Simple Google Dart HTTP Server

gistfile1.java

/**
 * Simple HTTP server on Dart
 * @see http://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/runtime/bin/socket_impl.dart
 *      http://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/runtime/bin/socket_stream.dart
 *
 * Based on http://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/samples/socket/SocketExample.dart
 * @author azproduction
 */
class HttpExample {

    final String host = "127.0.0.1";
    final int port = 50500;
    ServerSocket serverSocket;
    List receiveBuffer;
    List<int> output;

    HttpExample() {
        output = "HTTP/1.1 200 OK\nServer:Dart\n\n<h1>Works!</h1>".charCodes();
    }

    void go() {
        // initialize the server
        serverSocket = new ServerSocket(host, port, 5);
        if (serverSocket == null) {
            throw "can't get server socket";
        }

        serverSocket.setConnectionHandler(onConnect);
        print("accepting connections on ${host}:${port}");
    }

    void onSend() {

    }

    void onConnect() {
        List<int> receiveBuffer = new List();

        Socket receiveSocket = serverSocket.accept();
        InputStream inputStream = receiveSocket.inputStream;
        OutputStream outputStream = receiveSocket.outputStream;

        inputStream.readUntil(receiveBuffer, bufferReady);
        outputStream.write(output, 0, output.length, onSend);

        receiveSocket.close();
    }

    // receive buffer has been filled
    void bufferReady() {

    }
}

main() {
    new HttpExample().go();
}

ab test

Server Software:        Dart
Server Hostname:        127.0.0.1
Server Port:            50500

Document Path:          /
Document Length:        15 bytes

Concurrency Level:      4
Time taken for tests:   1.277 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      45000 bytes
HTML transferred:       15000 bytes
Requests per second:    782.88 [#/sec] (mean)
Time per request:       5.109 [ms] (mean)
Time per request:       1.277 [ms] (mean, across all concurrent requests)
Transfer rate:          34.40 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       2
Processing:     1    5   4.9      4      81
Waiting:        1    5   4.8      4      81
Total:          1    5   4.9      4      82

Percentage of the requests served within a certain time (ms)
  50%      4
  66%      4
  75%      5
  80%      6
  90%      8
  95%      9
  98%     13
  99%     14
 100%     82 (longest request)

There is a huge chance to get an error "apr_socket_recv: Connection reset by peer (54)" I wonder, why?