public TCPDataEventArgs(TCPDataRecombine tcpData)
{
TCPData = tcpData;
}
public TCPDataEventArgs()
{
TCPData = null;
}
bool Read()
{
IPPacket ipUp;
IPPacket ip;
TCPPacket tcp;
bool bFinish = false;
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02);//段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02;//同步
IPSender(ip);
int err = 0;
int retry = 0;
while (true)
{
ipUp = IPReader();
if (ipUp != null)
{
err = 0;
TCPPacket tcpUp = (TCPPacket)ipUp.oProtocolContent;
if (tcpUp == null)
{
continue;
}
if (tcpUp.DastinationPort != ourPort)
{
continue;
}
switch (tcpUp.TCPFlags)
{
case 0x12:
if (tcpState == TCPState.SYN) //之前正在处于请求连接状态
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x10;
IPSender(ip);
tcp.TCPFlags = 0x18; //push数据
TCPSeqNum += (uint)TCPTxData.Count;
foreach (byte b in TCPTxData)
{
tcp.Datas.Add(b);
}
IPSender(ip);
TCPData = new TCPDataRecombine(TCPDataType.HTTP);
TCPData.InitSeqNum = tcp.AckSeqNumber;
tcpState = TCPState.TransData;
}
else if (tcpState == TCPState.FIN)
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x10;
IPSender(ip);
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02); //段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02; //同步
IPSender(ip);
tcpState = TCPState.SYN;
}
else if (tcpState == TCPState.TransData)
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x10;
IPSender(ip);
}
else
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x14;
IPSender(ip);
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02); //段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02; //同步
IPSender(ip);
Debug.WriteLine(Com.PortName + "TCP未知命令交互:" + tcpState.ToString() + " " + tcpUp.TCPFlags.ToString("X2"));
}
break;
case 0x10:
case 0x18:
if (tcpState == TCPState.WaitFIN)
{
OnIPProcLog("成功关闭连接!", (int)ATCommandLogType.Rx);
tcpState = TCPState.WaitFIN1;
return(true);
}
else if (tcpState == TCPState.TransData)
{
if (tcpUp.Datas.Count != 0)
{
int rxState = TCPData.bFinish(tcpUp.InitialSeqNumber, tcpUp.Datas, finishper);
if (finishper < 100)
{
switch (TCPData.datatype)
{
case TCPDataType.HTTP:
Http http = (Http)TCPData.oTCPDatas;
OnIPFinishPer(http.per.ToString());
break;
default:
break;
}
}
if (rxState == (int)HttpRxState.Finish) //数据接收完成
{
tcp.TCPFlags = 0x11;
TCPSeqNum++;
tcpState = TCPState.WaitFIN;
IPSender(ip);
bFinish = true;
OnIPProcLog("数据接收完成!", (int)ATCommandLogType.Rx);
}
else if (rxState == (int)HttpRxState.LengthOut)
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02); //段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02; //同步
IPSender(ip);
tcpState = TCPState.SYN;
}
else
{
Debug.WriteLine(Com.PortName + "还需要的数据量为:" + rxState.ToString());
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + (uint)tcpUp.Datas.Count;
tcp.TCPFlags = 0x10;
IPSender(ip);
}
}
}
else
{
// ip = NewIPPacket();
// tcp = (TCPPacket)ip.oProtocolContent;
// tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
// tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
// tcp.TCPFlags = 0x14;
// IPSender(ip);
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02); //段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02; //同步
IPSender(ip);
// Debug.WriteLine(Com.PortName + "TCP未知命令交互:" + tcpState.ToString() + " " + tcpUp.TCPFlags.ToString("X2"));
