/// <summary>创建客户端会话</summary>
/// <param name="uri"></param>
/// <returns></returns>
protected virtual HttpWebRequest Create(String uri)
{
var req = WebRequest.Create(uri) as HttpWebRequest;
req.UserAgent = UserAgent;
if (AutomaticDecompression != DecompressionMethods.None)
{
req.AutomaticDecompression = AutomaticDecompression;
}
if (!Accept.IsNullOrEmpty())
{
req.Accept = Accept;
}
if (!AcceptLanguage.IsNullOrEmpty())
{
req.Headers[HttpRequestHeader.AcceptLanguage + ""] = AcceptLanguage;
}
if (!Referer.IsNullOrEmpty())
{
req.Referer = Referer;
}
return(req);
}
/// <summary>创建客户端会话</summary>
/// <returns></returns>
public virtual HttpClientX EnsureCreate()
{
var http = _client;
if (http == null)
{
var p = Proxy;
if (p == null && !ProxyAddress.IsNullOrEmpty())
{
Proxy = p = new WebProxy(ProxyAddress);
}
if (p == null)
{
http = new HttpClientX();
}
else
{
http = new HttpClientX(new HttpClientHandler {
Proxy = p
});
}
_client = http;
Request = http.DefaultRequestHeaders;
http.Timeout = new TimeSpan(0, 0, 0, 0, Timeout);
}
var req = http.DefaultRequestHeaders;
if (!UserAgent.IsNullOrEmpty())
{
req.UserAgent.ParseAdd(UserAgent);
}
if (!Accept.IsNullOrEmpty())
{
req.Accept.ParseAdd(Accept);
}
if (!AcceptLanguage.IsNullOrEmpty())
{
req.AcceptLanguage.ParseAdd(AcceptLanguage);
}
if (AutomaticDecompression != DecompressionMethods.None)
{
req.AcceptEncoding.ParseAdd("gzip, deflate");
}
if (!Referer.IsNullOrEmpty())
{
req.Referrer = new Uri(Referer);
}
GetCookie();
return(http);
}
/// <summary>
/// 初始化请求
/// </summary>
/// <param name="context"></param>
internal void InitializeWebRequest(HttpContext context)
{
var request = context.WebRequest;
if (!Accept.IsNullOrEmpty())
{
request.Accept = Accept;
}
if (!ContentType.IsNullOrEmpty())
{
request.ContentType = ContentType;
}
else if (Method == HttpMethod.POST)
{
request.ContentType = "application/x-www-form-urlencoded";
}
if (IfModifiedSince != null)
{
request.IfModifiedSince = this.IfModifiedSince.Value;
}
if (Range != null)
{
request.AddRange(this.Range.Value.Key, this.Range.Value.Value);
}
if (AppendAjaxHeader)
{
request.Headers.Add("X-Requested-With", "XMLHttpRequest");
}
request.KeepAlive = KeepAlive;
if (Timeout > 0)
{
request.Timeout = request.ReadWriteTimeout = Timeout.Value;
}
#if NET4
if (!string.IsNullOrEmpty(Host))
{
request.Host = Host;
Host = null;
}
#endif
request.AllowAutoRedirect = AllowAutoRedirect;
request.AutomaticDecompression = DecompressionMethods.None;
if (ReferUri != null)
{
request.Referer = ReferUri.ToString();
}
}
/// <summary>创建客户端会话</summary>
/// <returns></returns>
protected virtual HttpClientX Create()
{
var http = _client;
if (http == null)
{
http = _client = new HttpClientX();
Request = http.DefaultRequestHeaders;
http.Timeout = new TimeSpan(0, 0, 0, 0, Timeout);
}
var req = http.DefaultRequestHeaders;
if (!UserAgent.IsNullOrEmpty())
{
req.UserAgent.ParseAdd(UserAgent);
}
if (!Accept.IsNullOrEmpty())
{
req.Accept.ParseAdd(Accept);
}
if (!AcceptLanguage.IsNullOrEmpty())
{
