晚上为什么听见奇怪的声音?有小孩哭声，大人的聊天声，但是一般都在晚上十点左右，睁开眼又什么都没有 如何在家赚钱

\u7528C#\u7f16\u5199\u5173\u4e8e\u67e5\u770b\u7f51\u7edc\u6d41\u91cf\u7b49\u529f\u80fd\u7684\u5fc5\u5907\u77e5\u8bc6\u3002\uff08\u8bf7\u8be6\u7ec6\u8bf4\u660e\uff09

\u4f60\u53ef\u4ee5\u5148\u4e86\u89e3\u4e0bP2P\u7684\u5177\u4f53\u8d44\u6599\uff0c\u300aC#\u7f51\u7edc\u7f16\u7a0b\u5b9e\u4f8b\u6559\u7a0b\u300b \u8fd9\u672c\u4e66\u4e0a\u8bf4\u7684\u662f\u7f51\u7edc\u534f\u8bae\u65b9\u9762\u7684\u5f00\u53d1

\u4e0b\u9762\u662f\u6211\u5728\u7f51\u4e0a\u627e\u7684\u4e00\u5199P2P\u5f00\u53d1\u7684\u8d44\u6599\u4f60\u770b\u4e0b

\u7528C#\u7684Raw Socket\u5b9e\u73b0\u7f51\u7edc\u5c01\u5305\u76d1\u89c6 \u53ef\u7528\u4e8eP2P\u7f16\u7a0b
\u8c08\u8d77socket\u7f16\u7a0b\uff0c\u5927\u5bb6\u4e5f\u8bb8\u4f1a\u60f3\u8d77QQ\u548cIE\uff0c\u6ca1\u9519\u3002\u8fd8\u6709\u8bb8\u591a\u7f51\u7edc\u5de5\u5177\u5982P2P\u3001NetMeeting\u7b49\u5728\u5e94\u7528\u5c42\u5b9e\u73b0\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e5f\u662f\u7528socket\u6765\u5b9e\u73b0\u7684\u3002Socket\u662f\u4e00\u4e2a\u7f51\u7edc\u7f16\u7a0b\u63a5\u53e3\uff0c\u5b9e\u73b0\u4e8e\u7f51\u7edc\u5e94\u7528\u5c42\uff0cWindows Socket\u5305\u62ec\u4e86\u4e00\u5957\u7cfb\u7edf\u7ec4\u4ef6\uff0c\u5145\u5206\u5229\u7528\u4e86Microsoft Windows \u6d88\u606f\u9a71\u52a8\u7684\u7279\u70b9\u3002Socket\u89c4\u83031.1\u7248\u662f\u57281993\u5e741\u6708\u53d1\u884c\u7684\uff0c\u5e76\u5e7f\u6cdb\u7528\u4e8e\u6b64\u540e\u51fa\u73b0\u7684Windows9x\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u3002Socket\u89c4\u83032.2\u7248\uff08\u5176\u5728Windows\u5e73\u53f0\u4e0a\u7684\u7248\u672c\u662fWinsock2.2\uff0c\u4e5f\u53ebWinsock2\uff09\u5728 1996 \u5e74 5 \u6708\u53d1\u884c\uff0cWindows NT 5.0\u53ca\u4ee5\u540e\u7248\u672c\u7684Windows\u7cfb\u7edf\u652f\u6301Winsock2\uff0c\u5728Winsock2\u4e2d\uff0c\u652f\u6301\u591a\u4e2a\u4f20\u8f93\u534f\u8bae\u7684\u539f\u59cb\u5957\u63a5\u5b57\uff0c\u91cd\u53e0I/O\u6a21\u578b\u3001\u670d\u52a1\u8d28\u91cf\u63a7\u5236\u7b49\u3002

\u672c\u6587\u5411\u5927\u5bb6\u4ecb\u7ecdWindows Sockets\u7684\u4e00\u4e9b\u5173\u4e8e\u7528C#\u5b9e\u73b0\u7684\u539f\u59cb\u5957\u63a5\u5b57(Raw Socket)\u7684\u7f16\u7a0b\uff0c\u4ee5\u53ca\u5728\u6b64\u57fa\u7840\u4e0a\u5b9e\u73b0\u7684\u7f51\u7edc\u5c01\u5305\u76d1\u89c6\u6280\u672f\u3002\u540cWinsock1\u76f8\u6bd4\uff0cWinsock2\u6700\u660e\u663e\u7684\u5c31\u662f\u652f\u6301\u4e86Raw Socket\u5957\u63a5\u5b57\u7c7b\u578b\uff0c\u4f7f\u7528Raw Socket\uff0c\u53ef\u628a\u7f51\u5361\u8bbe\u7f6e\u6210\u6df7\u6742\u6a21\u5f0f\uff0c\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u6211\u4eec\u53ef\u4ee5\u6536\u5230\u7f51\u7edc\u4e0a\u7684IP\u5305\uff0c\u5f53\u7136\u5305\u62ec\u76ee\u7684\u4e0d\u662f\u672c\u673a\u7684IP\u5305\uff0c\u901a\u8fc7\u539f\u59cb\u5957\u63a5\u5b57\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u66f4\u52a0\u81ea\u5982\u5730\u63a7\u5236Windows\u4e0b\u7684\u591a\u79cd\u534f\u8bae\uff0c\u800c\u4e14\u80fd\u591f\u5bf9\u7f51\u7edc\u5e95\u5c42\u7684\u4f20\u8f93\u673a\u5236\u8fdb\u884c\u63a7\u5236\u3002

