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1 | using System; | |
2 | using System.Collections.Generic; | |
3 | using System.IO; | |
4 | using System.IO.Compression; | |
5 | using System.Linq; | |
6 | using System.Text; | |
7 | - | using System.Web.Script.Serialization; // Needs Reference to 'System.Web.Extensions.dll' |
7 | + | using System.Web.Script.Serialization; // Needs reference to 'System.Web.Extensions.dll' |
8 | - | using ZMQ; // Needs Reference to 'clrzmq.dll' and adding 'libzmq.dll' to project |
8 | + | using ZMQ; // Needs reference to 'clrzmq.dll' and adding 'libzmq.dll' to project |
9 | // 'clrzmq' can be found at: https://github.com/zeromq/clrzmq/downloads | |
10 | ||
11 | namespace EMDR_Client | |
12 | { | |
13 | public class Program | |
14 | { | |
15 | private static void Main() | |
16 | { | |
17 | using (var context = new Context()) | |
18 | { | |
19 | using (var subscriber = context.Socket(SocketType.SUB)) | |
20 | { | |
21 | //Connect to the first publicly available relay. | |
22 | subscriber.Connect("tcp://relay-linode-atl-1.eve-emdr.com:8050"); | |
23 | ||
24 | // Disable filtering. | |
25 | subscriber.SetSockOpt(SocketOpt.SUBSCRIBE, Encoding.UTF8.GetBytes("")); | |
26 | ||
27 | // Alternatively 'Subscribe' can be used | |
28 | //subscriber.Subscribe("", Encoding.UTF8); | |
29 | ||
30 | while (true) | |
31 | { | |
32 | try | |
33 | { | |
34 | // Receive compressed raw market data. | |
35 | var receivedData = subscriber.Recv(); | |
36 | ||
37 | // The following code lines remove the need of 'zlib' usage; | |
38 | // 'zlib' actually uses the same algorith as 'DeflateStream'. | |
39 | // To make the data compatible for 'DeflateStream', we only have to remove | |
40 | // the four last bytes which are the adler32 checksum and | |
41 | // the two first bytes which are the 'zlib' header. | |
42 | byte[] decompressed; | |
43 | byte[] choppedRawData = new byte[(receivedData.Length - 4)]; | |
44 | Array.Copy(receivedData, choppedRawData, choppedRawData.Length); | |
45 | choppedRawData = choppedRawData.Skip(2).ToArray(); | |
46 | ||
47 | // Decompress the raw market data. | |
48 | using (MemoryStream inStream = new MemoryStream(choppedRawData)) | |
49 | using (MemoryStream outStream = new MemoryStream()) | |
50 | { | |
51 | DeflateStream outZStream = new DeflateStream(inStream, CompressionMode.Decompress); | |
52 | outZStream.CopyTo(outStream); | |
53 | decompressed = outStream.ToArray(); | |
54 | } | |
55 | ||
56 | // Transform data into JSON strings. | |
57 | string marketJson = Encoding.UTF8.GetString(decompressed); | |
58 | ||
59 | // Un-serialize the JSON data to a dictionary. | |
60 | var serializer = new JavaScriptSerializer(); | |
61 | var dictionary = serializer.Deserialize<Dictionary<string, object>>(marketJson); | |
62 | ||
63 | // Dump the market data to console or, you know, do more fun things here. | |
64 | foreach (KeyValuePair<string, object> pair in dictionary) | |
65 | { | |
66 | Console.WriteLine("{0}: {1}", pair.Key, pair.Value); | |
67 | } | |
68 | Console.WriteLine(); | |
69 | } | |
70 | catch (ZMQ.Exception ex) | |
71 | { | |
72 | Console.WriteLine("ZMQ Exception occurred : {0}", ex.Message); | |
73 | } | |
74 | } | |
75 | } | |
76 | } | |
77 | } | |
78 | } | |
79 | } |