1 using System.Web.Http.Filters;
2 using System;
3 using System.Net.Http.Headers;
4 using System.Text;
5 using System.Collections.Generic;
6 using System.Web.Http;
7 using System.Web.Http.Controllers;
8 using System.Linq.Expressions;
9 using System.Linq;
10 using System.Reflection;
11 using System.Collections;
12 using System.Threading;
13 using System.Net.Http.Formatting;
14 using System.Net;
15 using System.Threading.Tasks;
16 using System.Runtime.Caching;
17 using System.IO;
18 using Ionic.Zip;
19 using System.Net.Http;
20
21
22 namespace Compress
23 {
24 public class DeflateCompressionAttribute : System.Web.Http.Filters.ActionFilterAttribute
25 {
26 public override void OnActionExecuted(HttpActionExecutedContext actContext)
27 {
28 var content = actContext.Response.Content;
29 var bytes = content == null ? null : content.ReadAsByteArrayAsync().Result;
30 var zlibbedContent = bytes == null ? new byte[0] :
31 CompressionHelper.DeflateByte(bytes);
32 actContext.Response.Content = new ByteArrayContent(zlibbedContent);
33 actContext.Response.Content.Headers.Remove("Content-Type");
34 actContext.Response.Content.Headers.Add("Content-encoding", "gzip");
35 actContext.Response.Content.Headers.Add("Content-Type", "application/json");
36 base.OnActionExecuted(actContext);
37 }
38 }
39
40 public class CompressionHelper
41 {
42 public static byte[] DeflateByte(byte[] str)
43 {
44 if (str == null)
45 {
46 return null;
47 }
48
49 using (var output = new MemoryStream())
50 {
51 using (
52 var compressor = new Ionic.Zlib.GZipStream(
53 output, Ionic.Zlib.CompressionMode.Compress,
54 Ionic.Zlib.CompressionLevel.BestSpeed))
55 {
56 compressor.Write(str, 0, str.Length);
57 }
58
59 return output.ToArray();
60 }
61 }
62 }
63
64 // [DeflateCompressionAttribute]
65 //public ActionResult Index()
66 //{
67 // return View();
68 //}
69
70
71 }
