Added serve_pages test.

direct_test/simplest_http_response/serve_pages.dart

@@ -0,0 +1,36 @@
+import 'dart:io';
+import 'dart:typed_data';
+
+
+respond(socket, buffer) {
+  var body = "Some <b>sample</b> text.",
+    header = "HTTP/1.1 200 OK\nContent-Type: text/html\nContent-Length: ",
+    s = "${header}${body.length}\n\n${body}";
+  var len = s.length, i, a = new Uint8List(len);
+  for (i = 0; i < len; i++) {
+    a[i] = s.codeUnitAt(i);
+  }
+  socket.write(a.buffer);
+}
+
+handleServerSocket(socket) {
+  var buffer;
+  while (true) {
+    buffer = socket.readNext();
+    if (buffer == null) {
+      break;
+    }
+    respond(socket, buffer);
+    socket.close();
+    break;
+  }
+}
+
+main() {
+  var port = 8777,
+    server = new ServerSocket("127.0.0.1", port);
+  print("Starting server on port $port.");
+  while (true) {
+    server.spawnAccept(handleServerSocket);
+  }
+}