rpc: fundrawtransaction.

lib/bcoin/http/rpc.js

@@ -1933,7 +1933,46 @@ function mergeSigs(a, b) {
 }
 
 RPC.prototype.fundrawtransaction = function fundrawtransaction(args, callback) {
-  callback(new Error('Not implemented.'));
+  var tx, options, changeAddress, feeRate;
+
+  if (args.help || args.length < 1 || args.length > 2) {
+      return callback(new RPCError('fundrawtransaction'
+        + ' "hexstring" ( options )'));
+  }
+
+  if (!utils.isHex(args[0]))
+    return callback(new RPCError('Invalid parameter.'));
+
+  tx = bcoin.mtx.fromRaw(args[0], 'hex');
+
+  if (tx.outputs.length === 0)
+    return callback(new RPCError('TX must have at least one output.'));
+
+  if (args.length === 2 && args[1]) {
+    options = args[1];
+    changeAddress = options.changeAddress;
+    if (changeAddress)
+      changeAddress = bcoin.address.fromBase58(String(changeAddress));
+    feeRate = options.feeRate;
+    if (feeRate != null)
+      feeRate = utils.satoshi(feeRate + '');
+  }
+
+  options = {
+    rate: feeRate,
+    changeAddress: changeAddress
+  };
+
+  this.wallet.fund(tx, options, function(err) {
+    if (err)
+      return callback(err);
+
+    callback(null, {
+      hex: tx.toRaw().toString('hex'),
+      changepos: tx.changeIndex,
+      fee: +utils.btc(tx.getFee())
+    });
+  });
 };
 
 RPC.prototype._createRedeem = function _createRedeem(args, callback) {