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所以我試圖做一個聊天室。我使用TCP套接字發送所有信息。但是當我發送一個字節數組時,接收套接字緩衝區的最後一個字節缺失。它是0,因爲字節數組是255大的,所以剩下的字節是0.我已經通過調試模式檢查過,在發送數據包的時候,數組是正確的。但是,在插座完成接收時,它丟失了最後一個字節的中斷點。爲什麼會發生這種情況?我看到另一個線程說你必須停止線程直到套接字完成接收,但是我使用的是AsyncCallBack,據我所知,套接字已經完成接收。通過TCP套接字鬆動一個字節
此外,每個數據包中的第一個字節應該是字符串大小(以說明多餘的空字節)。
PacketClass:
public class Packet
{
public byte[] Buffer;
public Packet(string message)
{
Buffer = new byte[255];
byte[] messageArray = Encoding.ASCII.GetBytes(message);
Buffer[0] = (byte)messageArray.GetLength(0);
for (int i = 0; i < messageArray.GetLength(0); i++)
{
Buffer[i+1] = messageArray[i];
}
}
public Packet(byte[] buffer)
{
Buffer = buffer;
}
public string GetMessage()
{
List<byte> messageBuffer = new List<byte>();
for (int i = 1; i <= Buffer[0]; i++)
{
messageBuffer.Add(Buffer[i]);
}
return Encoding.ASCII.GetString(messageBuffer.ToArray());
}
}
SocketClass:
class Client
{
public static List<Client> connectedClients = new List<Client>();
public Socket Sock;
public byte[] Buffer = new byte[255];
public Client(Socket pSock)
{
Sock = pSock;
Sock.BeginReceive(Buffer, 0, 255, SocketFlags.None, new AsyncCallback(RecieveCallBack), null);
}
public void Send(byte[] pBuffer)
{
Sock.BeginSend(pBuffer, 0, pBuffer.GetLength(0), SocketFlags.None, new AsyncCallback(SendCallBack), null);
}
public void SendCallBack(IAsyncResult AR)
{
Console.WriteLine("Sent");
Sock.EndSend(AR);
}
public void RecieveCallBack(IAsyncResult AR)
{
Sock.EndReceive(AR);
Packet recPacket = new Packet(Buffer);
Console.WriteLine(recPacket.GetMessage());
Sock.BeginReceive(Buffer, 0, 255, SocketFlags.None, new AsyncCallback(RecieveCallBack), null);
}
}
主要服務器程序 `類客戶端 { 公共靜態列表connectedClients =新名單(); public Socket Sock; public byte [] Buffer = new byte [255];
public Client(Socket pSock)
{
Sock = pSock;
Sock.BeginReceive(Buffer, 0, 255, SocketFlags.None, new AsyncCallback(RecieveCallBack), null);
}
public void Send(byte[] pBuffer)
{
Sock.BeginSend(pBuffer, 0, pBuffer.Length, SocketFlags.None, new AsyncCallback(SendCallBack), null);
}
public void SendCallBack(IAsyncResult AR)
{
Console.WriteLine("Sent");
Sock.EndSend(AR);
}
public void RecieveCallBack(IAsyncResult AR)
{
Sock.EndReceive(AR);
Packet recPacket = new Packet(Buffer);
Console.WriteLine(recPacket.GetMessage());
Sock.BeginReceive(Buffer, 0, 255, SocketFlags.None, new AsyncCallback(RecieveCallBack), null);
}
}`
我假設您知道,如果傳入的消息大於254個字符,它會因陣列不夠大而崩潰? – 2015-02-11 00:47:12
我打算將字符串限制爲固定大小。 – Spader 2015-02-11 00:55:17
你使用什麼協議? TCP?你能告訴你如何實例化'Sock'變量嗎? – 2015-02-11 01:25:39