System.Net.HttpWebRequest.HttpWebRequest.GetHeaders C# (CSharp) Method

		string GetHeaders ()
		{
			bool continue100 = false;
			if (sendChunked) {
				continue100 = true;
				webHeaders.RemoveAndAdd ("Transfer-Encoding", "chunked");
				webHeaders.RemoveInternal ("Content-Length");
			} else if (contentLength != -1) {
				if (ntlm_auth_state != NtlmAuthState.Challenge) {
					if (contentLength > 0)
						continue100 = true;

					webHeaders.SetInternal ("Content-Length", contentLength.ToString ());
				} else {
					webHeaders.SetInternal ("Content-Length", "0");
				}
				webHeaders.RemoveInternal ("Transfer-Encoding");
			} else {
				webHeaders.RemoveInternal ("Content-Length");
			}

			if (actualVersion == HttpVersion.Version11 && continue100 &&
			    servicePoint.SendContinue) { // RFC2616 8.2.3
				webHeaders.RemoveAndAdd ("Expect" , "100-continue");
				expectContinue = true;
			} else {
				webHeaders.RemoveInternal ("Expect");
				expectContinue = false;
			}

			bool proxy_query = ProxyQuery;
			string connectionHeader = (proxy_query) ? "Proxy-Connection" : "Connection";
			webHeaders.RemoveInternal ((!proxy_query) ? "Proxy-Connection" : "Connection");
			Version proto_version = servicePoint.ProtocolVersion;
			bool spoint10 = (proto_version == null || proto_version == HttpVersion.Version10);

			if (keepAlive && (version == HttpVersion.Version10 || spoint10)) {
				webHeaders.RemoveAndAdd (connectionHeader, "keep-alive");
			} else if (!keepAlive && version == HttpVersion.Version11) {
				webHeaders.RemoveAndAdd (connectionHeader, "close");
			}

			webHeaders.SetInternal ("Host", Host);
			if (cookieContainer != null) {
				string cookieHeader = cookieContainer.GetCookieHeader (actualUri);
				if (cookieHeader != "")
					webHeaders.SetInternal ("Cookie", cookieHeader);
			}

			string accept_encoding = null;
			if ((auto_decomp & DecompressionMethods.GZip) != 0)
				accept_encoding = "gzip";
			if ((auto_decomp & DecompressionMethods.Deflate) != 0)
				accept_encoding = accept_encoding != null ? "gzip, deflate" : "deflate";
			if (accept_encoding != null)
				webHeaders.RemoveAndAdd ("Accept-Encoding", accept_encoding);

			if (!usedPreAuth && preAuthenticate)
				DoPreAuthenticate ();

			return webHeaders.ToString ();
		}