/********************************************************************************
 *	文件名：Socket.cs
 *	全路径：	\NetWork\SocketAPI\Socket.cs
 *	创建人：	王华
 *	创建时间：2013-11-29
 *
 *	功能说明： Socket类
 *	       
 *	修改记录：
*********************************************************************************/

#if UNITY_WP8
using UnityPortSocket;
#else
using System.Net.Sockets;
#endif
using System.Net;
using SPacket.Socket_API;

namespace SPacket.SocketInstance
{
    public class SocketInstance
    {
        private string m_host;
        private int m_port;

        private Socket m_SocketID;

        public bool IsValid
        {
            get { return m_SocketID != null; }
        }

        public bool IsConnected
        {
            get { return m_SocketID != null && m_SocketID.Connected; }
        }

        public uint Send(byte[] buf, int nLen, SocketFlags flags = SocketFlags.None)
        {
            return SocketAPI.Send(m_SocketID, buf, (uint) nLen, flags);
        }

        public uint receive(byte[] buf, int nLen, uint flags = 0)
        {
            return SocketAPI.Recv(m_SocketID, buf, (uint) nLen, flags);
        }

        public void close()
        {
            if (IsValid)
            {
                SocketAPI.Close(m_SocketID);
                m_SocketID = null;
            }
        }

        public EndPoint GetLocalEndPoint()
        {
            return m_SocketID == null ? null : m_SocketID.LocalEndPoint;
        }

        public uint available()
        {
            return SocketAPI.available(m_SocketID);
        }

        public string connect(string IP, int port)
        {
            m_host = IP;
            m_port = port;
            var results = "";
            m_SocketID = SocketAPI.Connect(m_host, m_port, ref results);
            return results;
        }

        public bool IsCanSend()
        {
            if (m_SocketID != null)
                if (m_SocketID.Poll(0, SelectMode.SelectWrite))
                    return true;
            return false;
        }

        public bool IsCanReceive()
        {
            if (m_SocketID != null)
                if (m_SocketID.Poll(0, SelectMode.SelectRead))
                    return true;
            return false;
        }
    }
}