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Yesterday we got a user to use F12 tools to record the network session traffic of our page in IE11 and Chrome, and save it to HAR files.

This revealed a problem with the http proxy that the government department used, when they were blaming our system.

A government department will not install tcpdump for you. They might be actively unhelpful if their IT team is run by a BOFH.

This problem had to be debugged from the client, the server comms show no problem.

The more the browser can help me solve real life communication issues, the happier we are (and our users are!)



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