設置方法：
勾選Rules –> Performances –> Simulate Modem Speeds
設置網速：
Rules – Customize Rules（快捷鍵Ctrl + R）打開Fiddler ScriptEditor，或者直接點開右側主頁簽的FiddlerScript
打開該文件后，m_SimulateModem標志位
注：
①、request-trickle-delay中的值代表每KB的數據被上傳時會被延時多少毫秒
②、response-trickle-delay則對應下載時每KB的數據會被延時多少毫
舉個栗子：比如要模擬上傳速度100KBps的網絡，那上傳延遲就是1KB/100KBps=0.01s=10ms，就改成10
隨機延時量設置
static function randInt(min, max) {
return Math.round(Math.random()*(max-min)+min);
}
if (m_SimulateModem) {
// Delay sends by 300ms per KB uploaded.
oSession["request-trickle-delay"] = ""+randInt(100,200);
// Delay receives by 150ms per KB downloaded.
oSession["response-trickle-delay"] = ""+randInt(1,50);
}
