Only one usage of each socket address (protocol/network address/port) is normally permitted while tomcat start?

问题:

Here is my connector element in server.xml. I also tried using 8443 instead of 8484 but same error.

<Connector    SSLEnabled="true"    acceptCount="100"    connectionTimeout="20000"    executor="tomcatThreadPool"    keystoreFile="D:/.keystore"    keystorePass="changeit"    maxKeepAliveRequests="15"    port="8484"    protocol="HTTP/1.1"    redirectPort="8484"    scheme="https"    secure="true"    allowUnsafeLegacyRenegotiation="true"/>    SEVERE: Error starting endpoint java.lang.Exception: Socket bind failed: [730048] Only one usage of each socket address (protocol/network address/port) is normally permitted.       at org.apache.tomcat.util.net.AprEndpoint.init(AprEndpoint.java:649)     at org.apache.tomcat.util.net.AprEndpoint.start(AprEndpoint.java:766)     at org.apache.coyote.http11.Http11AprProtocol.start(Http11AprProtocol.java:137)     at org.apache.catalina.connector.Connector.start(Connector.java:1122)     at org.apache.catalina.core.StandardService.start(StandardService.java:540)     at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)     at org.apache.catalina.startup.Catalina.start(Catalina.java:595)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:606)     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)  Jan 23, 2014 10:05:26 AM org.apache.catalina.core.StandardService start SEVERE: Failed to start connector [Connector[HTTP/1.1-8484]] LifecycleException:  service.getName(): "Catalina";  Protocol handler start failed: java.lang.Exception: Socket bind failed: [730048] Only one usage of each socket address (protocol/network address/port) is normally permitted.       at org.apache.catalina.connector.Connector.start(Connector.java:1129)     at org.apache.catalina.core.StandardService.start(StandardService.java:540)     at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)     at org.apache.catalina.startup.Catalina.start(Catalina.java:595)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:606)     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) 

i am sure no other app is using ports(8484 or 8443) as verified with Tomcat start up error. i am not sure what is the actual cause ?

回答1:

port="8484"  ... redirectPort="8484"  

You're attempting to open two listening sockets on the same port.

The redirectPort is for:

If this Connector is supporting non-SSL requests, and a request is received for which a matching <security-constraint> requires SSL transport, Catalina will automatically redirect the request to the port number specified here.

It would need to be a different port than the one specified by port

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