\u5728\u672c\u6587\u4f8b\u5b50\u4e2d\uff0c\u6211\u5728nbyte.BasicClass\u547d\u540d\u7a7a\u95f4\u5b9e\u73b0\u4e86RawSocket\u7c7b\uff0c\u5b83\u5305\u542b\u4e86\u6211\u4eec\u5b9e\u73b0\u6570\u636e\u5305\u76d1\u89c6\u7684\u6838\u5fc3\u6280\u672f\u3002\u5728\u5b9e\u73b0\u8fd9\u4e2a\u7c7b\u4e4b\u524d\uff0c\u9700\u8981\u5148\u5199\u4e00\u4e2aIP\u5934\u7ed3\u6784\uff0c\u6765\u6682\u65f6\u5b58\u653e\u4e00\u4e9b\u6709\u5173\u7f51\u7edc\u5c01\u5305\u7684\u4fe1\u606f\uff1a

[StructLayout(LayoutKind.Explicit)]
public struct IPHeader
{
[FieldOffset(0)] public byte ip_verlen; //I4\u4f4d\u9996\u90e8\u957f\u5ea6+4\u4f4dIP\u7248\u672c\u53f7
[FieldOffset(1)] public byte ip_tos; //8\u4f4d\u670d\u52a1\u7c7b\u578bTOS
[FieldOffset(2)] public ushort ip_totallength; //16\u4f4d\u6570\u636e\u5305\u603b\u957f\u5ea6\uff08\u5b57\u8282\uff09
[FieldOffset(4)] public ushort ip_id; //16\u4f4d\u6807\u8bc6
[FieldOffset(6)] public ushort ip_offset; //3\u4f4d\u6807\u5fd7\u4f4d
[FieldOffset(8)] public byte ip_ttl; //8\u4f4d\u751f\u5b58\u65f6\u95f4 TTL
[FieldOffset(9)] public byte ip_protocol; //8\u4f4d\u534f\u8bae(TCP, UDP, ICMP, Etc.)
[FieldOffset(10)] public ushort ip_checksum; //16\u4f4dIP\u9996\u90e8\u6821\u9a8c\u548c
[FieldOffset(12)] public uint ip_srcaddr; //32\u4f4d\u6e90IP\u5730\u5740
[FieldOffset(16)] public uint ip_destaddr; //32\u4f4d\u76ee\u7684IP\u5730\u5740
}

\u8fd9\u6837\uff0c\u5f53\u6bcf\u4e00\u4e2a\u5c01\u5305\u5230\u8fbe\u65f6\u5019\uff0c\u53ef\u4ee5\u7528\u5f3a\u5236\u7c7b\u578b\u8f6c\u5316\u628a\u5305\u4e2d\u7684\u6570\u636e\u6d41\u8f6c\u5316\u4e3a\u4e00\u4e2a\u4e2aIPHeader\u5bf9\u8c61\u3002

\u4e0b\u9762\u5c31\u5f00\u59cb\u5199RawSocket\u7c7b\u4e86\uff0c\u4e00\u5f00\u59cb\uff0c\u5148\u5b9a\u4e49\u51e0\u4e2a\u53c2\u6570\uff0c\u5305\u62ec\uff1a

private bool error_occurred; //\u5957\u63a5\u5b57\u5728\u63a5\u6536\u5305\u65f6\u662f\u5426\u4ea7\u751f\u9519\u8bef
public bool KeepRunning; //\u662f\u5426\u7ee7\u7eed\u8fdb\u884c
private static int len_receive_buf; //\u5f97\u5230\u7684\u6570\u636e\u6d41\u7684\u957f\u5ea6
byte [] receive_buf_bytes; //\u6536\u5230\u7684\u5b57\u8282
private Socket socket = null; //\u58f0\u660e\u5957\u63a5\u5b57

