Re: Using net/HTTP - How to login and then retrieve data?

On Jan 21, 2011, at 2:20 PM, Bob C. wrote:

> I'm new to Ruby, coming from Java. I need to write an HTTP client in
> Ruby. I'm working in a Windows environment with Ruby 1.8 and RubyMine.
>
> I've been working with net/http, and have written the code below, to
> login to an HTTP server, then issue a POST to pull over some data, and
> then logout. I can successfully Login, but the subsequent POST returns
> an error indicating that I have Invalid Username/Password. I am also  
> new
> to HTTP processing, so I am not sure of the sequence of events that  
> need
> to take place for a successful Login-POST-Logout.
>
> Please review my code and let me know what I need to do for the POST  
> to
> work.
>
> Thanks!
>
> --Bob
>
> require 'net/http'
>
> #LOGIN
> url1 =
> URI.parse('http://imls.rets.fnismls.com/rets/fnisrets.aspx/imls/ 
> login')
> req = Net::HTTP::Get.new(url1.path)
> req.basic_auth 'myuser', 'mypass'

Do you need to also set .basic_auth on the POST request?
Do you need to store a cookie? (In which case, you might prefer using  
httpclient gem rather than net/http directly.)

You can also do:

     http = Net::HTTP.new(url.host, url.port)
     http.read_timeout = 120
     if url.scheme == 'https' || url.port == 443
       http.use_ssl = true
       http.verify_mode = OpenSSL::SSL::VERIFY_NONE
       http.timeout = 120
     end
     http.start do |connection|
       request = Net::HTTP::Post.new(url.request_uri)
       request.basic_auth 'user', 'password'

       request.body = 'something if needed'

       response = connection.request(request)

       # do other stuff with the same connection...
     end


> req.set_form_data({"RETS-Version" => "RETS/1.7", 'Accept' => '*/*',
> 'User-Agent' => 'Mozilla/4.0'})
> res1 = Net::HTTP.start(url1.host, url1.port) {|http|  
> http.request(req)}
> puts res1.body  # This returns a 200 response and a listing of methods
> that can be called, therefore this Login snippet works
>
> #POST
> url2Str = 'http://imls.rets.fnismls.com/rets/fnisrets.aspx/imls/ 
> search'
> url2 = URI.parse(url2Str)
> path = 'http://imls.rets.fnismls.com/rets/fnisrets.aspx/imls/search'
> http = Net::HTTP.new(url2.host, 80)
> data =
> 'SearchType=Property&Limit=15000&Format=COMPACT&Query=%28L_UpdateDate 
> %3D2011-01-03T23:49:57%2B%29,%28L_UpdateDate%3D2011-01-04T23:49:57%2D 
> %29&Class=BC_4'
> headers = {
>  'Accept' => '*/*',
>  'User-Agent' => 'Mozilla/4.0',
>  'RETS-Version' => 'RETS/1.7'
> }
> res2 = http.post(url2Str, data, headers)
> puts res2.body  # This returns error <Net::HTTPUnauthorized 401  
> Invalid
> Username/Password combination readbody=true>
>
> #LOGOUT
> url3 =
> URI.parse('http://imls.rets.fnismls.com/rets/fnisrets.aspx/imls/logout')
> req = Net::HTTP::Get.new(url3.path)
> req.basic_auth 'myuser', 'mypass'
> req.set_form_data({"RETS-Version" => "RETS/1.7", 'Accept' => '*/*',
> 'User-Agent' => 'Mozilla/4.0'})
> res3 = Net::HTTP.start(url3.host, url3.port) {|http|  
> http.request(req)}
> puts res3.body  # This returns a 200 response
>
> -- 
> Posted via http://www.ruby-forum.com/.
>

Rob Biedenharn		
[e-mail]	http://AgileConsultingLLC.com/
[e-mail]		http://GaslightSoftware.com/