protected virtual HttpWebResponse RequestInTry(WebRequestParameter parameter, int tryIndex, CancellationToken?cancelToken = null)
{
Exception innerException = null;
try
{
var request = this.CreateRequest(parameter);
this.WriteReuqestParameter(request, parameter.WriteParameter);
this.OnRequesting(new WebRequestEventArgs(request, parameter, tryIndex));
HttpWebResponse response = null;
try
{
cancelToken?.Register(() => request.Abort());
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException e)
{
innerException = e;
response = (HttpWebResponse)e.Response;
}
if (response != null)
{
this.Cookies.Add(response.Cookies);
try
{
this.OnResponsed(new WebResponseEventArgs(request, parameter, tryIndex, response));
return(response);
}
catch (Exception e)
{
innerException = e;
ObjectUtils.DisposeQuietly(response);
}
}
}
catch (Exception e)
{
innerException = e;
}
throw new WebNetworkException("", innerException);
}
public virtual HttpWebResponse Request(WebRequestParameter parameter, CancellationTokenSource cancelTokenSource = null)
{
Exception lastException = null;
for (int i = 0; i < parameter.RetryCount + 1; i++)
{
try
{
var token = cancelTokenSource?.Token;
return(this.RequestInTry(parameter, i, token));
}
catch (Exception e)
{
lastException = e;
}
}
throw new WebNetworkException("", lastException);
}
public virtual HttpWebRequest CreateRequest(WebRequestParameter parameter)
{
var uri = new Uri(parameter.Uri);
var request = (HttpWebRequest)WebRequest.Create(uri);
var headers = request.Headers;
request.Credentials = parameter.Credentials;
request.Method = parameter.Method;
request.ProtocolVersion = parameter.ProtocolVersion;
request.Host = uri.Host;
request.KeepAlive = parameter.KeepAlive;
headers["Cache-Control"] = parameter.CacheControl;
request.UserAgent = parameter.UserAgent;
request.Accept = parameter.Accept;
headers["DNT"] = parameter.DNT;
headers["Accept-Language"] = parameter.AcceptLanguage;
if (parameter.ContentType != null)
{
request.ContentType = parameter.ContentType;
}
foreach (var pair in parameter.Headers)
{
headers[pair.Key] = pair.Value;
}
var cookies = new CookieContainer();
cookies.Add(this.Cookies.GetCookies(uri));
if (parameter.CookieContainer != null)
{
cookies.Add(parameter.CookieContainer.GetCookies(uri));
}
if (parameter.Referer != null)
{
request.Referer = parameter.Referer;
}
request.CookieContainer = cookies;
request.AllowAutoRedirect = parameter.AllowAutoRedirect;
var proxy = parameter.Proxy;
if (proxy != null)
{
var proxyImpl = new WebProxy(proxy.Hostname, proxy.Port)
{
BypassProxyOnLocal = false
};
request.Proxy = proxyImpl;
}
int timeout = parameter.Timeout;
request.ReadWriteTimeout = timeout;
request.Timeout = timeout;
request.ContinueTimeout = timeout;
return(request);
}
public WebRequestEventArgs(HttpWebRequest request, WebRequestParameter parameter, int tryIndex)
{
this.Request = request;
this.Parameter = parameter;
this.TryIndex = tryIndex;
}
public WebResponseEventArgs(HttpWebRequest request, WebRequestParameter parameter, int tryIndex, HttpWebResponse response) : base(request, parameter, tryIndex)
{
this.Response = response;
}