\u8fd8\u6709\u4e00\u4e2a\u5e38\u91cf\uff1a

const int SIO_RCVALL = unchecked((int)0x98000001);//\u76d1\u542c\u6240\u6709\u7684\u6570\u636e\u5305

\u8fd9\u91cc\u7684SIO_RCVALL\u662f\u6307\u793aRawSocket\u63a5\u6536\u6240\u6709\u7684\u6570\u636e\u5305\uff0c\u5728\u4ee5\u540e\u7684IOContrl\u51fd\u6570\u4e2d\u8981\u7528\uff0c\u5728\u4e0b\u9762\u7684\u6784\u9020\u51fd\u6570\u4e2d\uff0c\u5b9e\u73b0\u4e86\u5bf9\u4e00\u4e9b\u53d8\u91cf\u53c2\u6570\u7684\u521d\u59cb\u5316\uff1a

public RawSocket() //\u6784\u9020\u51fd\u6570
{
error_occurred=false;
len_receive_buf = 4096;
receive_buf_bytes = new byte[len_receive_buf];
}


\u4e0b\u9762\u7684\u51fd\u6570\u5b9e\u73b0\u4e86\u521b\u5efaRawSocket\uff0c\u5e76\u628a\u5b83\u4e0e\u7ec8\u7ed3\u70b9\uff08IPEndPoint\uff1a\u672c\u673aIP\u548c\u7aef\u53e3\uff09\u7ed1\u5b9a\uff1a

public void CreateAndBindSocket(string IP) //\u5efa\u7acb\u5e76\u7ed1\u5b9a\u5957\u63a5\u5b57
{
socket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
socket.Blocking = false; //\u7f6esocket\u975e\u963b\u585e\u72b6\u6001
socket.Bind(new IPEndPoint(IPAddress.Parse(IP), 0)); //\u7ed1\u5b9a\u5957\u63a5\u5b57

if (SetSocketOption()==false) error_occurred=true;
}


\u5176\u4e2d\uff0c\u5728\u521b\u5efa\u5957\u63a5\u5b57\u7684\u4e00\u53e5socket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);\u4e2d\u67093\u4e2a\u53c2\u6570\uff1a

\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8bbe\u5b9a\u5730\u5740\u65cf\uff0cMSDN\u4e0a\u7684\u63cf\u8ff0\u662f\u201c\u6307\u5b9a Socket \u5b9e\u4f8b\u7528\u6765\u89e3\u6790\u5730\u5740\u7684\u5bfb\u5740\u65b9\u6848\u201d\uff0c\u5f53\u8981\u628a\u5957\u63a5\u5b57\u7ed1\u5b9a\u5230\u7ec8\u7ed3\u70b9\uff08IPEndPoint\uff09\u65f6\uff0c\u9700\u8981\u4f7f\u7528InterNetwork\u6210\u5458\uff0c\u5373\u91c7\u7528IP\u7248\u672c4\u7684\u5730\u5740\u683c\u5f0f\uff0c\u8fd9\u4e5f\u662f\u5f53\u4eca\u5927\u591a\u6570\u5957\u63a5\u5b57\u7f16\u7a0b\u6240\u91c7\u7528\u4e00\u4e2a\u5bfb\u5740\u65b9\u6848\uff08AddressFamily\uff09\u3002

\u7b2c\u4e8c\u4e2a\u53c2\u6570\u8bbe\u7f6e\u7684\u5957\u63a5\u5b57\u7c7b\u578b\u5c31\u662f\u6211\u4eec\u4f7f\u7528\u7684Raw\u7c7b\u578b\u4e86\uff0cSocketType\u662f\u4e00\u4e2a\u679a\u4e3e\u6570\u636e\u7c7b\u578b\uff0cRaw\u5957\u63a5\u5b57\u7c7b\u578b\u652f\u6301\u5bf9\u57fa\u7840\u4f20\u8f93\u534f\u8bae\u7684\u8bbf\u95ee\u3002\u901a\u8fc7\u4f7f\u7528 SocketType.Raw\uff0c\u4f60\u4e0d\u5149\u53ef\u4ee5\u4f7f\u7528\u4f20\u8f93\u63a7\u5236\u534f\u8bae(Tcp)\u548c\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae(Udp)\u8fdb\u884c\u901a\u4fe1\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7f51\u9645\u6d88\u606f\u63a7\u5236\u534f\u8bae (Icmp) \u548c Internet \u7ec4\u7ba1\u7406\u534f\u8bae (Igmp) \u6765\u8fdb\u884c\u901a\u4fe1\u3002\u5728\u53d1\u9001\u65f6\uff0c\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u5fc5\u987b\u63d0\u4f9b\u5b8c\u6574\u7684 IP \u6807\u5934\u3002\u6240\u63a5\u6536\u7684\u6570\u636e\u62a5\u5728\u8fd4\u56de\u65f6\u4f1a\u4fdd\u6301\u5176 IP \u6807\u5934\u548c\u9009\u9879\u4e0d\u53d8\u3002

