Steem-lib Guide [Part1]

Remote.js is the point of entry for interacting with Steem

Servers Setting

to set multiple-servers, with login parameters:

var Remote = require('steem-lib').Remote;
var remote = new Remote({
  servers: [
    {
        url: 'wss://steemd.steemit.com',
        primary: true,
        username: '',
        password: '',
    },
    {
        url: 'wss://steemnode.mydomain.com',
        username: 'myname',
        password: 'pw123',
    }
  ]
});

If any server been set as 'primary', all API calls will be send to it, unless it's gone off-line then the requests will be directed to other servers. If no server is set as primary, the Remote instance will choose one base on a scoring.

If there's no username/password required for a server, pass in its url string will do:

var remote = new Remote({
    servers: ['wss://node.steem.ws', 'wss://steemd.steemit.com']
})

Initiate connection:

remote.connect(function (){
    console.log('connected to steem servers.');
})

once connect, Remote will try to stay connected to every servers... i.e. whenever a connection is closed, it will automatic try to reconnect.

to manually stop all connection:

remote.disconnect();

Making Api Call

Remote has a method for every Steem APIs.

remote.get_account_history('ripplerm', -1, 10, function(err, res) {
    console.log(err || res);
});

equivalent method in camelCase:

remote.getAccountHistory('ripplerm', -1, 10, function(){});

optionally, to pass arguments in single object, append the method with 'With':

remote.getAccountHistoryWith({
    account: 'ripplerm',
    from: -1, 
    limit: 10
}, function(err, res){
    console.log(err, res)
});

Remote events

• 'connect' - when connected to first server.
• 'disconnect' - when all servers are offline.
• 'block_advanced' - when there's a new last_irreversible_block.

remote.on('block_advanced', function (num) {
    console.log('last_irreversible_block_num =', num);
})

events emited when using Remote.stream().

• 'block' - new irreversible_block
• 'transaction' - new txn into irreversible_block

remote.on('block', function (block) {
  //process block object...
})
remote.on('transaction', function (txn) {
  //process txn...
})
remote.startStream();

streaming block_header (for head blocks):

remote.streamBlockHeader(function (blockHeader){
    console.log('headblock num:', Remote.getBlockNum(blockHeader));
    console.log('headblock id:', Remote.getBlockId(blockHeader));
})

Next: Steem-lib Guide [Part2]