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Author Topic: Help about MtGox authentication using Python  (Read 5214 times)
029xue
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18YzZXbnTPFhtH5Mv5KcGKbduUX1w67xos


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April 17, 2012, 08:05:47 AM
 #1

Hi,
I'm recently write a small program to trade bitcoin in MtGox, but I met a wierd problem when using Python to communicate with MtGox API.
The code is from post "Python MtGox auth example", however, I'm always get the not logon error like below:
Code:
{u'error': u'Must be logged in'}

The code is like below:
Code:
from urllib import urlencode
import urllib2
import time
from hashlib import sha512
from hmac import HMAC
import base64
import json
def get_nonce():
    return int(time.time()*100000)

def sign_data(secret, data):
    return base64.b64encode(str(HMAC(secret, data, sha512).digest()))
      
class requester:
    def __init__(self, auth_key, auth_secret):
        self.auth_key = auth_key
        self.auth_secret = base64.b64decode(auth_secret)
        
    def build_query(self, req={}):
        req["nonce"] = get_nonce()
        post_data = urlencode(req)
        headers = {}
        headers["User-Agent"] = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)"
        headers["Accept"] = "application/json"
        headers["Rest-Key"] = self.auth_key
        headers["Rest-Sign"] = sign_data(self.auth_secret, post_data)
        return (post_data, headers)
        
    def perform(self, path, args):
        data, headers = self.build_query(args)
        req = urllib2.Request("https://mtgox.com/api/0/"+path, data, headers)
        res = urllib2.urlopen(req, data)
        return json.load(res)


m = requester(auth_key=mykey, auth_secret = mysecret)
print m.perform("info.php", {})

The wired thing is, when I using the C# code to communicate, it all works well.
I checked the http headers and found there're a little difference:

.NET header
Code:
CONNECT mtgox.com:443 HTTP/1.1
Host: mtgox.com
Connection: Keep-Alive

HTTP/1.1 200 Connection Established
FiddlerGateway: Direct
StartTime: 15:34:07.861
Connection: close

Code:
POST /api/0/info.php HTTP/1.1
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: application/json
Rest-Key: fbbb66ba-5740-449d-a078-3d55752d82ed
Rest-Sign: BE3pmUGjOPh4069XH4j28tw3RKd0HEZWIWoJ+gahIXR5Qn4T+rc+E2aN2L0WfUcx4ptzmfuhe9lqKtkJHE+nGQ==
Host: mtgox.com
Content-Length: 24
Expect: 100-continue
Connection: Keep-Alive

HTTP/1.0 200 OK
Date: Tue, 17 Apr 2012 07:34:09 GMT
Server: Apache
X-Powered-By: PHP/5.3.10
Set-Cookie: SESSION_ID=ff7f7d011f6321a87b6cdd93d27fb7e5; expires=Thu, 19-Apr-2012 07:34:09 GMT; path=/; domain=.mtgox.com; HttpOnly
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Strict-Transport-Security: max-age=1209600
Content-Length: 1253
nnCoection: close
Content-Type: application/json
Connection: Keep-Alive

Python header:
Code:
CONNECT mtgox.com:443 HTTP/1.0
Host: mtgox.com:443

HTTP/1.0 200 Connection Established
FiddlerGateway: Direct
StartTime: 15:34:20.718
Connection: close

Code:

POST /api/0/info.php HTTP/1.1
Accept-Encoding: identity
Rest-Sign: KV6aRCWoOSJbXMwY/c5hhlZ9GLsqxYfPMzvFWRV7KmrGCnL6dmp3mPAMNO3JCWDWfEFwAbMiCeUoUap7FIdewg==
Content-Length: 21
Rest-Key: fbbb66ba-5740-449d-a078-3d55752d82ed
Connection: close
Accept: application/json
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: mtgox.com
Content-Type: application/x-www-form-urlencoded

HTTP/1.0 200 OK
Date: Tue, 17 Apr 2012 07:34:23 GMT
Server: Apache
X-Powered-By: PHP/5.3.10
Set-Cookie: SESSION_ID=3e8b54b2e889b2516c87639d02252daf; expires=Thu, 19-Apr-2012 07:34:23 GMT; path=/; domain=.mtgox.com; HttpOnly
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Strict-Transport-Security: max-age=1209600
Content-Length: 29
Connection: close
Content-Type: application/json

The only difference is that:
https://public.sn2.livefilestore.com/y1pvy4eqYCVgTia_7dDcpCIVy4wQ9-xxLR-VcM-NBvt1cGxzqiv7V2ijeAgimnTpXKXykAjrJlHo9Oz8DMasUL23g/123.png?psid=1

I guess it may related with the connection type, but I'm new to Python and have no idea how to control it...
(why there're dozens of http lib exist in Python Smiley

Any help is appreciate!

18YzZXbnTPFhtH5Mv5KcGKbduUX1w67xos
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