\u7b2c\u4e09\u4e2a\u53c2\u6570\u8bbe\u7f6e\u534f\u8bae\u7c7b\u578b\uff0cSocket \u7c7b\u4f7f\u7528 ProtocolType \u679a\u4e3e\u6570\u636e\u7c7b\u578b\u5411 Windows Socket API \u901a\u77e5\u6240\u8bf7\u6c42\u7684\u534f\u8bae\u3002\u8fd9\u91cc\u4f7f\u7528\u7684\u662fIP\u534f\u8bae\uff0c\u6240\u4ee5\u8981\u91c7\u7528ProtocolType.IP\u53c2\u6570\u3002

\u5728CreateAndBindSocket\u51fd\u6570\u4e2d\u6709\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7684SetSocketOption\u51fd\u6570\uff0c\u5b83\u548cSocket\u7c7b\u4e2d\u7684SetSocketOption\u4e0d\u540c\uff0c\u6211\u4eec\u5728\u8fd9\u91cc\u5b9a\u4e49\u7684\u662f\u5177\u6709IO\u63a7\u5236\u529f\u80fd\u7684SetSocketOption\uff0c\u5b83\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a

private bool SetSocketOption() //\u8bbe\u7f6eraw socket
{
bool ret_value = true;
try
{
socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1);
byte []IN = new byte[4]{1, 0, 0, 0};
byte []OUT = new byte[4];

//\u4f4e\u7ea7\u522b\u64cd\u4f5c\u6a21\u5f0f,\u63a5\u53d7\u6240\u6709\u7684\u6570\u636e\u5305\uff0c\u8fd9\u4e00\u6b65\u662f\u5173\u952e\uff0c\u5fc5\u987b\u628asocket\u8bbe\u6210raw\u548cIP Level\u624d\u53ef\u7528SIO_RCVALL
int ret_code = socket.IOControl(SIO_RCVALL, IN, OUT);
ret_code = OUT[0] + OUT[1] + OUT[2] + OUT[3];//\u628a4\u4e2a8\u4f4d\u5b57\u8282\u5408\u6210\u4e00\u4e2a32\u4f4d\u6574\u6570
if(ret_code != 0) ret_value = false;
}
catch(SocketException)
{
ret_value = false;
}
return ret_value;
}

\u5176\u4e2d\uff0c\u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879\u65f6\u5fc5\u987b\u4f7f\u5957\u63a5\u5b57\u5305\u542bIP\u5305\u5934\uff0c\u5426\u5219\u65e0\u6cd5\u586b\u5145IPHeader\u7ed3\u6784\uff0c\u4e5f\u65e0\u6cd5\u83b7\u5f97\u6570\u636e\u5305\u4fe1\u606f\u3002

