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NAME

    Finance::Bitcoin::Feed - Collect bitcoin real-time price from many
    sites' streaming data source

SYNOPSIS

        use Finance::Bitcoin::Feed;
    
        #default output is to print to the stdout
        Finance::Bitcoin::Feed->new->run();
        # will print output to the stdout:
        # BITSTAMP BTCUSD 123.00
        
    
        #or custom your stdout
        open  my $fh, ">out.txt";
        $fh->autoflush();
        my $feed = Finance::Bitcoin::Feed->new(output => sub{
           my ($self, $site, $currency, $price) = @_;
           print $fh "the price currency $currency on site $site is $price\n";
        });
        # let's go!
        $feed->run();
    
        #you can also custom which site you want to connect
        Finance::Bitcoin::Feed->new(sites => [qw(LakeBtc)])->go;

DESCRIPTION

    Finance::Bitcoin::Feed is a bitcoin realtime data source which collect
    real time data source from these sites:

      * HitBtc <https://hitbtc.com/api#socketio>

      * BtcChina
      <http://btcchina.org/websocket-api-market-data-documentation-en>

      * CoinSetter <https://www.coinsetter.com/api/websockets/last>

      * <lakebtc api <https://www.lakebtc.com/s/api>

    The default output format to the stdout by this format:

       site_name TIMESTAMP CURRENCY price

    For example:

       COINSETTER 1418173081724 BTCUSD 123.00

    The unit of timestamp is ms.

    You can custom your output by listen on the event output and modify the
    data it received.

    Note the followiing sites doesn't give the timestamp. So the timestamp
    in the result will be 0:

    LakeBtc

METHODS

    This class inherits all methods from Mojo::EventEmitter