Spring boot 1.4.2 with Tomcat 8.5.8 crashes, port already in use. Works fine with Tomcat 8.5.6 -

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i've got 2 relatively simple spring boot apps. both use tomcat 8.5.6 spring boot 1.4.2. , work fine.

for grins , giggles, changed tomcat version latest version in tree, 8.5.8.

now, neither app starts. "port 8080 in use". somehow, spring boot seems start port 8080 twice (or not catching fact has started , tries again).

any ideas?

the problem caused tomcat team refactoring embedded startup in way broke spring boot.

it's fixed in tomcat 8.5.9


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