int ret_code = socket.IOControl(SIO_RCVALL, IN, OUT);\u662f\u51fd\u6570\u4e2d\u6700\u5173\u952e\u7684\u4e00\u6b65\u4e86\uff0c\u56e0\u4e3a\uff0c\u5728windows\u4e2d\u6211\u4eec\u4e0d\u80fd\u7528Receive\u51fd\u6570\u6765\u63a5\u6536raw socket\u4e0a\u7684\u6570\u636e\uff0c\u8fd9\u662f\u56e0\u4e3a\uff0c\u6240\u6709\u7684IP\u5305\u90fd\u662f\u5148\u9012\u4ea4\u7ed9\u7cfb\u7edf\u6838\u5fc3\uff0c\u7136\u540e\u518d\u4f20\u8f93\u5230\u7528\u6237\u7a0b\u5e8f\uff0c\u5f53\u53d1\u9001\u4e00\u4e2araws socket\u5305\u7684\u65f6\u5019\uff08\u6bd4\u5982syn\uff09\uff0c\u6838\u5fc3\u5e76\u4e0d\u77e5\u9053\uff0c\u4e5f\u6ca1\u6709\u8fd9\u4e2a\u6570\u636e\u88ab\u53d1\u9001\u6216\u8005\u8fde\u63a5\u5efa\u7acb\u7684\u8bb0\u5f55\uff0c\u56e0\u6b64\uff0c\u5f53\u8fdc\u7aef\u4e3b\u673a\u56de\u5e94\u7684\u65f6\u5019\uff0c\u7cfb\u7edf\u6838\u5fc3\u5c31\u628a\u8fd9\u4e9b\u5305\u90fd\u5168\u90e8\u4e22\u6389\uff0c\u4ece\u800c\u5230\u4e0d\u4e86\u5e94\u7528\u7a0b\u5e8f\u4e0a\u3002\u6240\u4ee5\uff0c\u5c31\u4e0d\u80fd\u7b80\u5355\u5730\u4f7f\u7528\u63a5\u6536\u51fd\u6570\u6765\u63a5\u6536\u8fd9\u4e9b\u6570\u636e\u62a5\u3002\u8981\u8fbe\u5230\u63a5\u6536\u6570\u636e\u7684\u76ee\u7684\uff0c\u5c31\u5fc5\u987b\u91c7\u7528\u55c5\u63a2\uff0c\u63a5\u6536\u6240\u6709\u901a\u8fc7\u7684\u6570\u636e\u5305\uff0c\u7136\u540e\u8fdb\u884c\u7b5b\u9009\uff0c\u7559\u4e0b\u7b26\u5408\u6211\u4eec\u9700\u8981\u7684\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eSIO_RCVALL\uff0c\u8868\u793a\u63a5\u6536\u6240\u6709\u7f51\u7edc\u4e0a\u7684\u6570\u636e\u5305\u3002\u63a5\u4e0b\u6765\u4ecb\u7ecd\u4e00\u4e0bIOControl\u51fd\u6570\u3002MSDN\u89e3\u91ca\u5b83\u8bf4\u662f\u8bbe\u7f6e\u5957\u63a5\u5b57\u4e3a\u4f4e\u7ea7\u522b\u64cd\u4f5c\u6a21\u5f0f\uff0c\u600e\u4e48\u4f4e\u7ea7\u522b\u64cd\u4f5c\u6cd5\uff1f\u5176\u5b9e\u8fd9\u4e2a\u51fd\u6570\u4e0eAPI\u4e2d\u7684WSAIoctl\u51fd\u6570\u5f88\u76f8\u4f3c\u3002WSAIoctl\u51fd\u6570\u5b9a\u4e49\u5982\u4e0b\uff1a

int WSAIoctl(
SOCKET s, //\u4e00\u4e2a\u6307\u5b9a\u7684\u5957\u63a5\u5b57
DWORD dwIoControlCode, //\u63a7\u5236\u64cd\u4f5c\u7801
LPVOID lpvInBuffer, //\u6307\u5411\u8f93\u5165\u6570\u636e\u6d41\u7684\u6307\u9488
DWORD cbInBuffer, //\u8f93\u5165\u6570\u636e\u6d41\u7684\u5927\u5c0f\uff08\u5b57\u8282\u6570\uff09
LPVOID lpvOutBuffer, // \u6307\u5411\u8f93\u51fa\u6570\u636e\u6d41\u7684\u6307\u9488
DWORD cbOutBuffer, //\u8f93\u51fa\u6570\u636e\u6d41\u7684\u5927\u5c0f\uff08\u5b57\u8282\u6570\uff09
LPDWORD lpcbBytesReturned, //\u6307\u5411\u8f93\u51fa\u5b57\u8282\u6d41\u6570\u76ee\u7684\u5b9e\u6570\u503c
LPWSAOVERLAPPED lpOverlapped, //\u6307\u5411\u4e00\u4e2aWSAOVERLAPPED\u7ed3\u6784
LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine//\u6307\u5411\u64cd\u4f5c\u5b8c\u6210\u65f6\u6267\u884c\u7684\u4f8b\u7a0b
);

C#\u7684IOControl\u51fd\u6570\u4e0d\u50cfWSAIoctl\u51fd\u6570\u90a3\u4e48\u590d\u6742\uff0c\u5176\u4e2d\u53ea\u5305\u62ec\u5176\u4e2d\u7684\u63a7\u5236\u64cd\u4f5c\u7801\u3001\u8f93\u5165\u5b57\u8282\u6d41\u3001\u8f93\u51fa\u5b57\u8282\u6d41\u4e09\u4e2a\u53c2\u6570\uff0c\u4e0d\u8fc7\u8fd9\u4e09\u4e2a\u53c2\u6570\u5df2\u7ecf\u8db3\u591f\u4e86\u3002\u6211\u4eec\u770b\u5230\u51fd\u6570\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5b57\u8282\u6570\u7ec4\uff1abyte []IN = new byte[4]{1, 0, 0, 0}\u5b9e\u9645\u4e0a\u5b83\u662f\u4e00\u4e2a\u503c\u4e3a1\u7684DWORD\u6216\u662fInt32\uff0c\u540c\u6837byte []OUT = new byte[4];\u4e5f\u662f\uff0c\u5b83\u6574\u548c\u4e86\u4e00\u4e2aint,\u4f5c\u4e3aWSAIoctl\u51fd\u6570\u4e2d\u53c2\u6570lpcbBytesReturned\u6307\u5411\u7684\u503c\u3002

