def set_cookie_header!(header, key, value)
case value
when Hash
domain = "; domain=" + value[:domain] if value[:domain]
path = "; path=" + value[:path] if value[:path]
expires = "; expires=" +
rfc2822(value[:expires].clone.gmtime) if value[:expires]
secure = "; secure" if value[:secure]
httponly = "; HttpOnly" if value[:httponly]
value = value[:value]
end
value = [value] unless Array === value
cookie = escape(key) + "=" +
value.map { |v| escape v }.join("&") +
"#{domain}#{path}#{expires}#{secure}#{httponly}"
case header["Set-Cookie"]
when nil, ''
header["Set-Cookie"] = cookie
when String
header["Set-Cookie"] = [header["Set-Cookie"], cookie].join("\n")
when Array
header["Set-Cookie"] = (header["Set-Cookie"] + [cookie]).join("\n")
end
nil
end