I don't know what you made you think that some methods aren't accepted, but testing shows DELETE is accepted 

$ perl -MHTTP::Request -e'
    print HTTP::Request->new( DELETE => "http://..." )->as_string
'
DELETE http://...

[download]

In reply to Re^3: How to control input of an external program? by ikegami
in thread How to control input of an external program? by klactose

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