fixed client demo (#325)

* fixed client demo

README.md

@@ -132,7 +132,7 @@ Now that your singlenode or multinode testnet is up and running, in a separate s
 the JSON configuration file here, not the genesis ledger.
 
 ```bash
-$ ./multinode-demo/client.sh ubuntu@10.0.1.51:~/solana #The leader machine
+$ ./multinode-demo/client.sh ubuntu@10.0.1.51:~/solana 2 #The leader machine and the total number of nodes in the network
 ```
 
 What just happened? The client demo spins up several threads to send 500,000 transactions

multinode-demo/client.sh

@@ -1,11 +1,15 @@
 #!/bin/bash -e
 
 if [[ -z "$1" ]]; then
-  echo "usage: $0 [network path to solana repo on leader machine]"
+  echo "usage: $0 [network path to solana repo on leader machine] [number of nodes in the network if greater then 1]"
   exit 1
 fi
 
 LEADER="$1"
+COUNT="$2"
+if [[ -z "$2" ]]; then
+    COUNT=1
+fi
 
 set -x
 export RUST_LOG=solana=info
@@ -13,4 +17,4 @@ rsync -v -e ssh "$LEADER/leader.json" .
 rsync -v -e ssh "$LEADER/mint-demo.json" .
 
 cargo run --release --bin solana-client-demo -- \
-  -l leader.json < mint-demo.json 2>&1 | tee client.log
+  -l leader.json -n $COUNT -d < mint-demo.json 2>&1 | tee client.log

src/bin/client-demo.rs

@@ -109,9 +109,10 @@ fn main() {
         &client_addr,
         &leader,
         signal.clone(),
-        num_nodes + 2,
+        num_nodes,
         &mut c_threads,
     );
+    assert_eq!(validators.len(), num_nodes);
 
     if stdin_isatty() {
         eprintln!("nothing found on stdin, expected a json file");
@@ -296,26 +297,27 @@ fn converge(
         gossip_send_socket,
         exit.clone(),
     ).expect("DataReplicator::new");
-    //wait for the network to converge
+    let mut rv = vec![];
+    //wait for the network to converge, 30 seconds should be plenty
     for _ in 0..30 {
-        let min = spy_ref.read().unwrap().convergence();
-        if num_nodes as u64 == min {
-            println!("converged!");
+        let v: Vec<ReplicatedData> = spy_ref
+            .read()
+            .unwrap()
+            .table
+            .values()
+            .into_iter()
+            .filter(|x| x.requests_addr != daddr)
+            .cloned()
+            .collect();
+        if v.len() >= num_nodes {
+            println!("CONVERGED!");
+            rv.extend(v.into_iter());
             break;
         }
         sleep(Duration::new(1, 0));
     }
     threads.extend(data_replicator.thread_hdls.into_iter());
-    let v: Vec<ReplicatedData> = spy_ref
-        .read()
-        .unwrap()
-        .table
-        .values()
-        .into_iter()
-        .filter(|x| x.requests_addr != daddr)
-        .map(|x| x.clone())
-        .collect();
-    v.clone()
+    rv
 }
 
 fn read_leader(path: String) -> ReplicatedData {