// ----------读取消息----------
private void _OnRead()
{
/*
* Available 是从网络接收的、可供读取的数据字节数
* 这个值是缓冲区中已经接收数据的字节数，不是实际数据的字节数
*/
if (m_Socket.Available > 0)
{
try
{
byte[] buffer = new byte[13];
// 接收数据
m_Socket.Receive(buffer, 13, SocketFlags.Peek);
// 解析消息头
MessageHead head = MessageParse.UnparseHead(buffer);
// 解析失败
if (head == null)
{
// ProtocolOption = 10042 Option unknown, or unsupported
_OnError(new SocketException((int)SocketError.ProtocolOption));
}
// 解析成功
else
{
// 13 = 4(HEAD) + 1(ProtoVersion) + 4(ServerVersion) + 4(Length)
int length = head.Length + 13;
// 数据全部到达
if (length <= m_Socket.Available)
{
buffer = new byte[length];
// 接收数据
m_Socket.Receive(buffer, 0, buffer.Length, SocketFlags.None);
// 解析消息体
MessageBody body = MessageParse.UnparseBody(head.Length, buffer);
if (body != null)
{
MessageData data = new MessageData()
{
head = head, body = body
};
// 上锁，阻塞
lock (_lock) { m_Datas.Enqueue(data); }
}
else
{
// ProtocolOption = 10042 Option unknown, or unsupported
_OnError(new SocketException((int)SocketError.ProtocolOption));
}
}
}
}
catch (SocketException e) { _OnError(e); }
}
}
// ----------递归地获取消息----------
void _OnData()
{
MessageHead head = MessageParse.UnparseHead(buffer.ToArray());
if (head == null)
{
isRead = false;
return;
}
else
{
// 13 = 4(HEAD) + 1(ProtoVersion) + 4(ServerVersion) + 4(Length)
int length = head.Length + 13;
// 数据全部到达
if (length <= buffer.Count)
{
MessageBody body = MessageParse.UnparseBody(head.Length, buffer.ToArray());
if (body != null)
{
// 构造消息
MessageData data = new MessageData()
{
head = head, body = body
};
// 消息入队
datas.Enqueue(data);
// 移除缓冲区数据
buffer.RemoveRange(0, head.Length + 13);
}
else
{
// ProtocolOption = 10042 Option unknown, or unsupported
_OnError(new SocketException((int)SocketError.ProtocolOption));
}
}
}
// 递归调用
_OnData();
}