Trying to parse the json string with JSON.parse I get unexpected token error
require "net/http"
require "uri"
url = URI.parse("https://url-goes-here")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
req = Net::HTTP::Get.new(url.request_uri)
req['Accept'] = 'application/json'
res = Net::HTTP.new(url.host, url.port).start do |http|
http.request(req)
end
json = JSON.parse(res)
puts json
Data in response looks like JSONP, rather old method of doing rpc. Instead of returning plain JSON it outputs some_js_callback_function_name({here_goes: the_json}), usually there's also a parameter that controls the function name.
To get json from it - trim the function call before parsing:
json_data = res.body.gsub(/\A[^(]+\(/, '').gsub(/\)\s*\z/, '')
json = JSON.parse(json_data)
Related
Hoping for some help as this one has me baffled...
I created a user account and API credentials at FTX.com.
They have an interesting Auth setup which is detailed here: https://docs.ftx.com/?python#authentication
They only provide code examples for python, javascript and c#, but I need to implement the integration on a RoR app.
Here's a link which also provides an example for both GET and POST calls: https://blog.ftx.com/blog/api-authentication/
I'm using:
ruby '3.0.1'
gem 'rails', '~> 6.1.4', '>= 6.1.4.1'
also,
require 'uri'
require 'net/https'
require 'net/http'
require 'json'
I got the authentication working for GET calls as follows:
def get_market
get_market_url = 'https://ftx.com/api/markets/BTC-PERP/orderbook?depth=20'
api_get_call(get_market_url)
end
def api_get_call(url)
ts = (Time.now.to_f * 1000).to_i
signature_payload = "#{ts}GET/api/markets"
key = ENV['FTX_API_SECRET']
data = signature_payload
digest = OpenSSL::Digest.new('sha256')
signature = OpenSSL::HMAC.hexdigest(digest, key, data)
headers = {
'FTX-KEY': ENV['FTX_API_KEY'],
'FTX-SIGN': signature,
'FTX-TS': ts.to_s
}
uri = URI.parse(url)
http = Net::HTTP.new(uri.host, uri.port)
http.read_timeout = 1200
http.use_ssl = true
rsp = http.get(uri, headers)
JSON.parse(rsp.body)
end
This works great and I get the correct response:
=>
{"success"=>true,
"result"=>
{"bids"=>
[[64326.0, 2.0309],
...
[64303.0, 3.1067]],
"asks"=>
[[64327.0, 4.647],
...
[64352.0, 0.01]]}}
However, I can't seem to authenticate correctly for POST calls (even though as far as I can tell I am following the instructions correctly). I use the following:
def create_subaccount
create_subaccount_url = 'https://ftx.com/api/subaccounts'
call_body =
{
"nickname": "sub2",
}.to_json
api_post_call(create_subaccount_url, call_body)
end
def api_post_call(url, body)
ts = (Time.now.to_f * 1000).to_i
signature_payload = "#{ts}POST/api/subaccounts#{body}"
key = ENV['FTX_API_SECRET']
data = signature_payload
digest = OpenSSL::Digest.new('sha256')
signature = OpenSSL::HMAC.hexdigest(digest, key, data)
headers = {
'FTX-KEY': ENV['FTX_API_KEY'],
'FTX-SIGN': signature,
'FTX-TS': ts.to_s
}
uri = URI.parse(url)
http = Net::HTTP.new(uri.host, uri.port)
http.read_timeout = 1200
http.use_ssl = true
request = Net::HTTP::Post.new(uri, headers)
request.body = body
response = http.request(request)
JSON.parse(response.body)
end
Also tried passing headers via request[] directly:
def api_post_call(url, body)
ts = (Time.now.to_f * 1000).to_i
signature_payload = "#{ts}POST/api/subaccounts#{body}"
key = ENV['FTX_API_SECRET']
data = signature_payload
digest = OpenSSL::Digest.new('sha256')
signature = OpenSSL::HMAC.hexdigest(digest, key, data)
uri = URI.parse(url)
http = Net::HTTP.new(uri.host, uri.port)
http.read_timeout = 1200
http.use_ssl = true
request = Net::HTTP::Post.new(uri)
request['FTX-KEY'] = ENV['FTX_API_KEY']
request['FTX-SIGN'] = signature
request['FTX-TS'] = ts.to_s
request.body = body
response = http.request(request)
JSON.parse(response.body)
end
This is the error response:
=> {"success"=>false, "error"=>"Not logged in: Invalid signature"}
My feeling is the issue is somewhere in adding the body to signature_payload before generating the signature via HMAC here..?:
signature_payload = "#{ts}POST/api/subaccounts#{body}"
Thinking this because, if I leave out #{body} here, like so:
signature_payload = "#{ts}POST/api/subaccounts"
the response is:
=> {"success"=>false, "error"=>"Missing parameter nickname"}
I have tried several iterations of setting up the POST call method using various different net/https examples but have had no luck...
