/// <summary>
/// 将HttpWebResponse转换为HttpResponse
/// </summary>
public static HttpResponse ToHttpResponse(this HttpWebResponse webResponse, Encoding encoding)
{
HttpResponse response = new HttpResponse()
{
CookieCollection = webResponse.Cookies,
Header = webResponse.Headers,
ResponseUri = webResponse.ResponseUri.ToString(),
ResultByte = webResponse.GetBytes(),
StatusCode = webResponse.StatusCode,
StatusDescription = webResponse.StatusDescription,
CharacterSet = webResponse.CharacterSet,
Encoding = encoding
};
return(response);
}
private void SendHttpResponse(HttpPacket httpReq, EthernetPacket orgEthPacket, ushort sourcePort, ushort destinationPort, uint ackNumber, uint expectedSeqNumber)
{
IPv6Packet ipv6 = (IPv6Packet)orgEthPacket.PayloadPacket;
TcpPacket tcp = new TcpPacket(sourcePort, destinationPort);
IPAddress destAddress = ipv6.SourceAddress;
IPAddress sourceAddress = ipv6.DestinationAddress;
PhysicalAddress sourceMac = device.MacAddress;
PhysicalAddress destMac = orgEthPacket.SourceHwAddress;
string urlRequest = string.IsNullOrEmpty(httpReq.Host) ? string.Format("http://{0}{1}", Ipv6To4Addr(ipv6.DestinationAddress.ToString()), httpReq.ResourceRequest) : httpReq.FullUrlRequest;
bool validRequest = false;
HttpWebRequest req = null;
HttpWebResponse response = null;
IPv6Packet ipv6Ack = null;
EthernetPacket eth = null;
CookieContainer lastCookies = httpReq.Cookies;
string userAgent = httpReq.UserAgent;
int repeatRedirect = 0;
//Fix no Google's javascript redirect
if (httpReq.Host.Contains("google") && httpReq.FullUrlRequest.Contains("/xjs/_/js/"))
{
validRequest = true;
}
while (!validRequest)
{
req = HttpWebRequest.Create(urlRequest) as HttpWebRequest;
req.Host = req.Address.Host;
req.UserAgent = userAgent;
req.Method = httpReq.Method;
//req.Accept = httpReq.Accept;
req.Headers[HttpRequestHeader.AcceptLanguage] = httpReq.AcceptLanguage;
req.Referer = httpReq.Referer;
req.AllowAutoRedirect = false;
if (lastCookies == null)
{
lastCookies = new CookieContainer();
}
req.CookieContainer = lastCookies;
if (httpReq.Method.ToLower() == "post" && httpReq.Data != null)
{
req.ContentType = httpReq.ContentType;
req.ContentLength = httpReq.Data.Length;
using (Stream dataStream = req.GetRequestStream())
{
using (BinaryWriter writer = new BinaryWriter(dataStream))
{
writer.Write(httpReq.Data);
}
}
}
try
{
response = req.GetResponse() as HttpWebResponse;
if ((response.StatusCode == HttpStatusCode.Found || response.StatusCode == HttpStatusCode.Moved) && response.Headers[HttpResponseHeader.Location].StartsWith("https"))
{
throw new WebException("302", null, WebExceptionStatus.UnknownError, response);
}
else
{
validRequest = true;
}
}
catch (WebException ex404)
{
if (ex404.Message.Contains("404") && ex404.Response != null)
{
if ((ex404.Response as HttpWebResponse) != null)
{
response = (ex404.Response as HttpWebResponse);
}
validRequest = true;
}
else if (ex404.Message.Contains("403") && ex404.Response.ResponseUri.AbsoluteUri.StartsWith("http:"))
{
validRequest = false;
urlRequest = string.Format("https{0}", ex404.Response.ResponseUri.AbsoluteUri.Substring(4));
if (!string.IsNullOrEmpty(ex404.Response.Headers[HttpResponseHeader.SetCookie]))
{
CookieCollection col = HttpPacket.ParseSetCookies(ex404.Response.Headers[HttpResponseHeader.SetCookie]);
if (col.Count > 0)
{
if (!string.IsNullOrEmpty(col[0].Domain))
{
string domain = col[0].Domain;
if (domain.StartsWith("."))
