Multinode fixes and test

* Replace magic numbers for 64k event size
* Fix gossip, dont ping yourself
* Retransmit only to listening nodes
* Multinode test in stub marked unstable

src/bin/testnode.rs

@@ -76,6 +76,8 @@ fn main() {
         })
     });
 
+    eprintln!("done parsing...");
+
     // The first item in the ledger is required to be an entry with zero num_hashes,
     // which implies its id can be used as the ledger's seed.
     let entry0 = entries.next().unwrap();
@@ -90,10 +92,14 @@ fn main() {
         None
     };
 
+    eprintln!("creating accountant...");
+
     let acc = Accountant::new_from_deposit(&deposit.unwrap());
     acc.register_entry_id(&entry0.id);
     acc.register_entry_id(&entry1.id);
 
+    eprintln!("processing entries...");
+
     let mut last_id = entry1.id;
     for entry in entries {
         last_id = entry.id;
@@ -101,6 +107,8 @@ fn main() {
         acc.register_entry_id(&last_id);
     }
 
+    eprintln!("creating networking stack...");
+
     let (input, event_receiver) = sync_channel(10_000);
     let historian = Historian::new(event_receiver, &last_id, Some(1000));
     let exit = Arc::new(AtomicBool::new(false));
@@ -115,6 +123,7 @@ fn main() {
         replicate_sock.local_addr().unwrap(),
         serve_sock.local_addr().unwrap(),
     );
+    eprintln!("starting server...");
     let threads =
         AccountantSkel::serve(&skel, d, serve_sock, gossip_sock, exit.clone(), stdout()).unwrap();
     eprintln!("Ready. Listening on {}", serve_addr);