/// <summary>將 SOAP 資料以 POST 傳輸方式傳送至遠端伺服器</summary>
/// <param name="url">遠端伺服器網址</param>
/// <param name="xml">欲傳送的資料</param>
/// <param name="timeout">逾時時間，單位豪秒</param>
/// <returns>自遠端伺服器回傳的資料(或網頁內容)</returns>
/// <exception cref="ArgumentException">xml 參數不符合 SOAP 格式。</exception>
/// <exception cref="ArgumentNullException">url 參數為 null。 -或- xml 參數為 null。</exception>
/// <exception cref="ArgumentOutOfRangeException">逾時時間小於等於 0。</exception>
/// <exception cref="WebException">傳輸錯誤</exception>
public static string PostSOAP(string url, string xml, int timeout = 5000)
{
string result = null;
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
if (string.IsNullOrEmpty(xml))
{
throw new ArgumentNullException("xml");
}
if (timeout <= 0)
{
throw new ArgumentOutOfRangeException("timeout");
}
// 檢驗 SOAP 格式
Regex reg = new Regex("<soap(12)?:Envelope[\\s\\S]*</soap(12)?:Envelope>$", RegexOptions.Multiline);
Match m = reg.Match(xml);
if (!m.Success)
{
throw new ArgumentException("xml");
}
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
try { doc.LoadXml(xml); }
catch (System.Xml.XmlException) { throw new ArgumentException("xml"); }
using (ExtWebClient wc = new ExtWebClient(timeout))
{
if (string.IsNullOrEmpty(m.Groups[1].Value))
{
wc.Headers.Add("Content-Type", "text/xml; charset=utf-8");
}
else if (m.Groups[1].Value.Equals("12"))
{
wc.Headers.Add("Content-Type", "application/soap+xml; charset=utf-8");
}
wc.Encoding = System.Text.Encoding.UTF8;
result = wc.UploadString(url, xml);
}
return(result);
}
