int messageType = 1; //默认会显示按钮
public MessageShow(MessageDone m)
{
InitializeComponent();
mm = m;
if (mm.Status == 1 || mm.Status == -1)
{
button_ok.Visibility = Visibility.Hidden;
button_cancel.Visibility = Visibility.Hidden;
showlabel.Visibility = Visibility.Visible;
this.button_ok.Visibility = Visibility.Collapsed;
if (mm.Status == -1)
{
showlabel.Content = "已拒绝";
}
if (mm.Status == 1)
{
showlabel.Content = "已同意";
}
}
else if (mm.Status == 2)
{
button_ok.Visibility = Visibility.Hidden;
button_cancel.Visibility = Visibility.Hidden;
button_check.Visibility = Visibility.Collapsed;
showlabel.Visibility = Visibility.Visible;
showlabel.Content = "已阅";
}
}
private async Task <MessageDone> DelayedAnswer(MessageDone done, int afterMs)
{
await Task.Delay(afterMs);
return(done);
}
/// <summary>
/// 核心: 解析报文
/// </summary>
/// <param name="rawPacket"></param>
private void handlePacket(RawCapture rawPacket)
{
try {
// 构建通用数据包
Packet generalPacket = Packet.ParsePacket(rawPacket.LinkLayerType, rawPacket.Data);
// 只要以太网包
if (rawPacket.LinkLayerType == LinkLayers.Ethernet)
{
// 封装以太网包
EthernetPacket e = EthernetPacket.GetEncapsulated(generalPacket);
// 只要IPV4
if (e.Type == EthernetPacketType.IpV4)
{
IPv4Packet ipv4 = (IPv4Packet)IpPacket.GetEncapsulated(generalPacket);
// 只要TCP包
if (ipv4.NextHeader == IPProtocolType.TCP)
{
// 将通用数据包封装为TCP包
TcpPacket tcp = TcpPacket.GetEncapsulated(generalPacket);
byte[] tmp = tcp.PayloadData;// 数据
if (tmp != null && tmp.Length > 4)
{
// 处理粘包
int i = 0;
do
{
int len = -1;
if (i + 4 > tmp.Length)
{
//len = 1;
break;
}
else if (tmp[i] == 0xC1)
{
len = tmp[i + 1];
// C1 0D包长度必须大于13
if (tmp[i + 2] == 0x0D && len >= 13)
{
// 0D包第3字节后有10字节0x00 直接跳过
// 这10字节应该是发送者名字, 服务器消息则没有
byte[] msg = new byte[len - 13];
Buffer.BlockCopy(tmp, i + 13, msg, 0, msg.Length);
string text = Encoding.Default.GetString(msg).Split('\0')[0];
// 处理获取到的服务器消息
MessageDone?.Invoke(this, text);
}
}
else if (tmp[i] == 0xC2 || tmp[i] == 0xC4)
{
// TODO: 这里有个半包异常 懒得处理了
// C2和C4 第2-3字节规定了长度
len = tmp[i + 1] << 8 | tmp[i + 2];
}
else if (tmp[i] == 0xC3)
{
// C1和C3 第2字节规定了长度
len = tmp[i + 1];
}
else
{
len = 1;
}
// 防止半包或网络不稳收到C100 造成死循环
if (len == 0)
{
len = 1;
}
i += len;// 跳过len字节
} while (i < tmp.Length);
}
}
}
}
} catch (Exception e) {
}
}
