http - 如何在 BlackBerry 中捕获 HTTP 吞吐量？

Question

请帮我找出 BB 编程中的 HTTP 吞吐量和 HTTP 延迟。

Answer 1

您可以使用System.currentTimeMillis()获取代码中各个点的时间戳，然后使用这些值来计算时间。例如：

long start = System.currentTimeMillis();
HttpConnection connection = (HttpConnection) Connector.open(url);
long opened = System.currentTimeMillis();
String body = new String(IOUtilities.streamToBytes(connection.openInputStream()));
long done = System.currentTimeMillis();

long bytes = body.length();
float durationSeconds = (float)(done - opened) / 1000.0f;
float bytesPerSecond = bytes / durationSeconds;

System.out.println("Latency: " + (opened - start) + " ms");
System.out.println("Bandwidth: " + bytesPerSecond + " bytes per second");