List of usage examples for org.springframework.messaging.simp.stomp StompHeaderAccessor getHeader
@Nullable
public Object getHeader(String headerName)
From source file:org.springframework.messaging.simp.stomp.StompDecoder.java
/** * Decode a single STOMP frame from the given {@code buffer} into a {@link Message}. *//*from w ww .ja v a2s . com*/ @Nullable private Message<byte[]> decodeMessage(ByteBuffer byteBuffer, @Nullable MultiValueMap<String, String> headers) { Message<byte[]> decodedMessage = null; skipLeadingEol(byteBuffer); // Explicit mark/reset access via Buffer base type for compatibility // with covariant return type on JDK 9's ByteBuffer... Buffer buffer = byteBuffer; buffer.mark(); String command = readCommand(byteBuffer); if (command.length() > 0) { StompHeaderAccessor headerAccessor = null; byte[] payload = null; if (byteBuffer.remaining() > 0) { StompCommand stompCommand = StompCommand.valueOf(command); headerAccessor = StompHeaderAccessor.create(stompCommand); initHeaders(headerAccessor); readHeaders(byteBuffer, headerAccessor); payload = readPayload(byteBuffer, headerAccessor); } if (payload != null) { if (payload.length > 0) { StompCommand stompCommand = headerAccessor.getCommand(); if (stompCommand != null && !stompCommand.isBodyAllowed()) { throw new StompConversionException(stompCommand + " shouldn't have a payload: length=" + payload.length + ", headers=" + headers); } } headerAccessor.updateSimpMessageHeadersFromStompHeaders(); headerAccessor.setLeaveMutable(true); decodedMessage = MessageBuilder.createMessage(payload, headerAccessor.getMessageHeaders()); if (logger.isTraceEnabled()) { logger.trace("Decoded " + headerAccessor.getDetailedLogMessage(payload)); } } else { logger.trace("Incomplete frame, resetting input buffer..."); if (headers != null && headerAccessor != null) { String name = NativeMessageHeaderAccessor.NATIVE_HEADERS; @SuppressWarnings("unchecked") MultiValueMap<String, String> map = (MultiValueMap<String, String>) headerAccessor .getHeader(name); if (map != null) { headers.putAll(map); } } buffer.reset(); } } else { StompHeaderAccessor headerAccessor = StompHeaderAccessor.createForHeartbeat(); initHeaders(headerAccessor); headerAccessor.setLeaveMutable(true); decodedMessage = MessageBuilder.createMessage(HEARTBEAT_PAYLOAD, headerAccessor.getMessageHeaders()); if (logger.isTraceEnabled()) { logger.trace("Decoded " + headerAccessor.getDetailedLogMessage(null)); } } return decodedMessage; }
From source file:org.springframework.web.socket.messaging.StompSubProtocolHandler.java
/** * The simple broker produces {@code SimpMessageType.CONNECT_ACK} that's not STOMP * specific and needs to be turned into a STOMP CONNECTED frame. *//*from ww w. jav a 2 s . co m*/ private StompHeaderAccessor convertConnectAcktoStompConnected(StompHeaderAccessor connectAckHeaders) { String name = StompHeaderAccessor.CONNECT_MESSAGE_HEADER; Message<?> message = (Message<?>) connectAckHeaders.getHeader(name); if (message == null) { throw new IllegalStateException("Original STOMP CONNECT not found in " + connectAckHeaders); } StompHeaderAccessor connectHeaders = MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor.class); StompHeaderAccessor connectedHeaders = StompHeaderAccessor.create(StompCommand.CONNECTED); if (connectHeaders != null) { Set<String> acceptVersions = connectHeaders.getAcceptVersion(); if (acceptVersions.contains("1.2")) { connectedHeaders.setVersion("1.2"); } else if (acceptVersions.contains("1.1")) { connectedHeaders.setVersion("1.1"); } else if (!acceptVersions.isEmpty()) { throw new IllegalArgumentException("Unsupported STOMP version '" + acceptVersions + "'"); } } long[] heartbeat = (long[]) connectAckHeaders.getHeader(SimpMessageHeaderAccessor.HEART_BEAT_HEADER); if (heartbeat != null) { connectedHeaders.setHeartbeat(heartbeat[0], heartbeat[1]); } else { connectedHeaders.setHeartbeat(0, 0); } return connectedHeaders; }