Disabling Naggle's algorithm / Setting tcpNoDelay programatically for web sockets
Hi, As per tomcat's performance tuning doc, 'tcpNoDelay' can be enabled/disabled at connector level. Is there a programmatic way to set 'tcpNoDelay' to true for web socket connections ? I am using tomcat's proprietary web socket APIs in my application. I have gone though the API documentation of tomcat's proprietary web socket implementation, I didn't see any API which allows application to override the 'tcpNoDelay' value. As per doc for writeTextMessage(CharBuffer msgCb) of 'WsOutbound', for each write, tomcat flushes the socket buffer and sends the new frame with the buffer passed. Does that mean, flushing of socket buffer gives the same effect of disabling naggle's algorithm ? Thanks, Ganesh
Re: WebSocket: Special character escaping
Thanks Mark. Sample web socket chat helped to identify the problem. In fact, problem was there in one of third-party lib I used and also, in log4j config. The log4j was configured with non-utf encoding scheme. That's why raw web socket messages were getting printed wrongly in log file. I solved the issue by putting UTF-8 escaping to special characters. Regards, Ganesh On Wed, May 13, 2015 at 4:27 PM, Mark Thomas ma...@apache.org wrote: On 13/05/2015 11:44, Ganesh Bms wrote: Sorry .. correction to line: The text that my client sends is Test701á. Server received is SIP701?. Actual: The text that my client sends is Test701á. Server received is Test701?. Lots of places this could go wrong. You need to make sure that everything is using UTF-8 everywhere. I'd check these first: - The client is sending the text encoding using UTF-8 - Your server application is displaying the received String using UTF-8 You can see if Tomcat handles this correctly by using the WebSocket chat example and sending special characters. Mark On Wed, May 13, 2015 at 3:33 PM, Ganesh Bms gbmsat...@gmail.com wrote: Hi, I have written a web socket server using web socket API(JSR-356) and which runs on tomcat version 7.0.56. My test client sends some text which has some special characters over web socket connection to my server. the problem is that server is not getting the client's text as it is. the special character got modified to ?. The text that my client sends is Test701á. Server received is SIP701?. At server, I have just attached Text message handler to web socket session. This works fine with tomcat version 7.0.55. Please let me know if i am missing something here. Thank you, ganesh - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
WebSocket: Special character escaping
Hi, I have written a web socket server using web socket API(JSR-356) and which runs on tomcat version 7.0.56. My test client sends some text which has some special characters over web socket connection to my server. the problem is that server is not getting the client's text as it is. the special character got modified to ?. The text that my client sends is Test701á. Server received is SIP701?. At server, I have just attached Text message handler to web socket session. This works fine with tomcat version 7.0.55. Please let me know if i am missing something here. Thank you, ganesh
Re: WebSocket: Special character escaping
Sorry .. correction to line: The text that my client sends is Test701á. Server received is SIP701?. Actual: The text that my client sends is Test701á. Server received is Test701?. On Wed, May 13, 2015 at 3:33 PM, Ganesh Bms gbmsat...@gmail.com wrote: Hi, I have written a web socket server using web socket API(JSR-356) and which runs on tomcat version 7.0.56. My test client sends some text which has some special characters over web socket connection to my server. the problem is that server is not getting the client's text as it is. the special character got modified to ?. The text that my client sends is Test701á. Server received is SIP701?. At server, I have just attached Text message handler to web socket session. This works fine with tomcat version 7.0.55. Please let me know if i am missing something here. Thank you, ganesh
Re: How does Tomcat identify web socket endpoint in a war?
I think, yes. That's why I went for programmatic endpoint. On Fri, Apr 24, 2015 at 4:55 PM, Thusitha Thilina Dayaratne thusithathil...@gmail.com wrote: Hi, Could someone tell me how does Tomcat identify the websocket endpoints in .war file? Does it scan all the classes and looks for annotations? Thanks Best Regards --
Fwd: Web socket connection getting dropped
Hi folks, I am facing an issue with tomcat's proprietary web socket API. I have implemented web socket server application using tomcat's proprietary APIs. The web socket connections are getting dropped after 2-3 hours of idle. The tomcat is not even notifying my app about this disconnection. The exception I am seeing in tomcat's catalina logs is as below: java.net.SocketException: Connection timed out at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113) at java.net.SocketOutputStream.write(SocketOutputStream.java:159) at sun.security.ssl.OutputRecord.writeBuffer(OutputRecord.java:377) at sun.security.ssl.OutputRecord.write(OutputRecord.java:363) at sun.security.ssl.SSLSocketImpl.writeRecordInternal(SSLSocketImpl.java:830) at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:801) at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:122) at org.apache.coyote.http11.upgrade.UpgradeBioProcessor.write(UpgradeBioProcessor.java:67) at org.apache.coyote.http11.upgrade.UpgradeOutbound.write(UpgradeOutbound.java:49) at org.apache.catalina.websocket.WsOutbound.doWriteBytes(WsOutbound.java:499) at org.apache.catalina.websocket.WsOutbound.doWriteText(WsOutbound.java:529) at org.apache.catalina.websocket.WsOutbound.writeTextMessage(WsOutbound.java:221) Please help me in identifying the reason behind this behaviour. Thanks, Ganesh