req.AcceptLanguage.ParseAdd(AcceptLanguage);
}
if (AutomaticDecompression != DecompressionMethods.None)
{
req.AcceptEncoding.ParseAdd("gzip, deflate");
}
if (!Referer.IsNullOrEmpty())
{
req.Referrer = new Uri(Referer);
}
GetCookie();
return(http);
}
/// <summary>创建客户端会话</summary>
/// <returns></returns>
public virtual HttpClient EnsureCreate()
{
var http = _client;
if (http == null)
{
var p = Proxy;
if (p == null && !ProxyAddress.IsNullOrEmpty())
{
Proxy = p = new WebProxy(ProxyAddress);
}
var handler = new HttpClientHandler();
if (p != null)
{
handler.UseProxy = true;
handler.Proxy = p;
}
else
{
handler.UseProxy = false;
handler.Proxy = null;
}
if (AutomaticDecompression != DecompressionMethods.None)
{
handler.AutomaticDecompression = AutomaticDecompression;
}
http = new HttpClient(handler);
_client = http;
Request = http.DefaultRequestHeaders;
http.Timeout = new TimeSpan(0, 0, 0, 0, Timeout);
}
var req = http.DefaultRequestHeaders;
if (!UserAgent.IsNullOrEmpty())
{
req.UserAgent.ParseAdd(UserAgent);
}
if (!Accept.IsNullOrEmpty())
{
req.Accept.ParseAdd(Accept);
}
if (!AcceptLanguage.IsNullOrEmpty())
{
req.AcceptLanguage.ParseAdd(AcceptLanguage);
}
if (AutomaticDecompression != DecompressionMethods.None)
{
req.AcceptEncoding.ParseAdd("gzip, deflate");
}
if (!Referer.IsNullOrEmpty())
{
req.Referrer = new Uri(Referer);
}
if (KeepAlive)
{
req.Connection.ParseAdd("keep-alive");
}
GetCookie(http);
return(http);
}
/// <summary>创建头部</summary>
/// <param name="length"></param>
/// <returns></returns>
protected override String BuildHeader(Int32 length)
{
if (Method.IsNullOrEmpty())
{
Method = length > 0 ? "POST" : "GET";
}
// 分解主机和资源
var host = "";
var uri = Url;
if (uri == null)
{
uri = new Uri("/");
}
if (uri.Scheme.EqualIgnoreCase("http", "ws"))
{
if (uri.Port == 80)
{
host = uri.Host;
}
else
{
host = "{0}:{1}".F(uri.Host, uri.Port);
}
}
else if (uri.Scheme.EqualIgnoreCase("https"))
{
if (uri.Port == 443)
{
host = uri.Host;
}
else
{
host = "{0}:{1}".F(uri.Host, uri.Port);
}
}
// 构建头部
var sb = Pool.StringBuilder.Get();
sb.AppendFormat("{0} {1} HTTP/1.1\r\n", Method, uri.PathAndQuery);
sb.AppendFormat("Host:{0}\r\n", host);
if (!Accept.IsNullOrEmpty())
{
sb.AppendFormat("Accept:{0}\r\n", Accept);
}
if (Compressed)
{
sb.AppendLine("Accept-Encoding:gzip, deflate");
}
if (!AcceptLanguage.IsNullOrEmpty())
{
sb.AppendFormat("AcceptLanguage:{0}\r\n", AcceptLanguage);
}
if (!UserAgent.IsNullOrEmpty())
{
sb.AppendFormat("User-Agent:{0}\r\n", UserAgent);
}
// 内容长度
if (length > 0)
{
sb.AppendFormat("Content-Length:{0}\r\n", length);
}
if (!ContentType.IsNullOrEmpty())
{
sb.AppendFormat("Content-Type:{0}\r\n", ContentType);
}
if (KeepAlive)
{
sb.AppendLine("Connection:keep-alive");
}
if (!Referer.IsNullOrEmpty())
{
sb.AppendFormat("Referer:{0}\r\n", Referer);
}
foreach (var item in Headers)
{
sb.AppendFormat("{0}:{1}\r\n", item.Key, item.Value);
}
sb.AppendLine();
return(sb.Put(true));
}
/// <summary>
/// 初始化请求
/// </summary>
/// <param name="context"></param>
internal void InitializeWebRequest([NotNull] HttpContext context)