I have also contacted FTX support but have had no response.
Would truly appreciate if anyone has some insight on what I am doing wrong here?
try this headers
headers = {
'FTX-KEY': ENV['FTX_API_KEY'],
'FTX-SIGN': signature,
'FTX-TS': ts.to_s,
'Content-Type' => 'application/json',
'Accepts' => 'application/json',
}
Here's a working example of a class to retrieve FTX subaccounts. Modify for your own purposes. I use HTTParty.
class Balancer
require 'uri'
require "openssl"
include HTTParty
def get_ftx_subaccounts
method = 'GET'
path = '/subaccounts'
url = "#{ENV['FTX_BASE_URL']}#{path}"
return HTTParty.get(url, headers: headers(method, path, ''))
end
def headers(*args)
{
'FTX-KEY' => ENV['FTX_API_KEY'],
'FTX-SIGN' => signature(*args),
'FTX-TS' => ts.to_s,
'Content-Type' => 'application/json',
'Accepts' => 'application/json',
}
end
def signature(*args)
OpenSSL::HMAC.hexdigest(digest, ENV['FTX_API_SECRET'], signature_payload(*args))
end
def signature_payload(method, path, query)
payload = [ts, method.to_s.upcase, "/api", path].compact
if method==:post
payload << query.to_json
elsif method==:get
payload << ("?" + URI.encode_www_form(query))
end unless query.empty?
payload.join.encode("UTF-8")
end
def ts
#ts ||= (Time.now.to_f * 1000).to_i
end
def digest
#digest ||= OpenSSL::Digest.new('sha256')
end
end
In Ruby 2.0.0p195, Rails 4.0.0, Net::HTTP::Post.new request returns empty body of response.
#toSend = {
"zuppler_store_id" => 'X3r82l89',
"user_id" => '1'
}.to_json
uri = URI("http://smoothpay.com/zuppler/gen_token_post.php")
http = Net::HTTP.new(uri.host,uri.port)
req = Net::HTTP::Post.new uri
req.content_type = "application/json"
req.body = #toSend # or "[ #{#toSend} ]" ?
res = Net::HTTP.start(uri.host, uri.port) {|http| http.request(req)}
puts "Response #{res.code} - #{res.message}: #{res.body}"
This code returns "Response 200 - OK:"
But it should return like this: {"result":"success","token":"843e5be88fb8cee7d324244929177b4e"}
You can check it by typing this url:
http://smoothpay.com/zuppler/gen_token_test.php
Why is res.body empty?
Seems like that service doesn't like the POST request to be application/json.
This works:
uri = URI("http://smoothpay.com/zuppler/gen_token_post.php")
http = Net::HTTP.new(uri.host,uri.port)
req = Net::HTTP::Post.new uri
req.body = "zuppler_store_id=X3r82l89&user_id=1"
res = Net::HTTP.start(uri.host, uri.port) {|http| http.request(req)}
res.body # => "{\"result\":\"success\",\"token\":\"9502e49d454ab7b7dd2699a26f742cda\"}"
In other words, give the service application/x-www-form-urlencoded. Peculiarly, it will hand you back text/html which you'll have to JSON.parse. Weird service.
