private void socket_SendCompleted(object sender, SocketEventArgs e)
{
if (!SendCache.ContainsKey(e.Data))
{
return;
}
CommunicationSendEventArgs eventArgs = SendCache[e.Data];
SendCache.Remove(e.Data);
byte[] data = null;
if (e.Data[0] == 5)
{
int offset = SendMark[eventArgs];
if (offset < eventArgs.Data.Length)
{
data = GetSendBlock(eventArgs, offset);
SendCache.Add(data, eventArgs);
SendMark[eventArgs] = offset + data.Length - 21;
Socket.SendAsync(data);
}
else
{
SendMark.Remove(eventArgs);
if (SendCompleted != null)
{
SendCompleted(this, eventArgs);
}
}
}
}
private byte[] GetSendBlock(CommunicationSendEventArgs eventArgs, int offset)
{
byte[] data = null;
if (offset + 32000 < eventArgs.Data.Length)
{
data = new byte[32021];
data[0] = 5;
eventArgs.DataID.ToByteArray().CopyTo(data, 1);
BitConverter.GetBytes(offset).CopyTo(data, 17);
for (int i = 0; i <= 31999; i++)
{
data[21 + i] = eventArgs.Data[offset + i];
}
return(data);
}
else
{
data = new byte[(21 + eventArgs.Data.Length - offset)];
data[0] = 5;
eventArgs.DataID.ToByteArray().CopyTo(data, 1);
for (int i = 0; i < eventArgs.Data.Length - offset; i++)
{
data[21 + i] = eventArgs.Data[offset + i];
}
return(data);
}
}
public void Send(byte[] data, byte[] head)
{
if (_Disposed)
{
throw new InvalidOperationException("已释放资源。");
}
if (!IsConnected)
{
throw new InvalidOperationException("连接已断开。");
}
if (head != null && head.Length > 48000)
{
throw new IndexOutOfRangeException("头信息长度不能大于48000。");
}
if (head != null && head.Length == 0)
{
head = null;
}
CommunicationSendEventArgs eventArgs = new CommunicationSendEventArgs(this, data, head);
byte[] sendData = null;
if (head == null)
{
sendData = new byte[21];
}
else
{
sendData = new byte[(21 + head.Length)];
}
sendData[0] = 3;
eventArgs.DataID.ToByteArray().CopyTo(sendData, 1);
BitConverter.GetBytes(data.Length).CopyTo(sendData, 17);
if (head != null)
{
head.CopyTo(sendData, 21);
}
SendWait.Add(eventArgs.DataID, eventArgs);
Socket.SendAsync(sendData);
}
private void socket_ReceiveCompleted(object sender, SocketEventArgs e)
{
byte[] data = null;
Guid id = new Guid();
CommunicationReceiveEventArgs receiveEventArgs = null;
switch (e.Data[0])
{
case 3:
if (e.DataLength < 21)
{
return;
}
id = new Guid(e.Data.Skip(1).Take(16).ToArray());
int dataLength = BitConverter.ToInt32(e.Data.Skip(17).Take(4).ToArray(), 0);
byte[] head = null;
if (e.DataLength > 21)
{
head = e.Data.Skip(21).ToArray();
}
receiveEventArgs = new CommunicationReceiveEventArgs(this, id, dataLength, head);
PreviewReceive?.Invoke(this, receiveEventArgs);
data = new byte[18];
data[0] = 4;
int i = 1;
do
{
data[i] = e.Data[i];
i++;
}while (i <= 16);
if (!receiveEventArgs.Handled)
{
receiveEventArgs.Data = new byte[dataLength];
ReceiveCache.Add(id, receiveEventArgs);
data[17] = 1;
}
else
{
data[17] = 0;
}
Socket.SendAsync(data);
break;
case 4:
if (e.DataLength != 18)
{
return;
}
id = new Guid(e.Data.Skip(1).Take(16).ToArray());
if (!SendWait.ContainsKey(id))
{
return;
}
CommunicationSendEventArgs sendEventArgs = SendWait[id];
SendWait.Remove(id);
sendEventArgs.Success = e.Data[17] == 1;
if (!sendEventArgs.Success)
{
if (SendCompleted != null)
{
SendCompleted(this, sendEventArgs);
}
return;
}
data = GetSendBlock(sendEventArgs, 0);
SendCache.Add(data, sendEventArgs);
SendMark.Add(sendEventArgs, data.Length - 21);
Socket.SendAsync(data);
break;
case 5:
if (e.DataLength < 22)
{
return;
}
id = new Guid(e.Data.Skip(1).Take(16).ToArray());
if (!ReceiveCache.ContainsKey(id))
{
return;
}
receiveEventArgs = ReceiveCache[id];
int offset = BitConverter.ToInt32(e.Data.Skip(17).Take(4).ToArray(), 0);
for (int j = 0; j < e.DataLength - 21; j++)
{
receiveEventArgs.Data[offset + j] = e.Data[21 + j];
}
if (offset + e.DataLength - 21 == receiveEventArgs.DataLength)
{
ReceiveCache.Remove(id);
ReceiveCompleted?.Invoke(this, receiveEventArgs);
}
break;
}
}