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Accepted
nathand
Asked: 2011-05-27 12:56:58 +0800 CST

self_url() shows incorrect value when using Apache load balancer and PlackUp

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Apache proxies to a PSGI application using HTTP::Server::PSGI.

apache conf file:

<Proxy balancer://my_cluster>
   BalancerMember http://127.0.0.1:3001
   BalancerMember http://127.0.0.1:3002
   BalancerMember http://127.0.0.1:3003
</Proxy>

ProxyPreserveHost On
ProxyPass /dispatch/ balancer://my_cluster/

The url is going to be: http://foo.com/dispatch/main

after calling $self->query->self_url() I get: http://foo.com/main

/dispatch is cut out every time. I'm not sure what layer is cutting it out or how to get it back.

apache-2.2 perl

1 Answers

  1. Best Answer

    First I needed to set ProxyPreserveHost Off (which is the default)

    Change the entry point for the PSGI app.

    builder {
   return $app;
}

    becomes:

    builder {
   mount "/dispatch" => $app
}

    change the ProxyPass to:

    ProxyPass /dispatch/ balancer://my_cluster/dispatch/

    Now url_self() works as expected.

    • 2