I'm using Rails 3.2.1 to make an HTTP Post.
I need to add X-FORWARDED FOR to the header. How do I do that in Rails?
Code:
post_data = {
"username" => tabuser
}
response = Net::HTTP.post_form(URI.parse("http://<my php file>"), post_data)
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These net::http examples might be helpful? github.com/augustl/net-http-cheat-sheet/blob/master/headers.rbhouse9– house92012-02-16 06:08:58 +00:00Commented Feb 16, 2012 at 6:08
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Thanks! If you want to put that as an answer I'll accept itTyler DeWitt– Tyler DeWitt2012-02-16 17:01:38 +00:00Commented Feb 16, 2012 at 17:01
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added comment as the answer - Cheers!house9– house92012-02-19 02:28:43 +00:00Commented Feb 19, 2012 at 2:28
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4 Answers
I find this more readable
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
stolen from http://www.dzone.com/snippets/send-custom-headers-rub
HOWEVER !!
if you want to send 'Accept' header (Accept: application/json) to Rails application, you cannot do:
req.add_field("Accept", "application/json")
but do:
req['Accept'] = 'application/json'
The reason for this that Rails ignores the Accept header when it contains “,/” or “/,” and returns HTML (which add_field adds). This is due to really old browsers sending incorrect "Accept" headers.
Comments
It can be set on the request object:
request = Post.new(url)
request.form_data = params
request['X-Forwarded-For'] = '203.0.113.195'
request.start(url.hostname, url.port,
:use_ssl => url.scheme == 'https' ) {|http|
http.request(request) }
See these Net::HTTP examples:
https://github.com/augustl/net-http-cheat-sheet/blob/master/headers.rb
2 Comments
Andrew Grimm
Link-only answers are discouraged. You may want to have actual code on how to add headers within the body of the answer.
house9
@AndrewGrimm - my answer is from over 5 years ago. While not perfect it is what it is.
Both answers are ok, but I would add one important thing. If you are using https you must add line that you use ssl:
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)
Without this use_ssl you will get 'EOFError (end of file reached)'.
1 Comment
kraftydevil
This is critical if ssl is required because you can otherwise build a perfect request and still get a '400 Bad Request' response.
The original question was for an http post which is what I was looking for. I'm going to include this solution for others who may be looking:
require 'net/http'
uri = URI.parse("http://<my php file>")
header = {'X-Forwarded-For': '0.0.0.0'}
# Create the HTTP objects
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Post.new(uri.request_uri, header)
# Send the request
response = http.request(request)
