// our connection coalescing requirements are met. See also:
    // https://hpbn.co/optimizing-application-delivery/#eliminate-domain-sharding
    // https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/

    // 1. This connection must be HTTP/2.
    if (http2Connection == null) return false

    // 2. The routes must share an IP address.

http:foo.com  s:http h:example.org p:/foo/foo.com
\t\s\s\s:foo.com\s\s\s\n  s:http h:example.org p:/foo/:foo.com
\sfoo.com\s\s  s:http h:example.org p:/foo/foo.com
a:\t\sfoo.com  s:a p:\sfoo.com
http://f:21/\sb\s?\sd\s#\se\s  s:http h:f port:21 p:/%20b%20 q:?%20d%20 f:#\se
http://f:/c  s:http h:f p:/c
http://f:0/c  s:http h:f port:0 p:/c
http://f:00000000000000/c  s:http h:f port:0 p:/c
http://f:00000000000000000000080/c  s:http h:f p:/c
http://f:b/c
http://f:\s/c

tv.sd
gov.sd
info.sd

// se : https://en.wikipedia.org/wiki/.se
// Submitted by registry <patrik.wallstrom@iis.se>
se
a.se
ac.se
b.se
bd.se
brand.se
c.se
d.se
e.se
f.se
fh.se
fhsk.se
fhv.se
g.se
h.se
i.se
k.se
komforb.se
kommunalforbund.se
komvux.se
l.se
lanbib.se
m.se
n.se
naturbruksgymn.se
o.se
org.se

32DC          ; mapped                 ; 30B9          # 1.1  CIRCLED KATAKANA SU
32DD          ; mapped                 ; 30BB          # 1.1  CIRCLED KATAKANA SE
32DE          ; mapped                 ; 30BD          # 1.1  CIRCLED KATAKANA SO
32DF          ; mapped                 ; 30BF          # 1.1  CIRCLED KATAKANA TA