\u56e0\u4e3a\u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879\u65f6\u53ef\u80fd\u4f1a\u53d1\u751f\u9519\u8bef\uff0c\u9700\u8981\u7528\u4e00\u4e2a\u503c\u4f20\u9012\u9519\u8bef\u6807\u5fd7\uff1a

public bool ErrorOccurred
{
get
{
return error_occurred;
}
}

\u4e0b\u9762\u7684\u51fd\u6570\u5b9e\u73b0\u7684\u6570\u636e\u5305\u7684\u63a5\u6536\uff1a

//\u89e3\u6790\u63a5\u6536\u7684\u6570\u636e\u5305\uff0c\u5f62\u6210PacketArrivedEventArgs\u4e8b\u4ef6\u6570\u636e\u7c7b\u5bf9\u8c61\uff0c\u5e76\u5f15\u53d1PacketArrival\u4e8b\u4ef6
unsafe private void Receive(byte [] buf, int len)
{
byte temp_protocol=0;
uint temp_version=0;
uint temp_ip_srcaddr=0;
uint temp_ip_destaddr=0;
short temp_srcport=0;
short temp_dstport=0;
IPAddress temp_ip;

PacketArrivedEventArgs e=new PacketArrivedEventArgs();//\u65b0\u7f51\u7edc\u6570\u636e\u5305\u4fe1\u606f\u4e8b\u4ef6

fixed(byte *fixed_buf = buf)
{
IPHeader * head = (IPHeader *) fixed_buf;//\u628a\u6570\u636e\u6d41\u6574\u548c\u4e3aIPHeader\u7ed3\u6784
e.HeaderLength=(uint)(head->ip_verlen & 0x0F) << 2;

temp_protocol = head->ip_protocol;
switch(temp_protocol)//\u63d0\u53d6\u534f\u8bae\u7c7b\u578b
{
case 1: e.Protocol="ICMP"; break;
case 2: e.Protocol="IGMP"; break;
case 6: e.Protocol="TCP"; break;
case 17: e.Protocol="UDP"; break;
default: e.Protocol= "UNKNOWN"; break;
}

temp_version =(uint)(head->ip_verlen & 0xF0) >> 4;//\u63d0\u53d6IP\u534f\u8bae\u7248\u672c
e.IPVersion = temp_version.ToString();

//\u4ee5\u4e0b\u8bed\u53e5\u63d0\u53d6\u51fa\u4e86PacketArrivedEventArgs\u5bf9\u8c61\u4e2d\u7684\u5176\u4ed6\u53c2\u6570
temp_ip_srcaddr = head->ip_srcaddr;
temp_ip_destaddr = head->ip_destaddr;
temp_ip = new IPAddress(temp_ip_srcaddr);
e.OriginationAddress =temp_ip.ToString();
temp_ip = new IPAddress(temp_ip_destaddr);
e.DestinationAddress = temp_ip.ToString();

temp_srcport = *(short *)&fixed_buf[e.HeaderLength];
temp_dstport = *(short *)&fixed_buf[e.HeaderLength+2];
e.OriginationPort=IPAddress.NetworkToHostOrder(temp_srcport).ToString();
e.DestinationPort=IPAddress.NetworkToHostOrder(temp_dstport).ToString();

e.PacketLength =(uint)len;
e.MessageLength =(uint)len - e.HeaderLength;

e.ReceiveBuffer=buf;
//\u628abuf\u4e2d\u7684IP\u5934\u8d4b\u7ed9PacketArrivedEventArgs\u4e2d\u7684IPHeaderBuffer
Array.Copy(buf,0,e.IPHeaderBuffer,0,(int)e.HeaderLength);
//\u628abuf\u4e2d\u7684\u5305\u4e2d\u5185\u5bb9\u8d4b\u7ed9PacketArrivedEventArgs\u4e2d\u7684MessageBuffer
Array.Copy(buf,(int)e.HeaderLength,e.MessageBuffer,0,(int)e.MessageLength);
}
//\u5f15\u53d1PacketArrival\u4e8b\u4ef6
OnPacketArrival(e);
}

