Tx event firing

- The ProcessMessages signal was scheduling/connecting its slots slightly out of order for what we need
- First, the scan_messages needs to run and copy out the stream
- Second, Bitcoin's ProcessMessages needs to run in order to run AcceptToMemoryPool
- Third, scan_messages_after needs to run in order to signal our tx_monitor
- In order to make this happen, we need to pair ProcessMessages slot to the scan_messages slot and order that
- Then, AFTER those two complete, we can schedule scan_messages_after

.travis.yml

@@ -10,6 +10,7 @@ before_install:
 script:
   - _mocha -R spec integration/regtest.js
   - _mocha -R spec integration/regtest-node.js
+  - _mocha -R spec integration/p2p.js
   - _mocha -R spec --recursive
 cache:
   directories:

etc/bitcoin.patch

@@ -381,6 +381,19 @@ index c65e842..0e44bb5 100644
      CLevelDBWrapper(const boost::filesystem::path& path, size_t nCacheSize, bool fMemory = false, bool fWipe = false);
      ~CLevelDBWrapper();
 
+diff --git a/src/main.cpp b/src/main.cpp
+index 8f82abf..b3784a7 100644
+--- a/src/main.cpp
++++ b/src/main.cpp
+@@ -486,7 +486,7 @@ bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats) {
+ void RegisterNodeSignals(CNodeSignals& nodeSignals)
+ {
+     nodeSignals.GetHeight.connect(&GetHeight);
+-    nodeSignals.ProcessMessages.connect(&ProcessMessages);
++    nodeSignals.ProcessMessages.connect(0, &ProcessMessages, boost::signals2::at_back);
+     nodeSignals.SendMessages.connect(&SendMessages);
+     nodeSignals.InitializeNode.connect(&InitializeNode);
+     nodeSignals.FinalizeNode.connect(&FinalizeNode);
 diff --git a/src/net.cpp b/src/net.cpp
 index 3908be6..cf3ffd4 100644
 --- a/src/net.cpp

src/libbitcoind.cc

@@ -278,8 +278,8 @@ NAN_METHOD(StartTxMon) {
   txmon_callback_available = true;
 
   CNodeSignals& nodeSignals = GetNodeSignals();
-  nodeSignals.ProcessMessages.connect(&scan_messages, boost::signals2::at_front);
-  nodeSignals.ProcessMessages.connect(&scan_messages_after, boost::signals2::at_back);
+  nodeSignals.ProcessMessages.connect(0, &scan_messages, boost::signals2::at_front);
+  nodeSignals.ProcessMessages.connect(1, &scan_messages_after, boost::signals2::at_back);
 
   uv_async_init(uv_default_loop(), &txmon_async, tx_notifier);