https://github.com/joeandaverde/socket.io-csharp-client
http://websocket4net.codeplex.com/
http://www.codeproject.com/Articles/463947/Working-with-Sockets-in-Csharp
https://supersocket.codeplex.com/
https://github.com/rdavisau/sockets-for-pcl
http://www.cs.columbia.edu/~lok/csharp/refdocs/System.Net.Sockets/types/Socket.html
https://github.com/xljiulang/NetworkSocket
https://github.com/kerryjiang/SuperSocket
https://github.com/kerryjiang/SuperWebSocket
https://github.com/kerryjiang/SuperSocket.ClientEngine
https://github.com/NetEase/UnitySocketIO
https://github.com/ihaoqihao/FastSocket.Net
https://github.com/ihaoqihao/Redis.Driver.Net
https://github.com/ihaoqihao/Zookeeper.Net
https://github.com/ihaoqihao/Thrift.Net
https://github.com/ihaoqihao/Riak.Driver.Net
https://github.com/kaistseo/UnitySocketIO-WebSocketSharp
https://github.com/vtortola/WebSocketListener
https://github.com/Dem0n13/AsyncSocketServers
https://github.com/paulbatum/WebSocket-Samples
https://github.com/mxinshangshang/CSharp_MyChat
https://github.com/hanyue1006/ChatRoom
https://github.com/FrankFan/MyChatRoom
https://github.com/SaintCat/SocketChat
https://github.com/nswbmw/N-chat
https://github.com/xskogure/SpeechRecognitionWebSocket
http://www.c-sharpcorner.com/UploadFile/bfarley/SocketChatBF11182005013225AM/SocketChatBF.aspx
http://www.codeproject.com/Articles/12893/TCP-IP-Chat-Application-Using-C