static void OnReceiveLoginRequest(IAsyncResult ar)
{
//接收到客户端的登陆请求
//请求中带有客户端输入的学生ID，本服务端需要和学生信息进行匹配，
//首先学号查找与学号对应的卡号，然后查找卡号是否已经读取到，如果已经读取到，则广播发送登陆信息给客户端
//如果卡号尚未读取到，则客户端可以等待，然后读取到卡号的时候会发送登陆信息
//接收到的数据格式
// [id,data,epc,data] 对应的正则表达式 \[id,(?<id>\w+),epc,(?<epc>\w{0,})\] 必须要求有ID存在
try
{
IPEndPoint ipeSender = new IPEndPoint(IPAddress.Any, 0);
EndPoint epSender = (EndPoint)ipeSender;
Login_ServerSocket.EndReceiveFrom(ar, ref epSender);
string strReceived = Encoding.UTF8.GetString(byteData);
Array.Clear(byteData, 0, byteData.Length);
Debug.WriteLine("OnReceiveLoginRequest => " + strReceived);
string strToBroadcast = string.Empty;
Regex regex = new Regex(@"\[id,(?<id>\w+),epc,(?<epc>\w{0,})\]");
MatchCollection matches = regex.Matches(strReceived);
foreach (Match mc in matches)
{
string epc_match = mc.Groups["epc"].Value;
string id_match = mc.Groups["id"].Value;
Debug.WriteLine(string.Format("Match => epc = {0} student ID = {1}", epc_match, id_match));
//根据接收到的id查找绑定的卡号
Person person = MemoryTable.getPersonByID(id_match);
if (person != null)
{
string epc = person.epc;
//查找是否已经读取到卡号
if (epcList.Contains(epc))
{
string equipmentID = string.Empty;
equipmentPosition ep = MemoryTable.getEquipmentInfoByEpc(epc);
if (ep == null)
{
ep = MemoryTable.getEquipmentInfoNotUsed();
}
if (ep != null)
{
equipmentID = ep.equipmentID;
}
strToBroadcast = string.Format("[id,{0},epc,{1},equipmentID,{2}]", person.id_num, epc, equipmentID);
Broadcast(strToBroadcast);
}
}
}
//Start listening to the message send by the user
Login_ServerSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref epSender,
new AsyncCallback(OnReceiveLoginRequest), epSender);
}
catch (Exception ex)
{
Debug.WriteLine("OnReceiveRFID => " + ex.Message);
}
}
static void OnReceiveRFID(IAsyncResult ar)
{
try
{
IPEndPoint ipeSender = new IPEndPoint(IPAddress.Any, 0);
EndPoint epSender = (EndPoint)ipeSender;
RFID_ServerSocket.EndReceiveFrom(ar, ref epSender);
string strReceived = Encoding.UTF8.GetString(byteData);
Array.Clear(byteData, 0, byteData.Length);
Debug.WriteLine("OnReceiveRFID => " + strReceived);
//先假设接收到的都是卡号
//查找学生信息里面有没有该卡号，如果有的话，广播卡号和学号，可以附带未使用的设备号
//格式为 [epc,id,equipmentID]
string epc = strReceived.Substring(0, strReceived.IndexOf("\0"));
epcList.Add(epc);
string strToBroadcast = string.Empty;
Person person = MemoryTable.getPersonByEpc(epc);
if (person != null)
{
string equipmentID = string.Empty;
equipmentPosition ep = MemoryTable.getEquipmentInfoByEpc(epc);
if (ep == null)
{
ep = MemoryTable.getEquipmentInfoNotUsed();
}
if (ep != null)
{
equipmentID = ep.equipmentID;
}
strToBroadcast = string.Format("[id,{0},epc,{1},equipmentID,{2}]", person.id_num, epc, equipmentID);
//strToBroadcast = string.Format("[id,{0},epc,{1}]", person.id_num, epc);
Broadcast(strToBroadcast);
//Regex regex = new Regex(@"\[(?<epc>\w+),(?<id>\w+)\]");
//MatchCollection matches = regex.Matches(strToBroadcast);
//foreach (Match mc in matches)
//{
// string epc_match = mc.Groups["epc"].Value;
// string id_match = mc.Groups["id"].Value;
// Debug.WriteLine(string.Format("Match => epc = {0} student ID = {1}", epc_match, id_match));
//}
//equipmentPosition ep = MemoryTable.getEquipmentInfoByEpc(epc);
//if (ep == null)//学生尚未绑定座位位置，为其选择一个空的位置
//{
//}
//else
//{
// strToBroadcast = string.Format("[{0},{1}]", epc, person.id_num);
//}
}
//Start listening to the message send by the user
RFID_ServerSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref epSender,
new AsyncCallback(OnReceiveRFID), epSender);
}
catch (Exception ex)
{
Debug.WriteLine("OnReceiveRFID => " + ex.Message);
}
}
