private bool tryGetPackage(byte[] buff, int len, int offset, LinkPackage package)
{
bool flag = false;
int t;
while (offset < len && (!flag))
{
PackageParseResult res = package.ReadFromBuffer(buff, len, offset, out t);
switch (res)
{
case PackageParseResult.NoSTX:
offset++;
break;
case PackageParseResult.NoEnoughData:
flag = true;
break;
case PackageParseResult.BadCheckSum:
Debug.WriteLine("[port scanner]bad checksum");
offset++;
break;
case PackageParseResult.Yes:
return(true);
}
}
return(false);
}
public override bool SendPackage(LinkPackage package, bool wait)
{
if (isSending)
{
if (wait)
{
while (isSending)
{
;
}
}
else
{
return(false);
}
}
isSending = true;
try
{
port.Write(package.Buffer, 0, package.PackageSize);
dataSent += package.PackageSize;
OnSendPackageEvent(this, new LinkEventArgs(package));
}
catch
{
}
isSending = false;
return(true);
}
public virtual LinkPackage Clone()
{
LinkPackage p = new LinkPackage(buffer.Length);
buffer.CopyTo(p.buffer, 0);
p.dataSize = dataSize;
p.reverseBytes = this.reverseBytes;
p.timeStamp = timeStamp;
return(p);
}
/// <summary>
/// 直接发送一个数据包
/// </summary>
/// <param name="package">要发送的数据包</param>
/// <param name="wait">是否允许等待发送</param>
/// <returns></returns>
public virtual bool SendPackage(LinkPackage package, bool wait)
{
if (isSending)
{
if (wait)
{
while (isSending)
{
;
}
}
else
{
return(false);
}
}
return(true);
}
public CommLink(LinkProtocol p)
{
protocol = p;
dataReceived = 0;
dataSent = 0;
TxRate = 0;
RxRate = 0;
state = LinkState.Disconnected;
isSending = false;
receivedPackageQueue = new ConcurrentQueue <LinkPackage>();
sendPackageQueue = new Queue <LinkPackage>();
switch (p)
{
case LinkProtocol.SBLink:
receivePackage = new SBLinkPackage();
break;
default:
receivePackage = new LinkPackage(2048);
break;
}
}
public LinkEventArgs(LinkPackage p)
{
Package = new List <LinkPackage>();
Package.Add(p);
}
/// <summary>
/// 直接发送一个数据包
/// </summary>
/// <param name="package">要发送的数据包</param>
/// <returns></returns>
public virtual bool SendPackage(LinkPackage package)
{
return(SendPackage(package, true));
}