Update to Electrum protocol 1.4

[webworker01]

Protocol version 1.3+ removed some methods that allowed direct querying of addresses and now require scripthash to be passed instead.

• Investigate the new methods
• Update the Electrum.php library to match
• Create new sample docs

kyuupichan/electrumx@7911f0d

[melaxon]

I managed to connect to TCP server and receive the responses as follow (I still could not connect to SSL servers):

1. In Electrum.php I replaced ...address... to ...scripthash... where needed. E.g.

    public function blockchainAddressListunspent($address)
    {
        return $this->request('blockchain.scripthash.listunspent', [$address]);
    }

2. I used the following code to connect to Bitcoin server (I also added Bitcoin.php, in case of KMD some parameters must be changed):

use webworker01\Komodo\Electrum;
use BitWasp\Bitcoin\Address\AddressCreator;
use BitWasp\Bitcoin\Network\Networks\Bitcoin;
use webworker01\Komodo\Komodo;

require_once('app/addons/bitcoin_xmv/lib/komodophp/vendor/autoload.php');
$bitcoin = new Bitcoin;
$komodo = new Komodo;
$addrCreator = new AddressCreator();


$addressInput = '1Kr6QSydW9bFQG1mXiPNNu6WpJGmUa9i1g';

echo "<br>AddressInput:<br>$addressInput <br>";

$address = null;
try {
   $address = $addrCreator->fromString($addressInput, $bitcoin)->getHash();

} catch ( \BitWasp\Bitcoin\Exceptions\UnrecognizedAddressException $e) {
   $errormessage = 'The address you entered is not valid.';
   echo "Error message: ".$errormessage;
}

$hash160 = bin2hex(getProtectedValue($address, 'buffer'));
fn_printr($address);

$p2pkh = sprintf("76a914%s88ac", $hash160);

echo "<br>P2PKH:<br>$p2pkh <br>";

$hash = hash('sha256', hex2bin($p2pkh));
echo "<br>Hash:<br>$hash <br>";

$hsah = ReverseEndianness($hash);
echo "<br>Hsah:<br>$hsah <br>";

$electrumhost = 'electrum2.privateservers.network';
$electrumport = 50001;

//$electrumhost = 'electrum3.cipig.net';
//$electrumport = 10001;

$electrum = new Electrum();

$electrum->connect($electrumhost, $electrumport);

$result = $electrum->blockchainAddressGetBalance($hsah);
echo "<br>Address balance:";
echo "<br>Confirmed:" . $result->result->confirmed;
echo "<br>Unconfirmed:" . $result->result->unconfirmed;
echo "<br>";

echo "<br>Server version:<br>";
$result = $electrum->serverVersion();
fn_printr($result);

echo "<br>Server features:<br>";
$result = $electrum->serverFeatures();
fn_printr($result);


echo "<br>List unspent:<br>";
$result = $electrum->blockchainAddressListunspent($hsah);
fn_printr($result);

function ReverseEndianness($num)
{
    $strlen = strlen($num);
    if ($strlen % 2) {
        throw new \Exception('ReverseEndianness: input string must have an even length');
    }
    $r = '';
    for ($i = strlen($num); $i>=0; $i=$i-2) {
        $r .= substr($num, $i, 2);
    }
    return $r;

}

function getProtectedValue($obj,$name)
{
    $array = (array)$obj;
    $prefix = chr(0).'*'.chr(0);
    return $array[$prefix.$name];
}

function fn_printr($val)
{
    echo '<pre>';
    print_r($val);
    echo '</pre>';
}

exit;

This is a printout:

AddressInput:
1Kr6QSydW9bFQG1mXiPNNu6WpJGmUa9i1g
BitWasp\Buffertools\Buffer Object
(
    [size] => 20
    [buffer] => 0xcebb2851a9c7cfe2582c12ecaf7f3ff4383d1dc0
)

P2PKH:
76a914cebb2851a9c7cfe2582c12ecaf7f3ff4383d1dc088ac

Hash:
897b7e368b606a68791cf8414505768d4a51c84153f9d97126a4ddc49df06591

Hsah:
9165f09dc4dda42671d9f95341c8514a8d76054541f81c79686a608b367e7b89

Address balance:
Confirmed:162565630831
Unconfirmed:0

Server version:
stdClass Object
(
    [jsonrpc] => 2.0
    [result] => Array
        (
            [0] => ElectrumX 1.13.0
            [1] => 1.4
        )

    [id] => 0
)

Server features:
stdClass Object
(
    [jsonrpc] => 2.0
    [result] => stdClass Object
        (
            [hosts] => stdClass Object
                (
                    [electrum2.privateservers.network] => stdClass Object
                        (
                            [tcp_port] => 50001
                            [ssl_port] => 50002
                            [ws_port] => 50003
                        )

                )

            [pruning] => 
            [server_version] => ElectrumX 1.13.0
            [protocol_min] => 1.4
            [protocol_max] => 1.4.2
            [genesis_hash] => 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
            [hash_function] => sha256
            [services] => Array
                (
                    [0] => tcp://electrum2.privateservers.network:50001
                    [1] => ssl://electrum2.privateservers.network:50002
                    [2] => ws://electrum2.privateservers.network:50003
                )

        )

    [id] => 0
)

List unspent:
stdClass Object
(
    [jsonrpc] => 2.0
    [result] => Array
        (
            [0] => stdClass Object
                (
                    [tx_hash] => d044917c01e547efa8721821356822f9ae579a9c66f950881fdfc011a9770559
                    [tx_pos] => 1
                    [height] => 601217
                    [value] => 54424412706
                )

            [1] => stdClass Object
                (
                    [tx_hash] => 7426ad002d143cb2cf210783a0dbe1f3a1db32066127f5500b185db703f0ed01
                    [tx_pos] => 1
                    [height] => 601221
                    [value] => 53169104516
                )

            [2] => stdClass Object
                (
                    [tx_hash] => 295af749ef5b211e278200ee95fe8f1492f63e9e366632d27b9e783f352e1cc8
                    [tx_pos] => 1
                    [height] => 601225
                    [value] => 252004714
                )

            [3] => stdClass Object
                (
                    [tx_hash] => 9fe0b29628ff4491cd8eece27b06f664011cda79fc472aeb87d90f36bbd815c1
                    [tx_pos] => 1
                    [height] => 601225
                    [value] => 51333383928
                )

            [4] => stdClass Object
                (
                    [tx_hash] => 581ab3c94f31bb42b0a8164bb36e88bf0f2dc8d887a2b45a0cc01f9dfe6fae17
                    [tx_pos] => 4
                    [height] => 601225
                    [value] => 3386724967
                )

        )

    [id] => 0
)

Next step is to find out how to manage SSL connections. Please advise anybody.