服務器提交協議衝突 (The server committed a protocol violation.)

---解決方法 (放在 app.config / web.config)---

<system.net>
    <settings>
        <httpWebRequest useUnsafeHeaderParsing= "true " />
    </settings>
</system.net>

Ref:

http://mobile.dotblogs.com.tw/larrynung/archive/2012/07/02/73168.aspx

http://www.dotblogs.com.tw/henry/archive/2011/08/29/34635.aspx