/// <summary>
/// 构造新的HttpClient实例
/// </summary>
/// <param name="url">要获取的资源的地址</param>
/// <param name="context">Cookie及Referer</param>
/// <param name="keepContext">是否自动在不同的请求间保留Cookie, Referer</param>
public HttpClient(string url, HttpClientContext context, bool keepContext)
{
this.url = url;
this.context = context;
this.keepContext = keepContext;
this.Language = CultureInfo.CreateSpecificCulture("zh-CN");//EN-US
if (this.context == null)
{
this.context = new HttpClientContext();
}
// 默认重试次数为2
this.RetryTime = 2;
}
/// <summary>
/// 清空PostingData, Files, StartPoint, EndPoint, headers, 并把Verb设置为Get.
/// 在发出一个包含上述信息的请求后,必须调用此方法或手工设置相应属性以使下一次请求不会受到影响.
/// </summary>
public void ClearHttpClientState()
{
if (MemoryStream != null)
{
MemoryStream.Close();
MemoryStream = null;
}
if (this.webRequest != null)
{
this.webRequest.Abort();
this.webRequest = null;
}
if (this.webResponse != null)
{
this.webResponse.Close();
this.webResponse = null;
}
if (this.files != null)
{
this.files.Clear();
}
if (this.postData != null)
{
this.postData.Clear();
}
this.context = null;
this.headers = null;
this.httpMethod = HttpMethod.Get;
this.contentLength = -1;
this.startPoint = 0;
this.endPoint = 0;
}
/// <summary>
/// 构造新的HttpClient实例
/// </summary>
/// <param name="url">要获取的资源的地址</param>
/// <param name="context">Cookie及Referer</param>
public HttpClient(string url, HttpClientContext context)
: this(url, context, false)
{
}