Implement SignTransaction, BroadcastTransaction

Allow requiredKeys override

Author: mmcs85

EosSharp/EosSharp.Core/EosBase.cs

@@ -382,9 +382,25 @@ public async Task<GetScheduledTransactionsResponse> GetScheduledTransactions(Get
         /// Creates a signed transaction using the signature provider and broadcasts it to the network
         /// </summary>
         /// <param name="trx">Transaction to send</param>
+        /// <param name="requiredKeys">Override required keys to sign transaction</param>
         /// <returns>transaction id</returns>
-        public async Task<string> CreateTransaction(Transaction trx)
+        public async Task<string> CreateTransaction(Transaction trx, List<string> requiredKeys = null)
         {
+            var signedTrx = await SignTransaction(trx, requiredKeys);
+            return await BroadcastTransaction(signedTrx);
+        }
+
+        /// <summary>
+        /// Creates a signed transaction using the signature provider
+        /// </summary>
+        /// <param name="trx">Transaction to sign</param>
+        /// <param name="requiredKeys">Override required keys to sign transaction</param>
+        /// <returns>transaction id</returns>
+        public async Task<SignedTransaction> SignTransaction(Transaction trx, List<string> requiredKeys = null)
+        {
+            if (trx == null)
+                throw new ArgumentNullException("Transaction");
+
             if (EosConfig.SignProvider == null)
                 throw new ArgumentNullException("SignProvider");
 
@@ -429,24 +445,44 @@ public async Task<string> CreateTransaction(Transaction trx)
             }
 
             var packedTrx = await AbiSerializer.SerializePackedTransaction(trx);
-            var availableKeys = await EosConfig.SignProvider.GetAvailableKeys();
-            var requiredKeys = await GetRequiredKeys(availableKeys.ToList(), trx);
-
+            
+            if(requiredKeys == null || requiredKeys.Count == 0)
+            {
+                var availableKeys = await EosConfig.SignProvider.GetAvailableKeys();
+                requiredKeys = await GetRequiredKeys(availableKeys.ToList(), trx);
+            }
+            
             IEnumerable<string> abis = null;
 
             if (trx.actions != null)
                 abis = trx.actions.Select(a => a.account);
 
             var signatures = await EosConfig.SignProvider.Sign(chainId, requiredKeys, packedTrx, abis);
 
+            return new SignedTransaction()
+            {
+                Signatures = signatures,
+                PackedTransaction = packedTrx
+            };
+        }
+
+        /// <summary>
+        /// Broadcast signed transaction to the network
+        /// </summary>
+        /// <param name="strx">Signed transaction to send</param>
+        /// <returns></returns>
+        public async Task<string> BroadcastTransaction(SignedTransaction strx)
+        {
+            if (strx == null)
+                throw new ArgumentNullException("SignedTransaction");
+
             var result = await Api.PushTransaction(new PushTransactionRequest()
             {
-                signatures = signatures.ToArray(),
+                signatures = strx.Signatures.ToArray(),
                 compression = 0,
                 packed_context_free_data = "",
-                packed_trx = SerializationHelper.ByteArrayToHexString(packedTrx)
+                packed_trx = SerializationHelper.ByteArrayToHexString(strx.PackedTransaction)
             });
-
             return result.transaction_id;
         }
 

EosSharp/EosSharp.Core/SignedTransaction.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace EosSharp.Core
+{
+    public class SignedTransaction
+    {
+        public IEnumerable<string> Signatures { get; set; }
+        public byte[] PackedTransaction { get; set; }
+    }
+}

EosSharp/EosSharp/EosSharp.csproj

@@ -13,10 +13,11 @@
     <Copyright>Copyright 2019</Copyright>
     <Product>eos-sharp</Product>
     <PackageId>eos-sharp</PackageId>
-    <AssemblyVersion>2.1.1.0</AssemblyVersion>
-    <FileVersion>2.1.1.0</FileVersion>
-    <Version>2.1.1</Version>
-    <PackageReleaseNotes>Implement CombinedSignerProvider to allow for multiple combined signatureProviders to sign the same transaction</PackageReleaseNotes>
+    <AssemblyVersion>2.1.2.0</AssemblyVersion>
+    <FileVersion>2.1.2.0</FileVersion>
+    <Version>2.1.2</Version>
+    <PackageReleaseNotes>Implement SignTransaction, BroadcastTransaction
+Allow requiredKeys override</PackageReleaseNotes>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
   </PropertyGroup>