Add a new method to broadcast bitcoin transactions directly to bitcoi…

…n nodes in a decentralized way avoiding third parties.

SharpPusher/Services/P2P.cs

@@ -0,0 +1,70 @@
+// SharpPusher
+// Copyright (c) 2017 Coding Enthusiast
+// Distributed under the MIT software license, see the accompanying
+// file LICENCE or http://www.opensource.org/licenses/mit-license.php.
+
+using Autarkysoft.Bitcoin;
+using Autarkysoft.Bitcoin.Blockchain.Transactions;
+using Autarkysoft.Bitcoin.Clients;
+using Autarkysoft.Bitcoin.P2PNetwork.Messages;
+using Autarkysoft.Bitcoin.P2PNetwork.Messages.MessagePayloads;
+using System.Threading.Tasks;
+
+namespace SharpPusher.Services
+{
+    public class P2P : Api
+    {
+        public P2P(bool isMainNet)
+        {
+            netType = isMainNet ? NetworkType.MainNet : NetworkType.TestNet;
+        }
+
+
+        private readonly NetworkType netType;
+
+        public static readonly string[] DnsMain = new string[]
+        {
+            "seed.bitcoin.sipa.be", // Pieter Wuille, only supports x1, x5, x9, and xd
+            "dnsseed.bluematt.me", // Matt Corallo, only supports x9
+            "dnsseed.bitcoin.dashjr.org", // Luke Dashjr
+            "seed.bitcoinstats.com", // Christian Decker, supports x1 - xf
+            "seed.bitcoin.jonasschnelli.ch", // Jonas Schnelli, only supports x1, x5, x9, and xd
+            "seed.btc.petertodd.org", // Peter Todd, only supports x1, x5, x9, and xd
+            "seed.bitcoin.sprovoost.nl", // Sjors Provoost
+            "dnsseed.emzy.de", // Stephan Oeste
+            "seed.bitcoin.wiz.biz", // Jason Maurice
+        };
+
+        public static readonly string[] DnsTest = new string[]
+        {
+            "testnet-seed.bitcoin.jonasschnelli.ch",
+            "seed.tbtc.petertodd.org",
+            "seed.testnet.bitcoin.sprovoost.nl",
+            "testnet-seed.bluematt.me",
+        };
+
+
+        public override string ApiName => "P2P";
+
+        public override async Task<Response<string>> PushTx(string txHex)
+        {
+            Transaction tx = new(txHex);
+            Message msg = new(new TxPayload(tx), netType);
+
+            MinimalClientSettings settings = new(netType, 4, null)
+            {
+                DnsSeeds = netType == NetworkType.MainNet ? DnsMain : DnsTest
+            };
+            MinimalClient client = new(settings);
+            client.Start();
+            await Task.Delay(TimeConstants.OneSecond_Milliseconds * 3);
+            client.Send(msg);
+
+            return new Response<string>()
+            {
+                Result = $"Transaction was sent to {settings.MaxConnectionCount} nodes. " +
+                         $"Transaction ID: {tx.GetTransactionId()}"
+            };
+        }
+    }
+}

SharpPusher/ViewModels/MainWindowViewModel.cs

@@ -98,6 +98,7 @@ private void SetApiList()
                         new Blockchair(Blockchair.Chain.BTC),
                         new Smartbit(),
                         new BlockCypher(),
+                        new P2P(true)
                     };
                     break;
                 case Networks.BitcoinCash:
@@ -128,6 +129,7 @@ private void SetApiList()
                     ApiList = new ObservableCollection<Api>()
                     {
                         new Blockchair(Blockchair.Chain.TBTC),
+                        new P2P(false)
                     };
                     break;
                 case Networks.BitcoinSV: