XMLHttpRequest post数据时总时先发http头，再发数据，能让他别这么发吗？ 我设计的头和数据长度总和并没有超过MTU，结果他就自己给我拆成2个包发送，效率低，还搞的我服务器端不好处理。

The foundation that makes AJAX possible is the communication layer with the server. The most complete option for performing this communication is the JavaScript XMLHttpRequest object. If ...