Added some socket examples

CodeSamples/ch08/socket_client.js

@@ -33,11 +33,11 @@ function writeData(socket, data){
         writeData(socket, data);
       });
     })(socket, data);
-  }  
+  }
 }
 var Dwarves = getConnection("Dwarves");
 var Elves = getConnection("Elves");
 var Hobbits = getConnection("Hobbits");
 writeData(Dwarves, "More Axes");
 writeData(Elves, "More Arrows");
-writeData(Hobbits, "More Pipe Weed");
+writeData(Hobbits, "More Pipe Weed");

Samples/Sockets/socket_client.js

@@ -0,0 +1,43 @@
+var net = require('net');
+function getConnection(connName){
+  var client = net.connect({port: 8107, host:'localhost'}, function() {
+    console.log(connName + ' Connected: ');
+    console.log('   local = %s:%s', this.localAddress, this.localPort);
+    console.log('   remote = %s:%s', this.remoteAddress, this.remotePort);
+    this.setTimeout(500);
+    this.setEncoding('utf8');
+    this.on('data', function(data) {
+      console.log(connName + " From Server: " + data.toString());
+      this.end();
+    });
+    this.on('end', function() {
+      console.log(connName + ' Client disconnected');
+    });
+    this.on('error', function(err) {
+      console.log('Socket Error: ', JSON.stringify(err));
+    });
+    this.on('timeout', function() {
+      console.log('Socket Timed Out');
+    });
+    this.on('close', function() {
+      console.log('Socket Closed');
+    });
+  });
+  return client;
+}
+function writeData(socket, data){
+  var success = !socket.write(data);
+  if (!success){
+    (function(socket, data){
+      socket.once('drain', function(){
+        writeData(socket, data);
+      });
+    })(socket, data);
+  }  
+}
+var Dwarves = getConnection("Dwarves");
+var Elves = getConnection("Elves");
+var Hobbits = getConnection("Hobbits");
+writeData(Dwarves, "More Axes");
+writeData(Elves, "More Arrows");
+writeData(Hobbits, "More Pipe Weed");