在rails中向请求添加标头

Question

我正在使用Rails 3.2.1制作HTTP Post.

我需要X-FORWARDED在标题中添加FOR.我如何在Rails中做到这一点？

码:

post_data = {
  "username" => tabuser
}

response = Net::HTTP.post_form(URI.parse("http://<my php file>"), post_data)

谢谢

Answer 1

我发现这更具可读性

require "net/http"
require "uri"

url = URI.parse("http://www.whatismyip.com/automation/n09230945.asp")

req = Net::HTTP::Get.new(url.path)
req.add_field("X-Forwarded-For", "0.0.0.0")
req.add_field("Accept", "*/*")

res = Net::HTTP.new(url.host, url.port).start do |http|
  http.request(req)
end

puts res.body

从http://www.dzone.com/snippets/send-custom-headers-rub中窃取

不过!!

如果要将"Accept"header(Accept: application/json)发送到Rails应用程序,则不能执行以下操作:

req.add_field("Accept", "application/json")

但是:

req['Accept'] = 'application/json'

原因是当Rails包含",/"或"/"时忽略Accept标头并返回HTML(add_field添加).这是因为很老的浏览器发送了不正确的"Accept"标头.

Answer 2

这些net :: http示例可能有帮助吗？

https://github.com/augustl/net-http-cheat-sheet/blob/master/headers.rb

Answer 3

两个答案都没问题,但我想补充一点.如果您使用https,则必须添加使用ssl的行:

url = URI.parse('https://someurl.com')
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
req = Net::HTTP::Get.new(url.request_uri)
req["header_name"] = header
response = http.request(req)

如果没有这个use_ssl,你将得到'EOFError(到达文件末尾)'.