\u5927\u5bb6\u6ce8\u610f\u5230\u4e86\uff0c\u5728\u4e0a\u9762\u7684\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u6307\u9488\u8fd9\u79cd\u6240\u8c13\u7684\u4e0d\u5b89\u5168\u4ee3\u7801\uff0c\u53ef\u89c1\u5728C#\u4e2d\u6307\u9488\u548c\u79fb\u4f4d\u8fd0\u7b97\u8fd9\u4e9b\u539f\u59cb\u64cd\u4f5c\u4e5f\u53ef\u4ee5\u7ed9\u7a0b\u5e8f\u5458\u5e26\u6765\u7f16\u7a0b\u4e0a\u7684\u4fbf\u5229\u3002\u5728\u51fd\u6570\u4e2d\u58f0\u660ePacketArrivedEventArgs\u7c7b\u5bf9\u8c61\uff0c\u4ee5\u4fbf\u901a\u8fc7OnPacketArrival(e)\u51fd\u6570\u901a\u8fc7\u4e8b\u4ef6\u628a\u6570\u636e\u5305\u4fe1\u606f\u4f20\u9012\u51fa\u53bb\u3002\u5176\u4e2dPacketArrivedEventArgs\u7c7b\u662fRawSocket\u7c7b\u4e2d\u7684\u5d4c\u5957\u7c7b\uff0c\u5b83\u7ee7\u627f\u4e86\u7cfb\u7edf\u4e8b\u4ef6\uff08Event\uff09\u7c7b\uff0c\u5c01\u88c5\u4e86\u6570\u636e\u5305\u7684IP\u3001\u7aef\u53e3\u3001\u534f\u8bae\u7b49\u5176\u4ed6\u6570\u636e\u5305\u5934\u4e2d\u5305\u542b\u7684\u4fe1\u606f\u3002\u5728\u542f\u52a8\u63a5\u6536\u6570\u636e\u5305\u7684\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u5f02\u6b65\u64cd\u4f5c\u7684\u65b9\u6cd5\uff0c\u4ee5\u4e0b\u51fd\u6570\u5f00\u542f\u4e86\u5f02\u6b65\u76d1\u542c\u7684\u63a5\u53e3\uff1a

public void Run() //\u5f00\u59cb\u76d1\u542c
{
IAsyncResult ar = socket.BeginReceive(receive_buf_bytes, 0, len_receive_buf, SocketFlags.None, new AsyncCallback(CallReceive), this);
}

Socket.BeginReceive\u51fd\u6570\u8fd4\u56de\u4e86\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\u7684\u63a5\u53e3\uff0c\u5e76\u5728\u6b64\u63a5\u53e3\u7684\u751f\u6210\u51fd\u6570BeginReceive\u4e2d\u58f0\u660e\u4e86\u5f02\u6b65\u56de\u8c03\u51fd\u6570CallReceive\uff0c\u5e76\u628a\u63a5\u6536\u5230\u7684\u7f51\u7edc\u6570\u636e\u6d41\u4f20\u7ed9receive_buf_bytes\uff0c\u8fd9\u6837\u5c31\u53ef\u7528\u4e00\u4e2a\u5e26\u6709\u5f02\u6b65\u64cd\u4f5c\u7684\u63a5\u53e3\u53c2\u6570\u7684\u5f02\u6b65\u56de\u8c03\u51fd\u6570\u4e0d\u65ad\u5730\u63a5\u6536\u6570\u636e\u5305\uff1a

private void CallReceive(IAsyncResult ar)//\u5f02\u6b65\u56de\u8c03
{
int received_bytes;
received_bytes = socket.EndReceive(ar);
Receive(receive_buf_bytes, received_bytes);
if (KeepRunning) Run();
}

\u6b64\u51fd\u6570\u5f53\u6302\u8d77\u6216\u7ed3\u675f\u5f02\u6b65\u8bfb\u53d6\u540e\u53bb\u63a5\u6536\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u5305\uff0c\u8fd9\u6837\u80fd\u4fdd\u8bc1\u8ba9\u6bcf\u4e00\u4e2a\u6570\u636e\u5305\u90fd\u80fd\u591f\u88ab\u7a0b\u5e8f\u63a2\u6d4b\u5230\u3002

\u4e0b\u9762\u901a\u8fc7\u58f0\u660e\u4ee3\u7406\u4e8b\u4ef6\u53e5\u67c4\u6765\u5b9e\u73b0\u548c\u5916\u754c\u7684\u901a\u4fe1\uff1a

public delegate void PacketArrivedEventHandler(Object sender, PacketArrivedEventArgs args);
//\u4e8b\u4ef6\u53e5\u67c4\uff1a\u5305\u5230\u8fbe\u65f6\u5f15\u53d1\u4e8b\u4ef6
public event PacketArrivedEventHandler PacketArrival;//\u58f0\u660e\u65f6\u95f4\u53e5\u67c4\u51fd\u6570

