From d09655d4780dbd444c737cbdb015c7eee268300d Mon Sep 17 00:00:00 2001
From: Tom Igoe <tigoe@tigoemac.itp.tsoa.nyu.edu>
Date: Mon, 12 Mar 2012 13:57:42 -0400
Subject: [PATCH 1/2] Updated WifiChatServer to clear out garbage characters

---
 .../WifiChatServer/WifiChatServer.ino         | 29 +++++++++++--------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/WiFi/examples/WifiChatServer/WifiChatServer.ino b/WiFi/examples/WifiChatServer/WifiChatServer.ino
index 441491f13..22b9e546a 100644
--- a/WiFi/examples/WifiChatServer/WifiChatServer.ino
+++ b/WiFi/examples/WifiChatServer/WifiChatServer.ino
@@ -14,24 +14,24 @@
  
  created 18 Dec 2009
  by David A. Mellis
- modified 4 Mar 2012
+ modified 12 Mar 2012
  by Tom Igoe
  
  */
 
-
 #include <SPI.h>
 #include <WiFi.h>
 
 char ssid[] = "YourNetwork"; //  your network SSID (name) 
 char pass[] = "password";    // your network password (use for WPA, or use as key for WEP)
+
 int keyIndex = 0;            // your network key Index number (needed only for WEP)
 
 int status = WL_IDLE_STATUS;
 
 WiFiServer server(23);
 
-boolean gotAMessage = false; // whether or not you got a message from the client yet
+boolean alreadyConnected = false; // whether or not the client was connected previously
 
 void setup() {
   // initialize serial:
@@ -55,20 +55,25 @@ void loop() {
   // wait for a new client:
   WiFiClient client = server.available();
 
+  
   // when the client sends the first byte, say hello:
   if (client) {
-    if (!gotAMessage) {
+    if (!alreadyConnected) {
+      // clead out the input buffer:
+      client.flush();    
       Serial.println("We have a new client");
       client.println("Hello, client!"); 
-      gotAMessage = true;
-    }
+      alreadyConnected = true;
+    } 
 
-    // read the bytes incoming from the client:
-    char thisChar = client.read();
-    // echo the bytes back to the client:
-    server.write(thisChar);
-    // echo the bytes to the server as well:
-    Serial.print(thisChar);
+    if (client.available() > 0) {
+      // read the bytes incoming from the client:
+      char thisChar = client.read();
+      // echo the bytes back to the client:
+      server.write(thisChar);
+      // echo the bytes to the server as well:
+      Serial.write(thisChar);
+    }
   }
 }
 

From 71ee20314fbdc15da75dda68f1e993881e90f61a Mon Sep 17 00:00:00 2001
From: Tom Igoe <tigoe@tigoemac.itp.tsoa.nyu.edu>
Date: Mon, 12 Mar 2012 14:35:02 -0400
Subject: [PATCH 2/2] Re-formatted ScanNetworks output

---
 WiFi/examples/ScanNetworks/ScanNetworks.ino | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/WiFi/examples/ScanNetworks/ScanNetworks.ino b/WiFi/examples/ScanNetworks/ScanNetworks.ino
index c1267e672..ecae9b300 100644
--- a/WiFi/examples/ScanNetworks/ScanNetworks.ino
+++ b/WiFi/examples/ScanNetworks/ScanNetworks.ino
@@ -10,7 +10,7 @@
  
  created 13 July 2010
  by dlf (Metodo2 srl)
- modified 9 Mar 2012
+ modified 12 Mar 2012
  by Tom Igoe
  */
 
@@ -26,7 +26,6 @@ void setup() {
   Serial.println("Initializing Wifi...");
   printMacAddress();
 
-
   // scan for existing networks:
   Serial.println("Scanning available networks...");
   listNetworks();
@@ -72,13 +71,12 @@ void listNetworks() {
   for (int thisNet = 0; thisNet<numSsid; thisNet++) {
     Serial.print(thisNet);
     Serial.print(") ");
-    Serial.println(WiFi.SSID(thisNet));
-    Serial.print("Signal Strength: ");
+    Serial.print(WiFi.SSID(thisNet));
+    Serial.print("\tSignal: ");
     Serial.print(WiFi.RSSI(thisNet));
-    Serial.println("dBm");
-    Serial.print("Encryption Type: ");
+    Serial.print(" dBm");
+    Serial.print("\tEncryption: ");
     Serial.println(WiFi.encryptionType(thisNet));
-    Serial.println();
   }
 }