-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 David,
On 3/4/14, 10:47 AM, David kerber wrote: > On 3/4/2014 10:34 AM, André Warnier wrote: >> David kerber wrote: >>> I am running several instances of TC 7 as services on a Windows >>> Server 2008 R2. Each instance has its own set of ports, and I >>> have both the data port and shutdown ports configured in >>> server.xml. They are currently running only HTTP. >>> >>> My questions: >>> >>> 1. Does the shutdown port serve any purpose on a windows >>> service installation? I thought I had read that it did not, >>> but some searching didn't turn up a definitive answer. >> >> I don't really know either, but just for the fun of it, let's >> proceed by logical induction. >> >> In a Windows Service scenario, the JVM that runs Tomcat, itself >> runs under a "wrapper" (tomcatX.exe). That wrapper is a generic >> program for Java processes, and has no particular knowledge of >> Tomcat. But it is that wrapper which would get the Windows >> message "Stop Service", and would have to forward this to the JVM >> in some way, to ask the JVM itself to exit. The JVM has no >> specific knowledge of Tomcat either, nor of its shutdown port and >> what it is there for. So if the JVM must stop Tomcat before >> stopping itself, it must be doing it via another way. My guess >> would thus be that Tomcat inserts some "callback hook" in the >> JVM, so that it is notified when the JVM has been asked to stop >> itself. > > Shutdown hook, maybe? I just used my first one yesterday in a > cmd-line java app... > > >> And when this callback is called by the JVM, Tomcat initiates its >> own shutdown. And when this callback returns, the JVM proceeds >> to shut itself down (or Tomcat just does a system.exit()). And >> when that is done, the wrapper knows and can tell Windows that >> the Service is shut down, and then exit itself. > > That was my reasoning as well, but I'm not as well-versed in this > stuff as I would like to be. > > >> >> Conclusion : no, the Tomcat shutdown port is not used when >> running as a Windows Service. >> >> Now the question is : if you do not specify a shutdown port, does >> Tomcat nevertheless set one up by default ? > > That's what I was hoping Mark, Chuck or one of the other > committers could answer definitively. If you use "-1" as the shutdown port, it will be entirely disabled. Come on, guys.. that's right in the documentation ;) >>> 2. I may need to start using HTTPS for my data transfer for at >>> least one of the instances. If that instance is going to allow >>> only HTTPS (and not HTTP), can I just make the current HTTP >>> port into HTTPS? >> >> I cannot think of why not. You can comment out the HTTP >> Connector, and just leave the HTTPS Connector (and change its >> port). > > That's what I thought. There's nothing magical about port numbers: you can use them for whatever you want. Most people expect HTTP to be available on 80 and HTTPS to be available on 443. But if you have a reverse proxy somewhere that uses those standard ports, you can use 1234 for HTTP and 559 for HTTPS or whatever. Or 16234. Your choice. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTFiTHAAoJEBzwKT+lPKRYA/YP/i6Gn01NPI2+hKp6Q81Cc/80 jC/mLqEtLKPsb8d2bo79JFx4iV3zX0JJNGzOToISZisHxAvg+iZmIb1WLeVN4bK/ x56UT21ZahXnQt3tcpgxuLDySxH7Kn9qM3MSpdJrkTki8ukZIbbkiOadM55ieekS uMu30qc2ivEZ4Iodd1Yyxg7Y+uzebsXlWYlnr8eno4Ph/v1Cf8z+nZTGXdjWF7f8 xMO55s/W4n1vpNRzLAv8mk1lJ5ThZwMjuQg2GyBEJK4gaWzxyQ4QrbWsAx1juKt5 zcNI9DQJMJQGOXNLB6MdiD5kXOhgGOU1j1WTFcAm/+v83gNukQYQv/X5m5Cwp6VW X8Vzgv4BTlCPAxsd1YgsXCUrFm696pU5zSA3wWyTkvzfxJpVBfOyesQ2P+5aV7kk +jxShzcbaK6yXISwPr7PWyo9oSxLmMbnNpGZAXsAm7wOHQUZnNygNOFBsaxDQvs/ bgI8Dz/4a8duwTyb9hiNn3Xr/KPh5359nMX8sfKX7vm1IjkKuLDeFYbp1EB0jnw2 KOS54lGNxdMJ62q9hzdBoztPDJnjcOnovheudHMX3blYla6ouRAueb3QrLopF1NT SJ0fC2rEhohmSO8yROcXdkv0PVTWljWrSUKCXJ5Cj0SGqhj9YlYCKnXQ/qjTy0CX C6MtQ2ltCH7uZDMjl23b =3gTs -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
