php-graphene-node-client

It is PHP API client for Steem/GOLOS blockchain

Github or packagist with MIT license. Author @t3ran13 and active helper @semasping

In Release v3.1.0

• spec256k1-php bug fix
• upd Transaction:init()
• brodcast operations classes Op*.php were updated
• readme was updated

spec256k1-php bug fix

Transactions are signing with spec256k1-php with function secp256k1_ecdsa_sign_recoverable($context, $signatureRec, $msg32, $privateKey) and if it is not canonical from first time, you have to make transaction for other block. For searching canonical sign function have to implement two more parameters, but spec256k1-php library does not have it.

It is was solved with php-hack in Transaction::sign() - we will add 1 sec to tx expiration time and try to get canonical signing for new msg. Up to 200 tries.

...
//becouse spec256k1-php canonical sign trouble will use php hack.
//If sign is not canonical, we have to chang msg () and try to sign again
$nTries = 0;
while (true) {
    $nTries++;
    $msg = self::getTxMsg($chainName, $trxData);
    echo '
' . print_r($trxData->getParams(), true) . '
'; //FIXME delete it

    try {
        foreach ($privateWIFs as $keyName => $privateWif) {
            $index = count($trxData->getParams()[0]['signatures']);

            /** @var CommandQueryData $trxData */
            $trxData->setParamByKey('0:signatures:' . $index, self::signOperation($msg, $privateWif));
        }
        break;
    } catch (TransactionSignException $e) {
        if ($nTries > 200) {
            //stop tries to find canonical sign
            throw $e;
            break;
        } else {
            /** @var CommandQueryData $trxData */
            $params = $trxData->getParams();
            foreach ($params as $key => $tx) {
                $tx['expiration'] = (new \DateTime($tx['expiration']))
                    ->add(new \DateInterval('PT0M1S'))
                    ->format('Y-m-d\TH:i:s\.000');
                $params[$key] = $tx;
            }
            $trxData->setParams($params);
        }
    }
...


Transaction:init()
We have to transfer connector(it have to implements ConnectorInterface) instead ChainName param to function now like in example below
<?php

use GrapheneNodeClient\Tools\Transaction;
use GrapheneNodeClient\Connectors\Http\SteemitHttpConnector;
use GrapheneNodeClient\Connectors\WebSocket\GolosWSConnector;

$connector = new SteemitHttpConnector();
//$connector = new GolosWSConnector();

/** @var CommandQueryData $tx */
$tx = Transaction::init($connector);
$tx->setParamByKey(
    '0:operations:0',
    [
        'vote',
        [
            'voter'    => $voter,
            'author'   => $author,
            'permlink' => $permlink,
            'weight'   => $weight
        ]
    ]
);

$command = new BroadcastTransactionSynchronousCommand($connector);
Transaction::sign($chainName, $tx, ['posting' => $publicWif]);

$answer = $command->execute(
    $tx
);


brodcast operations classes Op*.php were updated
We have to transfer connector(it have to implements ConnectorInterface) instead ChainName param to function now like in example below
<?php

use GrapheneNodeClient\Tools\ChainOperations\OpVote;
use GrapheneNodeClient\Connectors\Http\SteemitHttpConnector;
use GrapheneNodeClient\Connectors\WebSocket\GolosWSConnector;

$connector = new SteemitHttpConnector();
//$connector = new GolosWSConnector();

$answer = OpVote::doSynchronous(
    $connector,
    'guest123',
    '5JRaypasxMx1L97ZUX7YuC5Psb5EAbF821kkAGtBj7xCJFQcbLg',
    'firepower',
    'steemit-veni-vidi-vici-steemfest-2016-together-we-made-it-happen-thank-you-steemians',
    10000
);

// example of answer
//Array
//(
//    [id] => 5
//    [result] => Array
//        (
//            [id] => a2c52988ea870e446480782ff046994de2666e0d
//            [block_num] => 17852337
//            [trx_num] => 1
//            [expired] =>
//        )
//
//)


Do not forget to make pull request and post about it on utopian


It is better with each commit
Commits were done by me for release v3.1.0

TransactionSignException.php was added
Transaction.php php hack for fix bug of spec256k1-php and tx init upd
OpComment.php was updated
OpTransfer.php was updated
OpVote.php was updated
README.md was updated
clear staff


Posted on Utopian.io -  Rewarding Open Source Contributors