Bitcoin-central socket.io

[workin...@gmail.com]

Hello,

I would like to get live bitcoin price from this exchange https://bitcoin-central.net/

According to Chrome Web developer tools there is a socket.io server which send push message

https://bitcoin-central.net/ws/socket.io/1/?t=1382520738096

(1382520738096 is a unix timestamp)

but it also seems to work with https://bitcoin-central.net/ws/socket.io/1/

Server send a reply like y6qC0Ujanb8KJIqPareh:60:60:websocket,htmlfile,xhr-polling,jsonp-polling

and after I see wss://bitcoin-central.net/ws/socket.io/1/websocket/y6qC0Ujanb8KJIqPareh

I would like to try to subscribe to messages from this channel... unfortunately I still have no experience with both

websocket and socket.io.

I have some good Python skills, I also know patterns such as publish/subscribe (signal/slot).

Any help is welcome

Kind regards

WFC 

[workin...@gmail.com]

See as attachment code

I get this error message

$ python feed_bc_socketio.py

[[u'vvXsGRNc0clTACmwarfW', u'60', u'60', u'websocket'], u'htmlfile', u'xhr-polling', u'jsonp-polling']

vvXsGRNc0clTACmwarfW

wss://bitcoin-central.net/ws/socket.io/1/websocket/vvXsGRNc0clTACmwarfW

Traceback (most recent call last):

  File "feed_bc_socketio.py", line 40, in <module>

    main()

  File "feed_bc_socketio.py", line 31, in main

    socketIO = SocketIO(url_socketio, 80)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/socketIO_client/__init__.py", line 98, in __init__

    self._socketIO = _SocketIO(host, port, secure, headers, proxies)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/socketIO_client/__init__.py", line 305, in __init__

    proxies=proxies)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/api.py", line 55, in get

    return request('get', url, **kwargs)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/api.py", line 44, in request

    return session.request(method=method, url=url, **kwargs)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/sessions.py", line 323, in request

    prep = self.prepare_request(req)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/sessions.py", line 264, in prepare_request

    hooks=merge_setting(request.hooks, self.hooks),

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/models.py", line 280, in prepare

    self.prepare_url(url, params)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/models.py", line 321, in prepare_url

    scheme, auth, host, port, path, query, fragment = parse_url(url)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/requests/packages/urllib3/util.py", line 390, in parse_url

    raise LocationParseError("Failed to parse: %s" % url)

requests.packages.urllib3.exceptions.LocationParseError: Failed to parse: Failed to parse: wss:

Exception AttributeError: "'_SocketIO' object has no attribute 'connection'" in <bound method _SocketIO.__del__ of <socketIO_client._SocketIO object at 0x101242a50>> ignored

Exception AttributeError: "'SocketIO' object has no attribute '_socketIO'" in <bound method SocketIO.__del__ of <socketIO_client.SocketIO object at 0x101242c10>> ignored

[Alexandre Bourget]

This is the handshake. It expects you to follow up with the rest of the protocol.

See: https://github.com/LearnBoost/socket.io-spec and https://github.com/LearnBoost/socket.io-protocol for more details.

btw, take a look at bitcredits.io which I founded :)

Alexandre

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[workin...@gmail.com]

Thanks handshake was the word... but it doesn't solve my issue ;-)

I also try this code

HOSTNAME = "bitcoin-central.net"

PORT = 80

#"https://bitcoin-central.net/ws/socket.io/1/" -> handshake

# wss://bitcoin-central.net/ws/socket.io/1/websocket/bjwI5AELqTsaMm8F2Q9h

def handshake(host, port):

    url = "http://%s:%d/ws/socket.io/1/" % (host, port)

    print(url)

    u = urlopen(url)

    if u.getcode() == 200:

        response = u.readline()

        (sid, hbtimeout, ctimeout, supported) = response.split(":")

        supportedlist = supported.split(",")

        if "websocket" in supportedlist:

            return (sid, hbtimeout, ctimeout)

        else:

            raise TransportException()

    else:

        raise InvalidResponseException()

def main():

    print("ok")

    try:

        print("ok2")

        (sid, hbtimeout, ctimeout) = handshake(HOSTNAME, PORT) #handshaking according to socket.io spec.

    except Exception as e:

        print e

        sys.exit(1)

    url_ws = "wss://%s:%d/ws/socket.io/1/websocket/%s" % (HOSTNAME, PORT, sid)

    print(url_ws)

    ws = websocket.create_connection(url_ws)

    print ws.recv()

    ws.send("2::")

    ws.send("5:1::{'name':'newimg', 'args':'bla'}")

    print ws.recv()

    print "Closing connection"

    ws.close()

    

if __name__ == "__main__":

    main()

but I get 

$ python feed_bc_socketio.py

ok

ok2

http://bitcoin-central.net:80/ws/socket.io/1/

wss://bitcoin-central.net:80/ws/socket.io/1/websocket/UAlTzqWujuiLNHpu2Q9t

Traceback (most recent call last):

  File "feed_bc_socketio.py", line 82, in <module>

    main()

  File "feed_bc_socketio.py", line 73, in main

    ws = websocket.create_connection(url_ws)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/websocket.py", line 201, in create_connection

    websock.connect(url, **options)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/site-packages/websocket.py", line 451, in connect

    self.sock = ssl.wrap_socket(self.sock, **sslopt)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/ssl.py", line 381, in wrap_socket

    ciphers=ciphers)

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/ssl.py", line 143, in __init__

    self.do_handshake()

  File "/Library/Frameworks/EPD64.framework/Versions/7.3/lib/python2.7/ssl.py", line 305, in do_handshake

    self._sslobj.do_handshake()

ssl.SSLError: [Errno 1] _ssl.c:504: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

About bitcredits....

I follow you on Twitter

I stay tuned...

[Alexandre Bourget]

Have you tried:

   https://pypi.python.org/pypi/socketIO-client

??

Alexandre

[workin...@gmail.com]

I didn't manage to use it...

but I'm going forward...

wss is secured... so port is 443 but it's 80 for handshake

now this is what I get

$ python feed_bc_socketio.py

ok

ok2

http://bitcoin-central.net:80/ws/socket.io/1/

wss://bitcoin-central.net:443/ws/socket.io/1/websocket/PES7zudIQ4WlHtp70u7V

1::

6:::1

Closing connection

How can I get tickers (price) ?

I probably need to reverse engineered their webpage...

Any idea ?