\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u6570\u636e\u5305\u4fe1\u606f\u7684\u83b7\u53d6\uff0c\u91c7\u7528\u5f02\u6b65\u56de\u8c03\u51fd\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8\u63a5\u6536\u6570\u636e\u5305\u7684\u6548\u7387\uff0c\u5e76\u901a\u8fc7\u4ee3\u7406\u4e8b\u4ef6\u628a\u5c01\u5305\u4fe1\u606f\u4f20\u9012\u5230\u5916\u754c\u3002\u65e2\u7136\u80fd\u628a\u6240\u6709\u7684\u5c01\u5305\u4fe1\u606f\u4f20\u9012\u51fa\u53bb\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u6570\u636e\u5305\u7684\u5206\u6790\u4e86\uff1a\uff09\u4e0d\u8fc7RawSocket\u7684\u4efb\u52a1\u8fd8\u6ca1\u6709\u5b8c\uff0c\u6700\u540e\u4e0d\u8981\u671b\u4e86\u5173\u95ed\u5957\u63a5\u5b57\u554a\uff1a

public void Shutdown() //\u5173\u95edraw socket
{
if(socket != null)
{
socket.Shutdown(SocketShutdown.Both);
socket.Close();
}
}

\u4ee5\u4e0a\u4ecb\u7ecd\u4e86RawSocket\u7c7b\u901a\u8fc7\u6784\u9020IP\u5934\u83b7\u53d6\u4e86\u5305\u4e2d\u7684\u4fe1\u606f\uff0c\u5e76\u901a\u8fc7\u5f02\u6b65\u56de\u8c03\u51fd\u6570\u5b9e\u73b0\u4e86\u6570\u636e\u5305\u7684\u63a5\u6536\uff0c\u5e76\u4f7f\u7528\u65f6\u95f4\u4ee3\u7406\u53e5\u67c4\u548c\u81ea\u5b9a\u4e49\u7684\u6570\u636e\u5305\u4fe1\u606f\u4e8b\u4ef6\u7c7b\u628a\u6570\u636e\u5305\u4fe1\u606f\u53d1\u9001\u51fa\u53bb\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u7f51\u7edc\u6570\u636e\u5305\u7684\u76d1\u89c6\uff0c\u8fd9\u6837\u6211\u4eec\u5c31\u53ef\u4ee5\u5728\u5916\u90e8\u6dfb\u52a0\u4e00\u4e9b\u51fd\u6570\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u5206\u6790\u4e86\u3002

get\u5fc5\u5907\u751f\u6d3b\u5e38\u8bc6

这是幻听的状态，人类有幻觉空间，这主要是语言世界，还有幻境空间，主要是视觉世界。这和人的自然习惯有关系，外在的因素，使人的自然习惯扭曲变形，出现了变异的现象。这本来只是风声鹤鸣，不算怪异，但空气中存在的无线电波，使幻觉更加明显。无线电波是零度以下的声音，当人的听觉或者视觉降低到零度以下时，就会出现幻觉，幻境的现象。

晚上听见奇怪的声音，又大小孩的哭声，大人的聊天声，但这样的话应该是听到外面的猫叫，因为猫发春叫的话是像小孩子哭的声音

可能是你听错了吧，又或许是邻居的声音，不要多想。

在这个情况下，可能是你一天有点太疲惫了，出现幻听了

声音传出来的方向具体在哪里，是不是房子隔音不好邻居的声音

鏅氫笂鍚埌濂囨殑澹伴煶
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鏅氫笂鍚埌鏈瑙勫緥鐨勬暡鍑澹,鍢熷槦鍢熺殑鍝,鏄笉鏄湁楝煎晩
绛旓細鎮ㄥソ锛鏅氫笂鍚埌鏈瑙勫緥鐨勬暡鍑诲０涓嶄竴瀹氭槸鏈夐鐨勶紝鍥犱负楝兼槸涓嶅瓨鍦ㄧ殑锛屾垜浠鐩镐俊绉戝杩欎簺澹伴煶鐨勬潵婧愭湁鍙兘鏄鍦ㄨ淇殑锛岄偦灞呬篃鏈夊彲鑳芥槸琚厫铓鐨勭閬撳彂鍑鐨勫０闊

涓轰粈涔鎴鏅氫笂鐫¤鐨勬椂鍊鍚埌鏈涓绉濂囨殑澹伴煶???
绛旓細鏄綘鐫″墠澶叴濂嬶紝鐫＄潃鏃跺ぇ鑴戣繕澶勪簬娲诲姩鐘舵侊紝鑷嗗康涓鍚埌鐨***澹伴煶銆傚缓璁潯鍓嶄笉瑕佽繃浜庡叴濂嬶紝淇濇寔杞绘澗鐨勫績鎯咃紝浠涔閮戒笉瑕佹兂锛屽氨鏄兂鐫鐫¤锛屽氨涓嶄細鍑虹幇浣犺鐨勬儏鍐典簡銆

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