//这个是把ip部分转为字节数组用的
public Int32 pshto(psdHeader psh, byte[] buffer, int size)
{
Int32 rtn;
int index = 0;
byte[] b_psh_saddr = BitConverter.GetBytes(psh.saddr);
byte[] b_psh_daddr = BitConverter.GetBytes(psh.daddr);
byte[] b_psh_mbz = new byte[1];
b_psh_mbz[0] = psh.mbz;
byte[] b_psh_ptcl = new byte[1];
b_psh_ptcl[0] = psh.ptcl;
byte[] b_psh_tcpl = BitConverter.GetBytes(psh.tcpl);
Array.Copy(b_psh_saddr, 0, buffer, index, b_psh_saddr.Length);
index += b_psh_saddr.Length;
Array.Copy(b_psh_daddr, 0, buffer, index, b_psh_daddr.Length);
index += b_psh_daddr.Length;
Array.Copy(b_psh_mbz, 0, buffer, index, b_psh_mbz.Length);
index += b_psh_mbz.Length;
Array.Copy(b_psh_ptcl, 0, buffer, index, b_psh_ptcl.Length);
index += b_psh_ptcl.Length;
Array.Copy(b_psh_tcpl, 0, buffer, index, b_psh_tcpl.Length);
index += b_psh_tcpl.Length;
if (index != size)
{
rtn = -1;
return(rtn);
}
else
{
rtn = index;
return(rtn);
}
}
//这个使用来计算校验码的我照抄c#实现ping那文章的方法，反正ip协议计算校验码方法都一样
public syn(uint _ip, ushort _port, EndPoint _ep, Random _rand)
{
ip = _ip;
port = _port;
ep = _ep;
rand = _rand;
ipHeader iph = new ipHeader();
psh = new psdHeader();
tch = new tcpHeader();
sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1);
//这2个挺重要，必须这样才可以自己提供ip头
}
//这个使用来计算校验码的我照抄c#实现ping那文章的方法，反正ip协议计算校验码方法都一样
public syn(uint _ip, ushort _port, EndPoint _ep, Random _rand)
{
ip = _ip;
port = _port;
ep = _ep;
rand = _rand;
ipHeader iph = new ipHeader();
psh = new psdHeader();
tch = new tcpHeader();
sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1);
//这2个挺重要，必须这样才可以自己提供ip头
}
//这个是把ip部分转为字节数组用的
public Int32 pshto(psdHeader psh, byte[] buffer, int size)
{
Int32 rtn;
int index = 0;
byte[] b_psh_saddr = BitConverter.GetBytes(psh.saddr);
byte[] b_psh_daddr = BitConverter.GetBytes(psh.daddr);
byte[] b_psh_mbz = new byte[1];
b_psh_mbz[0] = psh.mbz;
byte[] b_psh_ptcl = new byte[1];
b_psh_ptcl[0] = psh.ptcl;
byte[] b_psh_tcpl = BitConverter.GetBytes(psh.tcpl);
Array.Copy(b_psh_saddr, 0, buffer, index, b_psh_saddr.Length);
index += b_psh_saddr.Length;
Array.Copy(b_psh_daddr, 0, buffer, index, b_psh_daddr.Length);
index += b_psh_daddr.Length;
Array.Copy(b_psh_mbz, 0, buffer, index, b_psh_mbz.Length);
index += b_psh_mbz.Length;
Array.Copy(b_psh_ptcl, 0, buffer, index, b_psh_ptcl.Length);
index += b_psh_ptcl.Length;
Array.Copy(b_psh_tcpl, 0, buffer, index, b_psh_tcpl.Length);
index += b_psh_tcpl.Length;
if (index != size)
{
rtn = -1;
return rtn;
}
else
{
rtn = index;
return rtn;
}
}
