MailKit.Net.Imap.ImapClient.Compress C# (CSharp) Метод

		public void Compress (CancellationToken cancellationToken = default (CancellationToken))
		{
			CheckDisposed ();
			CheckConnected ();

			if ((engine.Capabilities & ImapCapabilities.Compress) == 0)
				throw new NotSupportedException ("The IMAP server does not support the COMPRESS extension.");

			if (engine.State >= ImapEngineState.Selected)
				throw new InvalidOperationException ("Compression must be enabled before selecting a folder.");

			int capabilitiesVersion = engine.CapabilitiesVersion;
			var ic = engine.QueueCommand (cancellationToken, null, "COMPRESS DEFLATE\r\n");

			engine.Wait (ic);

			ProcessResponseCodes (ic);

			if (ic.Response != ImapCommandResponse.Ok) {
				for (int i = 0; i < ic.RespCodes.Count; i++) {
					if (ic.RespCodes[i].Type == ImapResponseCodeType.CompressionActive)
						return;
				}

				throw ImapCommandException.Create ("COMPRESS", ic);
			}

			engine.Stream.Stream = new CompressedStream (engine.Stream.Stream);

			// Query the CAPABILITIES again if the server did not include an
			// untagged CAPABILITIES response to the COMPRESS command.
			if (engine.CapabilitiesVersion == capabilitiesVersion)
				engine.QueryCapabilities (cancellationToken);
		}