用于发送字节数组和字符串的流(用于网络)
本文关键字:用于 网络 字符串 字节 字节数 数组 | 更新日期: 2023-09-27 17:50:17
我正在寻找一个包含:-发送/接收字节数组的方法-一个发送/接收字符串
的方法我发现的唯一类是NetworkStream。但是NetworkStream-Class的缺点是,如果我想要发送一个字符串,我必须在将这个字符串转换为字节数组并发送这个字节数组之前,因为没有直接发送字符串的方法。另一方面,像Streamwriter这样的类有发送/接收字符串的方法,但没有发送/接收字节数组的方法。
如果我尝试像这样组合这两个streamclass:
TcpClient clientConnection = new TcpClient();
NetworkStream nws = clientConnection.GetStream();
StreamWriter sw = new StreamWriter(nws);
sw.writeLine("ABC");
sw.Flush();
nws.Write(byteArray, 0, lengthToSend);
我得到了很多奇怪的错误(比如byteArray将不会完全接收到另一边),因为我在这里以两种不同的方式使用同一个流。
所以,我必须使用NetworkStream-Class为我的计划或存在一个更好的方法?
我也有同样的问题,关键是对方不知道你发送的是字节数组还是字符串,所以我所做的是为每个消息放一个头,特别是在处理严重的服务器/客户端应用程序时,因为你将有多个数据(用户信息,请求信息,回复信息…等)
我正在使用流写入器发送和流读取器接收,但我也使用线程只要客户端连接,连接就保持打开状态,所以我声明它们一次
这里是我的代码的完整示例
public class Client
{
private StreamWriter swSender;
private StreamReader srReceiver;
private TcpClient tcpServer;
private Thread thrMessaging;
private string UserName = "UK";
private byte Tries = 0;
private bool Connected = false;
public void Connect()
{
if (!Connected)
{
IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
string User = localIPs[0].ToString();
string ServIP = "127.0.0.1";//change this to your server ip
InitializeConnection(ServIP, User);
}
else
{
CloseConnection("Disconnected at user's request.");
}
}
private void InitializeConnection(string ServIp, string User)
{
IPAddress ipAddr = IPAddress.Parse(ServIp);
tcpServer = new TcpClient();
try
{
tcpServer.Connect(ipAddr, 1986);//change that 1986 to your server port
}
catch
{
if (Connected) CloseConnection("");
MessageBox.Show("Connecteing to " + ServIp + "'r'nServer is Down ... Try nomber " + Tries); return;
}
Connected = true;
UserName = User;
swSender = new StreamWriter(tcpServer.GetStream());
swSender.WriteLine(User);
swSender.Flush();
thrMessaging = new Thread(new ThreadStart(ReceiveMessages));
thrMessaging.Start();
}
private void ReceiveMessages()
{
srReceiver = new StreamReader(tcpServer.GetStream());
string ConResponse = srReceiver.ReadLine();
if (ConResponse[0] == '1')
{
}
else
{
string Reason = "Not Connected: ";
Reason += ConResponse.Substring(2, ConResponse.Length - 2);
return;
}
while (Connected)
{
try
{
string NewMsg = srReceiver.ReadLine();
if (NewMsg != null && NewMsg != "")
PacketHandler.HandlePacket(NewMsg, this);
}
catch { }
}
}
public void CloseConnection(string Reason)
{
try
{
Connected = false;
swSender.Close();
srReceiver.Close();
tcpServer.Close();
}
catch { }
}
public void SendMessage(string Msg)
{
if (Msg.Length >= 1)
{
try
{
Tries++;
swSender.WriteLine(Msg);
swSender.Flush();
Tries = 0;
}
catch
{
if (Tries < 5)
{
try
{
CloseConnection("No connection made");
Connect();
}
catch { }
SendMessage(Msg);
}
else { MessageBox.Show("Connecting to server faild for 5 tries"); Tries = 0; }
}
}
}
,然后在包处理程序,我做我的处理,以检查什么样的数据客户端收到
像这样的
public static void HandlePacket(string MsgRec, Client Client)
{
string[] Info = MsgRec.Split('|');
string Type = Info[0];
if (Type == "")
{
return;
}
string subtype = Info[1];
int TLen = Type.Length + subtype.Length + 2;
string Data = MsgRec.Remove(0, TLen);//this is the main data the server sent
ushort PacketType = ushort.Parse(Type);
ushort SubType = ushort.Parse(subtype);
switch ((Structs.PacketType)PacketType)
{
case Structs.PacketType.Login:
{
//do your stuff here
break
}
case Structs.PacketType.Image:
{
//convert the Data back to byte array then get the image out from it
break
}
case Structs.PacketType.ByteArray:
{
//convert the Data back to byte array
break
}
}
}
我知道这有点乱,不是完美的方法,但它适合我记住,在另一边,当发送一些东西时你需要添加数据包类型和子类型,或者如果你做一些简单的
,只需添加任何带有拆分器的报头最后:我认为使用Sockets和数据包会更容易,如果你发送小数据包长度