/// <summary>
/// 创建并开始异步请求数据。
/// </summary>
/// <param name="contentType">设置 Content-Type Http 标头的值。</param>
/// <param name="method">设置请求的方法。</param>
/// <param name="url">标识 Internet 资源的 URI。</param>
/// <param name="body">请求的内容体。</param>
/// <param name="action">调用成功的回调函数。</param>
/// <exception cref="System.ArgumentNullException">[HttpClient].[Request].contentType or
/// [HttpClient].[Request].url or [HttpClient].[Request].method</exception>
public void Request(string contentType, string method, string url, byte[] body, Action <ResponseInfo> action)
{
if (body == null)
{
body = new byte[0];
}
if (contentType.IsNullOrWhiteSpace())
{
throw new ArgumentNullException("[HttpClient].[Request].contentType");
}
if (url.IsNullOrWhiteSpace())
{
throw new ArgumentNullException("[HttpClient].[Request].url");
}
else if (!BaseDirectory.IsNullOrWhiteSpace())
{
var hasAppendBase = BaseDirectory.EndsWith("//");
var hasInsertUrl = url.StartsWith("//");
if (!(hasAppendBase || hasInsertUrl))
{
url = string.Concat(BaseDirectory, "//", url);
}
else
{
url = string.Concat(BaseDirectory, url);
}
}
if (method.IsNullOrWhiteSpace())
{
throw new ArgumentNullException("[HttpClient].[Request].method");
}
else
{
method = method.ToUpper();
}
if (method != "GET" && method != "POST" && method != "DELETE" && method != "PUT")
{
throw new ArgumentException("[HttpClient].[Request].method is invalid method.");
}
var client = (HttpWebRequest)WebRequest.Create(new Uri(url));
client.CookieContainer = Cookies;
client.Method = method;
client.Accept = Accept;
client.ContentType = contentType;
client.UserAgent = UserAgent;
client.Proxy = Proxy;
if (Setting != null)
{
client.AutomaticDecompression = Setting.DecompressionMethod;
client.Credentials = Setting.Credentials;
}
foreach (var item in Headers)
{
client.Headers.Add(item.Key, item.Value);
}
if (method == "POST" || method == "PUT" || method == "DELETE")
{
using (var stream = client.GetRequestStream())
{
stream.Write(body, 0, body.Length);
stream.Flush();
}
}
using (var response = GetResponseObject(client.GetResponse() as HttpWebResponse))
{
action(response);
}
}