Correct, I tested it:
Tested with HTTP connector
<Connector port="8080"
protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443"
maxParameterCount="1000"
/>
and it loaded Native 1:
14:41:48.471 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#lifecycleEvent) Loaded Apache
Tomcat Native library [1.3.1] using APR version [1.7.4].
14:41:48.471 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#lifecycleEvent) APR
capabilities: IPv6 [true], sendfile [true], accept filters [false], random
[true], UDS [true].
14:41:48.471 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#lifecycleEvent) APR/OpenSSL
configuration: useAprConnector [false], useOpenSSL [true]
14:41:48.489 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#initializeSSL) OpenSSL
successfully initialized [OpenSSL 3.0.14 4 Jun 2024]
Then changed protocol
protocol="org.apache.coyote.http11.Http11NioProtocol"
but it still loaded only Native 1.
Then renamed tcnative-1.dll so that Tomcat does not find it.
Then it loaded Native 2:
14:55:32.002 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#lifecycleEvent) Loaded Apache
Tomcat Native library [2.0.9] using APR version [1.7.6].
14:55:32.002 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#lifecycleEvent) APR
capabilities: IPv6 [true], sendfile [true], accept filters [false], random
[true], UDS [true].
14:55:32.002 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#lifecycleEvent) APR/OpenSSL
configuration: useAprConnector [false], useOpenSSL [true]
14:55:32.021 INF> (main)
(org.apache.catalina.core.AprLifecycleListener#initializeSSL) OpenSSL
successfully initialized [OpenSSL 3.5.0 8 Apr 2025]
-Harri
-----Original Message-----
From: Mark Thomas <[email protected]>
Sent: perjantai 12. syyskuuta 2025 17.47
To: [email protected]
Subject: Re: Tomcat Native 1.3.1 vs 2.0.9
On 12/09/2025 15:33, Harri Pesonen wrote:
> Thanks, currently we have option to use APR but NIO is the default.
> Perhaps we drop APR and then switch to Tomcat Native 2.
>
> What if we have both tcnative-1.dll and tcnative-2.dll available, I
> guess that Tomcat will use tcnative-2.dll with NIO and tcnative-1.dll
> with APR ? 😊
You can only load one version of Tomcat Native into the JVM at any one time. If
both are present, 1.x is used in preference to 2.x.
Mark
>
> -Harri
>
> -----Original Message-----
> From: Mark Thomas <[email protected]>
> Sent: perjantai 12. syyskuuta 2025 15.17
> To: Tomcat Users List <[email protected]>
> Subject: Re: Tomcat Native 1.3.1 vs 2.0.9
>
> On 12/09/2025 12:06, Harri Pesonen wrote:
>> Hello,
>>
>> download page for Tomcat Native has two versions, 2.0.9 and 1.3.1:
>>
>> https://tomc/
>> at.apache.org%2Fdownload-native.cgi&data=05%7C02%7Charri.pesonen%40si
>> n
>> ch.com%7C1228e855b1974189438508ddf1f6e623%7C3b518aae89214a7b8497619d7
>> 5
>> 6ce20e%7C0%7C0%7C638932764925647778%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0e
>> U
>> 1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIld
>> U
>> IjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=plWNOFB8KZmjPF5SgY9wB3hlSP2BVbVuWr8xc
>> n
>> 5IYmM%3D&reserved=0
>>
>> We are currently using 1.3.1 and there has not been so many changes lately,
>> compare to version 2.
>> I fail to find documentation for why one should use one or other, what is
>> the difference between these two versions?
>
> The change log would be a good place to start:
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftomc
> at.apache.org%2Fnative-doc%2Fmiscellaneous%2Fchangelog.html&data=05%7C
> 02%7Charri.pesonen%40sinch.com%7Ce179de03ec4a4a9592c608ddf20ba678%7C3b
> 518aae89214a7b8497619d756ce20e%7C0%7C0%7C638932854046978831%7CUnknown%
> 7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4z
> MiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=R9FXJ9C49%2B%2
> BXLA7af10wzmn4ApRM%2BgD8YmiaxNyPH4c%3D&reserved=0
>
> The 2.0.0 entry describes what was removed/changed between 1.3.1 and
> 2.0.0
>
>> Can I simply drop version 2 in place of version 1?
>> The DLL names are different, 1.3.1 is tcnative-1.dll while 2.0.9 is
>> tcnative-2.dll.
>
> If you want to use one of the APR connectors, you need to use 1.3.x.
>
> If you use NIO (or NIO2) with OpenSSL then 2.x is fine.
>
> Note: Tomcat is moving towards just supporting NIO (no NIO2, no APR) for HTTP
> and AJP with OpenSSL support via Tomcat Native as an option for HTTP.
>
> Mark
>
>
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