crowetic/qortal
1
0
Fork 0
forked from Qortal/qortal
Code Pull Requests Activity

Implemented ElectrumX version negotiation. Fixes issues with DOGE wallet.

Browse Source
This commit is contained in:
CalDescent 2023-01-27 14:33:34 +00:00
parent 6b36d94c6f
commit 8c708558cb
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/main/java/org/qortal/crosschain/ElectrumX.java
View File

@ -5,6 +5,7 @@ import java.math.BigDecimal;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.text.DecimalFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@ -30,7 +31,11 @@ public class ElectrumX extends BitcoinyBlockchainProvider {
private static final Logger LOGGER = LogManager.getLogger(ElectrumX.class);
private static final Random RANDOM = new Random();
// See: https://electrumx.readthedocs.io/en/latest/protocol-changes.html
private static final double MIN_PROTOCOL_VERSION = 1.2;
private static final double MAX_PROTOCOL_VERSION = 2.0; // Higher than current latest, for hopeful future-proofing
private static final String CLIENT_NAME = "Qortal";
private static final int BLOCK_HEADER_LENGTH = 80;
// "message": "daemon error: DaemonError({'code': -5, 'message': 'No such mempool or blockchain transaction. Use gettransaction for wallet transactions.'})"
@ -679,6 +684,9 @@ public class ElectrumX extends BitcoinyBlockchainProvider {
this.scanner = new Scanner(this.socket.getInputStream());
this.scanner.useDelimiter("\n");
// All connections need to start with a version negotiation
this.connectedRpc("server.version");
// Check connection is suitable by asking for server features, including genesis block hash
JSONObject featuresJson = (JSONObject) this.connectedRpc("server.features");
@ -725,6 +733,17 @@ public class ElectrumX extends BitcoinyBlockchainProvider {
JSONArray requestParams = new JSONArray();
requestParams.addAll(Arrays.asList(params));
// server.version needs additional params to negotiate a version
if (method.equals("server.version")) {
requestParams.add(CLIENT_NAME);
List<String> versions = new ArrayList<>();
DecimalFormat df = new DecimalFormat("#.#");
versions.add(df.format(MIN_PROTOCOL_VERSION));
versions.add(df.format(MAX_PROTOCOL_VERSION));
requestParams.add(versions);
}
requestJson.put("params", requestParams);
String request = requestJson.toJSONString() + "\n";