broadcast option.

bin/node

@@ -9,12 +9,12 @@ process.on('uncaughtException', function(err) {
   process.exit(1);
 });
 
-var node = bcoin.fullnode({
-  // passphrase: 'node',
+var node = new bcoin.fullnode({
   prune: process.argv.indexOf('--prune') !== -1,
   useCheckpoints: process.argv.indexOf('--checkpoints') !== -1,
   listen: process.argv.indexOf('--listen') !== -1,
   selfish: process.argv.indexOf('--selfish') !== -1,
+  broadcast: process.argv.indexOf('--broadcast') !== -1,
   mine: process.argv.indexOf('--mine') !== -1
 });
 

lib/bcoin/fullnode.js

@@ -87,6 +87,7 @@ Fullnode.prototype._init = function _init() {
     witness: network.witness,
     listen: this.options.listen,
     selfish: this.options.selfish,
+    broadcast: this.options.broadcast,
     spv: false
   });
 

lib/bcoin/pool.js

@@ -229,9 +229,23 @@ Pool.prototype.connect = function connect() {
   if (this.connected)
     return;
 
-  if (this.mempool && this.options.broadcast) {
-    this.mempool.on('tx', function(tx) {
-      self.broadcast(tx);
+  if (this.options.broadcast) {
+    if (this.mempool) {
+      this.mempool.on('tx', function(tx) {
+        self.broadcast(tx);
+      });
+    }
+
+    // Normally we would also broadcast
+    // competing chains, but we want to
+    // avoid getting banned if an evil
+    // miner sends us an invalid competing
+    // chain that we can't connect and
+    // verify yet.
+    this.chain.on('block', function(block) {
+      if (!self.synced)
+        return;
+      self.broadcast(block);
     });
   }