public void EnumerateHeaders(OnHeaderEnumerationDelegate callback) { if (!HasHeader("Host")) { SetHeader("Host", CurrentUri.Authority); } if (IsRedirected && !HasHeader("Referer")) { AddHeader("Referer", Uri.ToString()); } if (!HasHeader("Accept-Encoding")) { AddHeader("Accept-Encoding", "gzip, identity"); } if (HasProxy && !HasHeader("Proxy-Connection")) { AddHeader("Proxy-Connection", (!IsKeepAlive) ? "Close" : "Keep-Alive"); } if (!HasHeader("Connection")) { AddHeader("Connection", (!IsKeepAlive) ? "Close, TE" : "Keep-Alive, TE"); } if (!HasHeader("TE")) { AddHeader("TE", "identity"); } if (!HasHeader("User-Agent")) { AddHeader("User-Agent", "VRC.Core.BestHTTP"); } long num = -1L; if (UploadStream == null) { byte[] entityBody = GetEntityBody(); num = ((entityBody != null) ? entityBody.Length : 0); if (RawData == null && (FormImpl != null || (FieldCollector != null && !FieldCollector.IsEmpty))) { SelectFormImplementation(); if (FormImpl != null) { FormImpl.PrepareRequest(this); } } } else { num = UploadStreamLength; if (num == -1) { SetHeader("Transfer-Encoding", "Chunked"); } if (!HasHeader("Content-Type")) { SetHeader("Content-Type", "application/octet-stream"); } } if (num != -1 && !HasHeader("Content-Length")) { SetHeader("Content-Length", num.ToString()); } if (HasProxy && Proxy.Credentials != null) { switch (Proxy.Credentials.Type) { case AuthenticationTypes.Basic: SetHeader("Proxy-Authorization", "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(Proxy.Credentials.UserName + ":" + Proxy.Credentials.Password))); break; case AuthenticationTypes.Unknown: case AuthenticationTypes.Digest: { Digest digest = DigestStore.Get(Proxy.Address); if (digest != null) { string value = digest.GenerateResponseHeader(this, Proxy.Credentials); if (!string.IsNullOrEmpty(value)) { SetHeader("Proxy-Authorization", value); } } break; } } } if (Credentials != null) { switch (Credentials.Type) { case AuthenticationTypes.Basic: SetHeader("Authorization", "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(Credentials.UserName + ":" + Credentials.Password))); break; case AuthenticationTypes.Unknown: case AuthenticationTypes.Digest: { Digest digest2 = DigestStore.Get(CurrentUri); if (digest2 != null) { string value2 = digest2.GenerateResponseHeader(this, Credentials); if (!string.IsNullOrEmpty(value2)) { SetHeader("Authorization", value2); } } break; } } } List <Cookie> list = (!IsCookiesEnabled) ? null : CookieJar.Get(CurrentUri); if (list == null || list.Count == 0) { list = customCookies; } else if (customCookies != null) { for (int i = 0; i < customCookies.Count; i++) { Cookie customCookie = customCookies[i]; int num2 = list.FindIndex((Cookie c) => c.Name.Equals(customCookie.Name)); if (num2 >= 0) { list[num2] = customCookie; } else { list.Add(customCookie); } } } if (list != null && list.Count > 0) { bool flag = true; string text = string.Empty; bool flag2 = HTTPProtocolFactory.IsSecureProtocol(CurrentUri); SupportedProtocols protocolFromUri = HTTPProtocolFactory.GetProtocolFromUri(CurrentUri); foreach (Cookie item in list) { if ((!item.IsSecure || (item.IsSecure && flag2)) && (!item.IsHttpOnly || (item.IsHttpOnly && protocolFromUri == SupportedProtocols.HTTP))) { if (!flag) { text += "; "; } else { flag = false; } text += item.ToString(); item.LastAccess = DateTime.UtcNow; } } SetHeader("Cookie", text); } if (callback != null) { foreach (KeyValuePair <string, List <string> > header in Headers) { callback(header.Key, header.Value); } } }
private void Connect() { Uri uri = (!base.CurrentRequest.HasProxy) ? base.CurrentRequest.CurrentUri : base.CurrentRequest.Proxy.Address; if (Client == null) { Client = new TcpClient(); } if (!Client.Connected) { Client.ConnectTimeout = base.CurrentRequest.ConnectTimeout; Client.Connect(uri.Host, uri.Port); if (HTTPManager.Logger.Level <= Loglevels.Information) { HTTPManager.Logger.Information("HTTPConnection", "Connected to " + uri.Host + ":" + uri.Port.ToString()); } } else if (HTTPManager.Logger.Level <= Loglevels.Information) { HTTPManager.Logger.Information("HTTPConnection", "Already connected to " + uri.Host + ":" + uri.Port.ToString()); } lock (HTTPManager.Locker) { base.StartTime = DateTime.UtcNow; } if (Stream == null) { bool flag = HTTPProtocolFactory.IsSecureProtocol(base.CurrentRequest.CurrentUri); if (base.HasProxy && (!base.Proxy.IsTransparent || (flag && base.Proxy.NonTransparentForHTTPS))) { Stream = Client.GetStream(); BinaryWriter binaryWriter = new BinaryWriter(Stream); bool flag2; do { flag2 = false; binaryWriter.SendAsASCII($"CONNECT {base.CurrentRequest.CurrentUri.Host}:{base.CurrentRequest.CurrentUri.Port} HTTP/1.1"); binaryWriter.Write(HTTPRequest.EOL); binaryWriter.SendAsASCII("Proxy-Connection: Keep-Alive"); binaryWriter.Write(HTTPRequest.EOL); binaryWriter.SendAsASCII("Connection: Keep-Alive"); binaryWriter.Write(HTTPRequest.EOL); binaryWriter.SendAsASCII($"Host: {base.CurrentRequest.CurrentUri.Host}:{base.CurrentRequest.CurrentUri.Port}"); binaryWriter.Write(HTTPRequest.EOL); if (base.HasProxy && base.Proxy.Credentials != null) { switch (base.Proxy.Credentials.Type) { case AuthenticationTypes.Basic: binaryWriter.Write(string.Format("Proxy-Authorization: {0}", "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(base.Proxy.Credentials.UserName + ":" + base.Proxy.Credentials.Password))).GetASCIIBytes()); binaryWriter.Write(HTTPRequest.EOL); break; case AuthenticationTypes.Unknown: case AuthenticationTypes.Digest: { Digest digest = DigestStore.Get(base.Proxy.Address); if (digest != null) { string text = digest.GenerateResponseHeader(base.CurrentRequest, base.Proxy.Credentials); if (!string.IsNullOrEmpty(text)) { binaryWriter.Write($"Proxy-Authorization: {text}".GetASCIIBytes()); binaryWriter.Write(HTTPRequest.EOL); } } break; } } } binaryWriter.Write(HTTPRequest.EOL); binaryWriter.Flush(); base.CurrentRequest.ProxyResponse = new HTTPResponse(base.CurrentRequest, Stream, isStreamed: false, isFromCache: false); if (!base.CurrentRequest.ProxyResponse.Receive()) { throw new Exception("Connection to the Proxy Server failed!"); } if (HTTPManager.Logger.Level <= Loglevels.Information) { HTTPManager.Logger.Information("HTTPConnection", "Proxy returned - status code: " + base.CurrentRequest.ProxyResponse.StatusCode + " message: " + base.CurrentRequest.ProxyResponse.Message); } int statusCode = base.CurrentRequest.ProxyResponse.StatusCode; if (statusCode == 407) { string text2 = DigestStore.FindBest(base.CurrentRequest.ProxyResponse.GetHeaderValues("proxy-authenticate")); if (!string.IsNullOrEmpty(text2)) { Digest orCreate = DigestStore.GetOrCreate(base.Proxy.Address); orCreate.ParseChallange(text2); if (base.Proxy.Credentials != null && orCreate.IsUriProtected(base.Proxy.Address) && (!base.CurrentRequest.HasHeader("Proxy-Authorization") || orCreate.Stale)) { flag2 = true; } } } else if (!base.CurrentRequest.ProxyResponse.IsSuccess) { throw new Exception($"Proxy returned Status Code: \"{base.CurrentRequest.ProxyResponse.StatusCode}\", Message: \"{base.CurrentRequest.ProxyResponse.Message}\" and Response: {base.CurrentRequest.ProxyResponse.DataAsText}"); } }while (flag2); } if (flag) { if (base.CurrentRequest.UseAlternateSSL) { TlsClientProtocol tlsClientProtocol = new TlsClientProtocol(Client.GetStream(), new SecureRandom()); List <string> list = new List <string>(1); list.Add(base.CurrentRequest.CurrentUri.Host); TlsClientProtocol tlsClientProtocol2 = tlsClientProtocol; Uri currentUri = base.CurrentRequest.CurrentUri; object verifyer; if (base.CurrentRequest.CustomCertificateVerifyer == null) { ICertificateVerifyer certificateVerifyer = new AlwaysValidVerifyer(); verifyer = certificateVerifyer; } else { verifyer = base.CurrentRequest.CustomCertificateVerifyer; } tlsClientProtocol2.Connect(new LegacyTlsClient(currentUri, (ICertificateVerifyer)verifyer, base.CurrentRequest.CustomClientCredentialsProvider, list)); Stream = tlsClientProtocol.Stream; } else { SslStream sslStream = new SslStream(Client.GetStream(), leaveInnerStreamOpen: false, (object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors errors) => base.CurrentRequest.CallCustomCertificationValidator(cert, chain)); if (!sslStream.IsAuthenticated) { sslStream.AuthenticateAsClient(base.CurrentRequest.CurrentUri.Host); } Stream = sslStream; } } else { Stream = Client.GetStream(); } } }