Program: 168062
Project: 168062
Buggy source:
private boolean connResponse(Channel channel){
  try {
    String host=null;
    int port;
    String method=channel.getMethod();
    if (responseChannel == null) {
      SocketChannel socketChannel=null;
      if ("String_Node_Str".equals(method)) {
        host=channel.getHost();
        port=channel.getPort();
        socketChannel=connect(host,port);
      }
 else {
        host=channel.getHost();
        port=channel.getPort();
        socketChannel=connect(host,port);
      }
      if (socketChannel == null) {
        return false;
      }
      responseChannel=new Channel(false);
      responseChannel.setListener(this);
      responseChannel.setSocket(socketChannel);
      Selector selector=ProxyServer.getInstance().getSeletor();
      SelectionKey sk=socketChannel.register(selector,SelectionKey.OP_READ,this);
      responseChannel.setSelectionKey(sk);
    }
 else {
      Log.d(TAG,"String_Node_Str" + responseChannel.getName());
      responseChannel.reset();
    }
    StringBuffer stringBuffer=new StringBuffer();
    if ("String_Node_Str".equals(method)) {
      stringBuffer.append(CONNECT_OK);
      responseChannel.setStatus(Status.CONTENT);
      byte[] sendBytes=stringBuffer.toString().getBytes();
      ByteBuffer byteBuffer=ByteBuffer.wrap(sendBytes);
      requestChannel.write(byteBuffer);
    }
 else {
      stringBuffer.append(method + "String_Node_Str");
      String url=channel.getUrl();
      Uri uri=Uri.parse(url);
      String path=uri.getPath();
      stringBuffer.append(path).append("String_Node_Str").append("String_Node_Str").append(CRLF);
      Map<String,String> headers=channel.getHeaders();
      Iterator<String> iterator=headers.keySet().iterator();
      stringBuffer.append("String_Node_Str").append(url).append(CRLF);
      while (iterator.hasNext()) {
        String key=iterator.next();
        stringBuffer.append(key).append("String_Node_Str").append(headers.get(key)).append(CRLF);
      }
      stringBuffer.append(CRLF);
      String text=stringBuffer.toString();
      Log.d(TAG,text);
      byte[] sendBytes=text.getBytes();
      ByteBuffer byteBuffer=ByteBuffer.wrap(sendBytes);
      responseChannel.write(byteBuffer);
    }
  }
 catch (  Exception e) {
    Log.e(TAG,"String_Node_Str",e);
    return false;
  }
  return true;
}

Fixed version (ground truth):
private boolean connResponse(Channel channel){
  try {
    String host=null;
    int port;
    String method=channel.getMethod();
    if (responseChannel == null) {
      SocketChannel socketChannel=null;
      if ("String_Node_Str".equals(method)) {
        host=channel.getHost();
        port=channel.getPort();
        socketChannel=connect(host,port);
      }
 else {
        host=channel.getHost();
        port=channel.getPort();
        socketChannel=connect(host,port);
      }
      if (socketChannel == null) {
        return false;
      }
      responseChannel=new Channel(false);
      responseChannel.setListener(this);
      responseChannel.setSocket(socketChannel);
      Selector selector=ProxyServer.getInstance().getSeletor();
      SelectionKey sk=socketChannel.register(selector,SelectionKey.OP_READ,this);
      responseChannel.setSelectionKey(sk);
    }
 else {
      Log.d(TAG,"String_Node_Str" + responseChannel.getName());
      responseChannel.reset();
    }
    StringBuffer stringBuffer=new StringBuffer();
    if ("String_Node_Str".equals(method)) {
      stringBuffer.append(CONNECT_OK);
      responseChannel.setStatus(Status.CONTENT);
      byte[] sendBytes=stringBuffer.toString().getBytes();
      ByteBuffer byteBuffer=ByteBuffer.wrap(sendBytes);
      requestChannel.write(byteBuffer);
    }
 else {
      stringBuffer.append(method + "String_Node_Str");
      String url=channel.getUrl();
      if (!url.startsWith("String_Node_Str")) {
        url=url.substring(url.indexOf('/',8));
      }
      Log.d(TAG,"String_Node_Str" + url);
      stringBuffer.append(url).append("String_Node_Str").append(channel.getProtocol()).append(CRLF);
      Map<String,String> headers=channel.getHeaders();
      Iterator<String> iterator=headers.keySet().iterator();
      while (iterator.hasNext()) {
        String key=iterator.next();
        stringBuffer.append(key).append("String_Node_Str").append(headers.get(key)).append(CRLF);
      }
      stringBuffer.append(CRLF);
      String text=stringBuffer.toString();
      Log.d(TAG,text);
      byte[] sendBytes=text.getBytes();
      ByteBuffer byteBuffer=ByteBuffer.wrap(sendBytes);
      responseChannel.write(byteBuffer);
    }
  }
 catch (  Exception e) {
    Log.e(TAG,"String_Node_Str",e);
    return false;
  }
  return true;
}