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This commit is contained in:
Juergen Hoeller
2015-12-14 00:56:06 +01:00
parent bdb606b8b1
commit 21329df7e1
2 changed files with 18 additions and 9 deletions
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20
spring-websocket/src/main/java/org/springframework/web/socket/messaging/SubProtocolWebSocketHandler.java
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@@ -143,12 +143,14 @@ public class SubProtocolWebSocketHandler
public void addProtocolHandler(SubProtocolHandler handler) {
List<String> protocols = handler.getSupportedProtocols();
if (CollectionUtils.isEmpty(protocols)) {
logger.error("No sub-protocols for " + handler + ".");
if (logger.isErrorEnabled()) {
logger.error("No sub-protocols for " + handler);
}
return;
}
for (String protocol: protocols) {
for (String protocol : protocols) {
SubProtocolHandler replaced = this.protocolHandlerLookup.put(protocol, handler);
if ((replaced != null) && (replaced != handler) ) {
if (replaced != null && replaced != handler) {
throw new IllegalStateException("Can't map " + handler +
" to protocol '" + protocol + "'. Already mapped to " + replaced + ".");
}
@@ -316,9 +318,12 @@ public class SubProtocolWebSocketHandler
public void handleMessage(Message<?> message) throws MessagingException {
String sessionId = resolveSessionId(message);
if (sessionId == null) {
logger.error("Couldn't find sessionId in " + message);
if (logger.isErrorEnabled()) {
logger.error("Couldn't find session id in " + message);
}
return;
}
WebSocketSessionHolder holder = this.sessions.get(sessionId);
if (holder == null) {
if (logger.isDebugEnabled()) {
@@ -327,6 +332,7 @@ public class SubProtocolWebSocketHandler
}
return;
}
WebSocketSession session = holder.getSession();
try {
findProtocolHandler(session).handleMessageToClient(session, message);
@@ -344,9 +350,11 @@ public class SubProtocolWebSocketHandler
logger.debug("Failure while closing session " + sessionId + ".", secondException);
}
}
catch (Exception e) {
catch (Exception ex) {
// Could be part of normal workflow (e.g. browser tab closed)
logger.debug("Failed to send message to client in " + session + ": " + message, e);
if (logger.isDebugEnabled()) {
logger.debug("Failed to send message to client in " + session + ": " + message, ex);
}
}
}