Solve the incompatibility between Selenium and firefox browser version

Because an error is reported when opening the firefox browser with Java

org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms

I checked online and said it was a compatibility issue

Then start looking for records that match the selenium version with the corresponding firefox version

The download address of each firefox version

http://ftp.mozilla.org/pub/firefox/releases/

The download address of each selenium jar package

http://selenium-release.storage.googleapis.com/index.html

In the selenium download page  http://www.seleniumhq.org/download/  (requires FQ) in the changelog of each version, the supported firefox version will be recorded, as follows:

The corresponding records can be found inside, and you can read them carefully.

The first match I picked

v2.53.1
=======

Firefox:
    * Update to allow use with Firefox 47.0.1


selenium-server-standalone-2.53.1.jar
firefox47