HttpUrlConnection的影响。setChunkedStreamingMode

我不太了解 HttpUrlConnection.setChunkedStreamingMode

我有以下示例代码:

HttpURLConnection conn = getHttpURLConnection(_url);
conn.setChunkedStreamingMode(4096); //4k
conn.setConnectTimeout(3000);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("POST");
OutputStream out = conn.getOutputStream();
byte[] buffer = new byte[1024 * 10];//10k
FileInputStream in= new FileInputStream(file); //Write the content of the file to the server
int len;
while ((len = in.read(buffer)) != -1) {
    out.write(buffer, 0, len);
}

out.flush();
in.close();

比如说,文件大小是101k,我将块大小设置为4096。

1. HttpUrlConnection将在每次写入时向服务器发送4096字节?最后一次是1公里?

3. 如果我在代码中禁用ChunkedStreamMode,与我设置的4096代码相比,效果如何?