/// <summary>发送数据包到目的地址</summary>
/// <param name="pk"></param>
/// <param name="remote"></param>
/// <param name="wait"></param>
/// <returns></returns>
internal async Task <Packet> SendAsync(Packet pk, IPEndPoint remote, Boolean wait)
{
if (pk.Count > 0)
{
if (remote != null && remote.Address == IPAddress.Broadcast && !Client.EnableBroadcast)
{
Client.EnableBroadcast = true;
// 广播匹配任意响应
remote = null;
}
}
if (Packet == null)
{
Packet = new PacketProvider();
}
var task = !wait ? null : Packet.Add(pk, remote, Timeout);
// 这里先发送，基类的SendAsync注定发给Remote而不是remote
if (!SendByQueue(pk, remote))
{
return(null);
}
if (!wait)
{
return(null);
}
return(await task.ConfigureAwait(false));
}
/// <summary>异步发送数据并等待响应</summary>
/// <param name="pk"></param>
/// <returns></returns>
public virtual async Task <Packet> SendAsync(Packet pk)
{
if (!Open())
{
return(null);
}
if (Packet == null)
{
Packet = new PacketProvider();
}
var task = Packet.Add(pk, null, Timeout);
if (pk != null)
{
WriteLog("SendAsync:{0}", pk.ToHex());
// 发送数据
Serial.Write(pk.Data, pk.Offset, pk.Count);
}
return(await task);
}