브라우저에서 웹소켓으로 연결을 시도하면 에러가 나는데 어떻게 해결하면 되나요?

Question

로컬에서 테스트할때는 아무 문제없이 잘~~~ 돌아갔는데 서버에 올리니깐 에러납니다. 웹소켓을 톰캣이 시작될때 열리고 [ Websocket START ]라는 문구를 확인했습니다.그런데 브라우저를 통해서 클라이언트와 서버와의 연결을 시도하면 아래의 에러가 납니다. 06-Jul-2016 09:09:24.315 SEVERE [ajp-nio-8009-exec-10] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [action] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.socket.server.HandshakeFailureException: Uncaught failure for request http://서버IP:80/websocket/cti; nested exception is java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol] with root cause java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol at org.apache.coyote.ajp.AbstractAjpProcessor.action(AbstractAjpProcessor.java:615) at org.apache.coyote.Request.action(Request.java:380) at org.apache.catalina.connector.Request.upgrade(Request.java:1905) at org.apache.catalina.connector.RequestFacade.upgrade(RequestFacade.java:1114) at javax.servlet.http.HttpServletRequestWrapper.upgrade(HttpServletRequestWrapper.java:376) at org.apache.tomcat.websocket.server.UpgradeUtil.doUpgrade(UpgradeUtil.java:234) at org.apache.tomcat.websocket.server.WsServerContainer.doUpgrade(WsServerContainer.java:335) at org.springframework.web.socket.server.standard.TomcatRequestUpgradeStrategy.upgradeInternal(TomcatRequestUpgradeStrategy.java:78) at org.springframework.web.socket.server.standard.AbstractStandardUpgradeStrategy.upgrade(AbstractStandardUpgradeStrategy.java:105) at org.springframework.web.socket.server.support.DefaultHandshakeHandler.doHandshake(DefaultHandshakeHandler.java:206) at org.springframework.web.socket.server.support.WebSocketHttpRequestHandler.handleRequest(WebSocketHttpRequestHandler.java:120) at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:51) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.sitemesh.webapp.contentfilter.ContentBufferingFilter.bufferAndPostProcess(ContentBufferingFilter.java:169) at org.sitemesh.webapp.contentfilter.ContentBufferingFilter.doFilter(ContentBufferingFilter.java:126) at org.sitemesh.config.ConfigurableSiteMeshFilter.doFilter(ConfigurableSiteMeshFilter.java:163) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522) at org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:868) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) 소스는 아래와 같습니다. public class WebsocketHandler extends TextWebSocketHandler { static Map hm = new HashMap(); public WebsocketHandler() { System.out.println("[ Websocket START ]"); } @Override public void afterConnectionEstablished(WebSocketSession session) throws Exception, UnsupportedOperationException { hm.put(session.getId(), session); System.out.println("웹소켓 서버와 클라이언트 연결됨"); } @Override public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception, UnsupportedOperationException { hm.remove(session); System.out.println("웹소켓 서버와 클라이언트 연결해지"); } @Override public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception { logger.info("handleTransportError : {} {} ", session, exception); System.out.println("웹소켓 handleTransportError : "); exception.printStackTrace(); } @Override protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception { String msg = message.toString(); session.sendMessage(new TextMessage("받은내용을 WEBSOCKET으로 되돌려주기 : "+ msg)); // 자기가 보낸 메시지를 그대로 돌려받아 출력하는 형태 }} 로컬에서 잘되는게 서버에 올라가면 안되는건지.... 서버측에서 뭔가 설정을 해야되는게 있는건가요? 아시는 분 답변 좀 부탁드립니다.

icksss · Accepted Answer

로컬 구성은 tomcat 이고..서버 구성은 apache&#43;tomcat 인거 같은데요..websockt 프로토콜 처리를 못하는것 같습니다. 때문에 HTTP upgrade 라고 나오는듯 하네요.

더미 · Answer

HTTP upgrade is not supported by the AJP protocol

항상초보 · Answer

구글링에서 찾은http://stackoverflow.com/questions/30667429/websockets-through-apache-and-tomcat-http-upgrade-is-not-supported-by-the-ajp-p를 봤는데 Apache설정을 고쳐야되는걸로 나오던데요.다른 사람이 설치한 서버(웹소켓을 사용하고 있는 서버)의 httpd.conf파일과 sever.xml파일에서는 딱히 설정이 변경된 부분이 없던데.. apache나 tomcat버젼 때문인건가요??

더미 · Answer

당연히 버전부터 보셔야죠.

브라우저에서 웹소켓으로 연결을 시도하면 에러가 나는데 어떻게 해결하면 되나요?

4개의 답변

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