I am running Red Hat Linux version 7.2, Apache version 2.4.6, Java JDK 1.8.0_65, Tomcat version 9.0.0.M1, Tomcat connector version 1.2.5, and have uncommented the HTTP/2 Connector lines in the Tomcat server.xml file. When I run the configure command for the Tomcat connector, I get the message:
checking OpenSSL library version >= 1.0.2... Found OPENSSL_VERSION_NUMBER 0x1000105f (OpenSSL 1.0.1e 11 Feb 2013) Require OPENSSL_VERSION_NUMBER 0x1000200f or greater (1.0.2) Per Red Hat (https://access.redhat.com/articles/1384453), they consider OpenSSL version 1.0.2 to have security issues, and so are not issuing that version. To be able to configure and make the tcnative library, I run the configure command as such: ./configure --with-apr=/usr/bin/apr-1-config --with-java-home=$JAVA_HOME --prefix=$CATALINA_HOME --disable-openssl-version-check --with-ssl=yes I am able to make and install the library, but when I run the Tomcat configtest I get: INFO: Initializing ProtocolHandler ["https-apr-8443"] /usr/java/jdk1.8.0_65/bin/java: symbol lookup error: /home/tomcat/apache-tomcat-9.0.0.M1-src/output/build/lib/libtcnative-1.so.0.2.5: undefined symbol: SSL_CTX_set_alpn_select_cb Configuration error detected! Is there a way to get around or define this symbol? Should I investigate the use of older versions of Tomcat, Java, and Tomcat connector? Should I not use APR with Tomcat (and then use HTTP/1.1)? Should I abandon the RedHat Apache software and use the latest Apache from apache.org? Thanks, Mike