I am trying to get json form url :
uri = URI.parse("http://84.38.185.251:9262/send")
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Get.new(uri.request_uri)
response = http.request(request)
response.code # => 301
response.body # => The body (HTML, XML, blob, whatever)
response["cache-control"] # => public, max-age=2592000
puts response.body
but i get an error :`EOFError (end of file reached):
app/controllers/sensors_controller.rb:35:in sensinfo'
sensors_controller.rb:35:
response = http.request(request)
What am i did wrong?
this error mostly get for using https
If it is https then
Please try this one
uri = URI.parse("https://84.38.185.251:9262/send")
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Get.new(uri.request_uri)
http.use_ssl = true
response = http.request(request)
Note aditional
http.use_ssl = true
If it is not https
http.use_ssl = false
or you can add the condition
http.use_ssl = true if domain =~ /^https/
you can get more on this https://web.archive.org/web/20140226183826/http://expressica.com/2012/02/10/eoferror-end-of-file-reached-issue-when-post-a-form-with-nethttp/
I think it is a some sort of bug; typhoeus seems to work:
require 'typhoeus'
response = Typhoeus.get("http://84.38.185.251:9262/send")
p response.body
#=> {"ids":"-1","data":{"temp":"nan","h":"-1"},"status":"255","voltage":"-1"}
I'd like to open my stackoverflow.com page via ruby.
And I'd like to see it as if I am authenticated.
I took usr cookie from Google Chrome and created the following snippet:
require 'net/http'
require 'cgi'
url = "http://stackoverflow.com/users/1650525/alex-smolov"
uri = URI(url)
http = Net::HTTP.new(uri.host, 80)
request = Net::HTTP::Get.new(uri.request_uri)
cookie = CGI::Cookie.new("usr", "[my cookie is here]")
request['Cookie'] = cookie
r = http.request(request)
puts r.body
It does output a page, but I'm not authenticated there.
Is it possible to make a Net::HTTP::Get request in Ruby with cookie?
You need to call CGI::Cookie.to_s method.
request['Cookie'] = cookie.to_s
Try following code with / without .to_s.
require 'net/http'
require 'cgi'
uri = URI("http://httpbin.org/cookies")
http = Net::HTTP.new(uri.host, 80)
request = Net::HTTP::Get.new(uri.request_uri)
cookie1 = CGI::Cookie.new('usr', 'blah')
request['Cookie'] = cookie1.to_s # <---
r = http.request(request)
puts r.body
UPDATE
As the other answer mentioned, the resulted string is for server output. You need to strip out ; path= part.
CGI::Cookie.new('usr', 'value').to_s.sub(/; path=$/, '')
The accepted answer is imho incorrect. CGI::Cookie#to_s generates
string which should SERVER send to client, not something Net::HTTP should
use. It can be easily demonstrated:
[1] pry(main)> require 'cgi'
=> true
[2] pry(main)> CGI::Cookie.new('usr', 'value').to_s
=> "usr=value; path="
Code like this should work better.
require 'net/http'
require 'cgi'
uri = URI("http://httpbin.org/cookies")
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Get.new(uri.request_uri)
request['Cookie'] = "usr=#{CGI.encode cookie_value}"
r = http.request(request)
puts r.body
Or in case you have multiple cookies in a hash:
h = {'cookie1' => 'val1', 'cookie2' => 'val2'}
req['Cookie'] = h.map { |k,v| "#{k}=#{CGI.encode v}" } .join('; ')
I have a request that looks like this;
uri = URI.parse(url)
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Post.new(uri.request_uri)
request.body = purchase_xml
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
response = http.request(request)
result = Hash.from_xml(response.body)
However result = Hash.from_xml(response.body) gives me this error:
#<RuntimeError: Illegal character '&' in raw string "ybs_autocreate_status=ERROR&ybs_auto
Change any instances of & to & when you are not referring to a character code.