Debug.WriteLine(Com.PortName + "TCP未知命令交互:" + tcpState.ToString() + " " + tcpUp.TCPFlags.ToString("X2"));
}
break;
case 0x11:
if (tcpState == TCPState.WaitFIN)
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x10;
IPSender(ip);
OnIPProcLog("成功关闭连接!11111111111111111111", (int)ATCommandLogType.Rx);
return(true);
}
else
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x10;
IPSender(ip);
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02); //段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02; //同步
IPSender(ip);
tcpState = TCPState.SYN;
}
break;
case 0x04:
if (tcpState == TCPState.WaitFIN || tcpState == TCPState.WaitFIN1)
{
// ip = NewIPPacket();
// tcp = (TCPPacket)ip.oProtocolContent;
// tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
// tcp.AckSeqNumber = tcpUp.InitialSeqNumber;
// tcp.TCPFlags = 0x10;
// IPSender(ip);
// tcp.TCPFlags = 0x11;
// TCPSeqNum++;
// tcpState = TCPState.WaitFIN;
// IPSender(ip);
OnIPProcLog("彻底关闭连接", (int)ATCommandLogType.Rx);
return(true);
}
else
{
Debug.WriteLine(Com.PortName + "TCP未知命令交互:" + tcpState.ToString() + " " + tcpUp.TCPFlags.ToString("X2"));
// if(tcpState==TCPState.SYN)
// {
// ip = NewIPPacket();
// tcp = (TCPPacket)ip.oProtocolContent;
// tcp.TCPOptions = new List<byte>();
// tcp.TCPOptions.Add(0x02);//段字节数最多为1024：0x4000
// tcp.TCPOptions.Add(0x04);
// tcp.TCPOptions.Add(0x04);
// tcp.TCPOptions.Add(0x00);
// tcp.DataOffset++;
// tcp.TCPFlags = 0x02;//同步
// IPSender(ip);
// tcpState = TCPState.SYN;
// }
}
break;
case 0x14:
if (tcpState == TCPState.WaitFIN || tcpState == TCPState.WaitFIN1)
{
OnIPProcLog("彻底关闭连接", (int)ATCommandLogType.Rx);
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber;
tcp.TCPFlags = 0x10;
IPSender(ip);
return(true);
}
else
{
Debug.WriteLine(Com.PortName + "TCP未知命令交互:" + tcpState.ToString() + " " + tcpUp.TCPFlags.ToString("X2"));
// if (tcpState == TCPState.SYN)
// {
// ip = NewIPPacket();
// tcp = (TCPPacket)ip.oProtocolContent;
// tcp.TCPOptions = new List<byte>();
// tcp.TCPOptions.Add(0x02);//段字节数最多为1024：0x4000
// tcp.TCPOptions.Add(0x04);
// tcp.TCPOptions.Add(0x04);
// tcp.TCPOptions.Add(0x00);
// tcp.DataOffset++;
// tcp.TCPFlags = 0x02;//同步
// IPSender(ip);
// tcpState = TCPState.SYN;
// }
// ip = NewIPPacket();
// tcp = (TCPPacket)ip.oProtocolContent;
// tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
// tcp.AckSeqNumber = tcpUp.InitialSeqNumber;
// tcp.TCPFlags = 0x10;
// IPSender(ip);
// tcpState = TCPState.SYN;
}
break;
case 0x01:
if (tcpState == TCPState.WaitFIN1)
{
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.InitialSeqNumber = tcpUp.AckSeqNumber;
tcp.AckSeqNumber = tcpUp.InitialSeqNumber + 1;
tcp.TCPFlags = 0x10;
IPSender(ip);
OnIPProcLog("成功关闭连接!11111111111111111111", (int)ATCommandLogType.Rx);
return(true);
}
else
{
break;
}
}
}
else
{
err++;
if (err > 30)
{
if (bFinish)
{
return(true);
}
bFinish = false;
retry++;
if (retry > 12)
{
break;
}
OnIPProcLog("TCP超时重试" + (retry + 1).ToString(), (int)ATCommandLogType.TCPTimeOut);
err = 0;
ip = NewIPPacket();
tcp = (TCPPacket)ip.oProtocolContent;
tcp.TCPOptions = new List <byte>();
tcp.TCPOptions.Add(0x02);//段字节数最多为1024：0x4000
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x04);
tcp.TCPOptions.Add(0x00);
tcp.DataOffset++;
tcp.TCPFlags = 0x02;//同步
IPSender(ip);
tcpState = TCPState.SYN;
}
}
}
return(false);
}
