/// <summary>
/// 得到登陸字節
/// </summary>
/// <param name="SqlDatatable"></param>
/// <returns></returns>
public byte[] GetLoginBytes(DataBranch dr)
{
byte[] usrname = System.Text.Encoding.UTF8.GetBytes(serverInfo.LoginName);
byte[] password = System.Text.Encoding.UTF8.GetBytes(serverInfo.LoginPass);
//返回字節數
byte[] ret = new byte[13 + usrname.Length + password.Length];
Buffer.BlockCopy(dr.GetByte(ReceCommandType.LoginByte), 0, ret, 0, 9);
ret[9] = (byte)usrname.Length;
Buffer.BlockCopy(usrname, 0, ret, 10, ret[9]);
ret[10 + ret[9]] = (byte)password.Length;
Buffer.BlockCopy(password, 0, ret, 11 + ret[9], ret[10 + ret[9]]);
dr.AddSumCode(ret, ret.Length);
return(ret);
}
/// <summary>
/// 循环发送指令，确保服务器、客户端接收到正确信息(检查校验码、重发指令)
/// </summary>
private void SendLoop(Socket client, byte[] sendBytes, DataBranch dr)
{
//设置读取字节数为零
ReadCount = 0;
//循环检测校验码,校验码不通过 或 接到重发指令 （重发指令）
//ReadCount=0 确保能运行一次
while (!dr.CheckSumCode(state.buffer, ReadCount) ||
dr.ComparisonByte(dr.GetByte(ReceCommandType.SendAgain), state.buffer))
{
//发送指令
client.Send(sendBytes);
//接收指令
ReadCount = client.Receive(state.buffer);
}
}
//返回按钮发送字节数组
public byte[] GetButtonClickSendBytes(DataBranch br)
{
//获得按钮属性Tag 字节数组
byte[] sb = System.Text.Encoding.UTF8.GetBytes(ButtonTag.ToString());
//返回字节数组
byte[] retSendBytes = new byte[sb.Length + 9];
//获得指令头字节数组
byte[] commBytes = br.GetByte(ReceCommandType.ButontClick);
//复制命令头字节
Buffer.BlockCopy(commBytes, 0, retSendBytes, 0, commBytes.Length);
//复制按钮属性Tag
Buffer.BlockCopy(sb, 0, retSendBytes, commBytes.Length, sb.Length);
//添加校验码
br.AddSumCode(retSendBytes, retSendBytes.Length);
//返回数组
return(retSendBytes);
}
/// <summary>
/// 开启客户端连接
/// </summary>
public bool StartConnect()
{
bool exist = false;
try
{
//设置IP 端口
IPAddress ipAddress = IPAddress.Parse(serverInfo.IpAddress);
IPEndPoint remoteEP = new IPEndPoint(ipAddress, serverInfo.IpPort);// 11880
// 建立 TCP/IP Socket
client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
DataBranch dr = new DataBranch();
//开启连接到远程计算机
client.Connect(remoteEP);
//获得客户端连接
state.workSocket = client;
//发送登陆字节到远程
SendLoop(client, GetLoginBytes(dr), dr);
//发送单击按钮事件
SendLoop(client, GetButtonClickSendBytes(dr), dr);
// if (ShowBox != null)
// ShowBox(state.buffer[2] == 1 ? true : false);
exist = state.buffer[2] == 1 ? true : false;
// EXIST = state.buffer[2] == 1 ? true : false;
//关闭连接
SendLoop(client, dr.GetByte(ReceCommandType.ExitServer), dr);
client.Shutdown(SocketShutdown.Both);
client.Close();
return(exist);
}
catch
{
return(exist);
}
}