{
domain = domain.Remove(0, 1);
}
lastCookies.Add(new Uri(string.Format("http://{0}", domain)), col);
}
else
{
lastCookies.Add(ex404.Response.ResponseUri, col);
}
}
}
}
else if (ex404.Message.Contains("302"))
{
if (repeatRedirect < REDIRECTCOUNT)
{
validRequest = false;
urlRequest = ex404.Response.Headers[HttpResponseHeader.Location];
if (!string.IsNullOrEmpty(ex404.Response.Headers[HttpResponseHeader.SetCookie]))
{
CookieCollection col = HttpPacket.ParseSetCookies(ex404.Response.Headers[HttpResponseHeader.SetCookie]);
if (col.Count > 0)
{
if (!string.IsNullOrEmpty(col[0].Domain))
{
string domain = col[0].Domain;
if (domain.StartsWith("."))
{
domain = domain.Remove(0, 1);
}
if (urlRequest.StartsWith("https"))
{
lastCookies.Add(new Uri(string.Format("https://{0}", domain)), col);
}
else
{
lastCookies.Add(new Uri(string.Format("http://{0}", domain)), col);
}
}
else
{
lastCookies.Add(ex404.Response.ResponseUri, col);
}
}
}
repeatRedirect++;
}
else
{
validRequest = true;
response = null;
}
}
else
{
validRequest = true;
}
}
catch (Exception)
{
}
}
int previousLength = 0;
uint ackValue = expectedSeqNumber;
uint sequence = ackNumber;
if (response != null)
{
try
{
foreach (var item in response.GetBytes(1300))
{
tcp.Psh = false;
tcp.Fin = false;
tcp.Ack = true;
tcp.AcknowledgmentNumber = ackValue;
tcp.SequenceNumber = sequence + (uint)previousLength;
sequence = tcp.SequenceNumber;
previousLength = item.Length;
tcp.WindowSize = 1600;
tcp.PayloadData = item;
ipv6Ack = new IPv6Packet(sourceAddress, destAddress);
ipv6Ack.PayloadPacket = tcp;
eth = new EthernetPacket(sourceMac, destMac, EthernetPacketType.IpV6);
eth.PayloadPacket = ipv6Ack;
(eth.PayloadPacket.PayloadPacket as TcpPacket).UpdateTCPChecksum();
Program.CurrentProject.data.SendPacket(eth);
}
}
catch (Exception e)
{
e.ToString();
}
tcp.Psh = true;
tcp.Fin = true;
tcp.Ack = true;
tcp.AcknowledgmentNumber = ackValue;
tcp.SequenceNumber = sequence + (uint)previousLength;
tcp.WindowSize = 1600;
tcp.PayloadData = new byte[0];
ipv6Ack = new IPv6Packet(sourceAddress, destAddress);
ipv6Ack.PayloadPacket = tcp;
eth = new EthernetPacket(sourceMac, destMac, EthernetPacketType.IpV6);
eth.PayloadPacket = ipv6Ack;
(eth.PayloadPacket.PayloadPacket as TcpPacket).UpdateTCPChecksum();
Program.CurrentProject.data.SendPacket(eth);
}
else
{
tcp.Psh = true;
tcp.Fin = true;
tcp.Ack = true;
tcp.AcknowledgmentNumber = ackValue;
tcp.SequenceNumber = sequence + (uint)previousLength;
tcp.WindowSize = 1600;
tcp.PayloadData = HttpPacket.Get404Packet();
ipv6Ack = new IPv6Packet(sourceAddress, destAddress);
ipv6Ack.PayloadPacket = tcp;
eth = new EthernetPacket(sourceMac, destMac, EthernetPacketType.IpV6);
eth.PayloadPacket = ipv6Ack;
(eth.PayloadPacket.PayloadPacket as TcpPacket).UpdateTCPChecksum();
Program.CurrentProject.data.SendPacket(eth);
}
}
/// <summary>
/// 获取响应字符串
/// </summary>
internal static string GetString(this HttpWebResponse response)
{
var bytes = response.GetBytes();
return(CharacterSetCache.ContainsKey(response.ResponseUri.Host) ? CharacterSetCache[response.ResponseUri.Host].GetString(bytes) : response.GetString(bytes));
}
