String> getMessageCache()
protected ServerHttpRequest getRequest()
protected ServerHttpResponse getResponse()
protected final void sendMessageInternal(String message) throws SockJsTransportFailureException
sendMessageInternal
in class AbstractSockJsSession
SockJsTransportFailureException
protected abstract void flushCache() throws SockJsTransportFailureException
SockJsTransportFailureException
protected void disconnect(CloseStatus status)
disconnect
in class AbstractSockJsSession
protected void resetRequest()
protected void writeFrameInternal(SockJsFrame frame) throws IOException
writeFrameInternal
in class AbstractSockJsSession
IOException