{
var request = context.WebRequest;
if (!Accept.IsNullOrEmpty())
{
request.Accept = Accept;
}
if (!UserAgent.IsNullOrEmpty())
{
request.UserAgent = UserAgent;
}
if (!AcceptEncoding.IsNullOrEmpty())
{
request.Headers.Add(HttpRequestHeader.AcceptEncoding, AcceptEncoding);
}
request.ServicePoint.Expect100Continue = false;
request.KeepAlive = KeepAlive;
request.ServicePoint.UseNagleAlgorithm = UseNagleAlgorithm;
request.AllowWriteStreamBuffering = AllowWriteStreamBuffering;
Authorization?.SetRequest(context.WebRequest, context);
if (Range != null)
{
var range = Range.Value;
#if NET_GT_4
if (range.Value.HasValue)
{
request.AddRange(range.Key, range.Value.Value);
}
else
{
request.AddRange(range.Key);
}
#else
if (range.Value.HasValue)
{
request.AddRange(range.Key, range.Value.Value);
}
else
{
request.AddRange(range.Key);
}
#endif
}
if (AppendAjaxHeader)
{
request.Headers.Add("X-Requested-With", "XMLHttpRequest");
}
request.KeepAlive = KeepAlive;
if (Timeout.HasValue)
{
request.Timeout = Timeout.Value;
}
if (ReadWriteTimeout.HasValue)
{
request.ReadWriteTimeout = ReadWriteTimeout.Value;
}
if (!TransferEncoding.IsNullOrEmpty())
{
request.TransferEncoding = TransferEncoding;
request.SendChunked = true;
}
#if NET_GT_4
if (!string.IsNullOrEmpty(Host))
{
request.Host = Host;
}
#endif
request.AllowAutoRedirect = AllowAutoRedirect;
request.AutomaticDecompression = DecompressionMethods.None;
#pragma warning disable 618
if (ReferUri != null)
{
request.Referer = ReferUri.OriginalString;
}
#pragma warning restore 618
if (!Referer.IsNullOrEmpty())
{
request.Referer = Referer;
}
if (HttpRequestCacheLevel != null)
{
request.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Value);
}
else if (HttpCacheAgeControl != null)
{
request.CachePolicy = new HttpRequestCachePolicy(HttpCacheAgeControl.Value, MaxAge ?? TimeSpan.Zero, AgeOrFreshOrStale ?? TimeSpan.Zero, SyncTime ?? DateTime.Now);
}
if (IfModifiedSince != null)
{
request.IfModifiedSince = IfModifiedSince.Value;
}
//copy headers
if (Headers != null)
{
foreach (var header in Headers.AllKeys)
{
request.Headers[header] = Headers[header];
}
}
if (_proxySet)
{
request.Proxy = _webProxy;
}
request.PreAuthenticate = PreAuthenticate;
//初始化兼容参数
if (request.Proxy != null)
{
if (Context.Client.Setting.ForceStreamBufferWithProxy)
{
//如果有代理，则默认允许流缓冲。如果不允许，则很可能会导致代理身份验证失败。
request.AllowWriteStreamBuffering = true;
}
if (request.Proxy is WebProxy)
{
var proxy = request.Proxy as WebProxy;
if (!proxy.UseDefaultCredentials && proxy.Credentials is NetworkCredential && request.Headers["Proxy-Authorization"].IsNullOrEmpty())
{
var cred = proxy.Credentials as NetworkCredential;
request.Headers.Set(HttpRequestHeader.ProxyAuthorization, "Basic " + Convert.ToBase64String(Encoding.GetBytes(cred.UserName + ":" + cred.Password)));
}
}
}
//如果设置了证书，则添加
if (X509Certificates?.Length > 0)
{
request.ClientCertificates.AddRange(X509Certificates);
}
OnPostInitRequest(new PostInitRequestEventArgs(request, context, context.Client));
}