commit 66c7577c014fb2e61f56a97fa199be1b4bc3590d
author Ruslan Ermilov <ru@nginx.com> Thu Jan 22 16:23:32 2015 +0300
committer Ruslan Ermilov <ru@nginx.com> Thu Jan 22 16:23:32 2015 +0300
tree d8907cd645291b3f3db67b993a841754cec698ca
parent dff999418932fa73ef5e1bbdfcd0e9d4370f7763

Upstream: detect port absence in fastcgi_pass with IP literal.

If fastcgi_pass (or any look-alike that doesn't imply a default
port) is specified as an IP literal (as opposed to a hostname),
port absence was not detected at configuration time and could
result in EADDRNOTAVAIL at run time.

Fixed this in such a way that configs like

http {
    server {
        location / {
            fastcgi_pass 127.0.0.1;
        }
    }

    upstream 127.0.0.1 {
        server 10.0.0.1:12345;
    }
}

still work.  That is, port absence check is delayed until after
we make sure there's no explicit upstream with such a name.