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结构的指针
Public Declare Function WSAstartup Lib "wsock32.dll" Alias "WSAStartup" (ByVal wVersionRequired As Integer, ByRef lpWSAData As WSAdata) As Long
Public Declare Function WsACleanup Lib "wsock32.dll" Alias "WSACleanup" () As Long
Public Declare Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal length As Long)
Public Declare Function lstrlen Lib "kernel32.dll" Alias "lstrlenA" (ByVal lpString As Any) As Long
Public Declare Function lstrcpy Lib "kernel32.dll" Alias "lstrcpyA" (ByVal lpString1 As Any, ByVal lpString2 As Any) As Long
Public Declare Function inet_ntoa Lib "wsock32.dll" (ByVal addr As Long) As Long
Public Declare Function gethostname Lib "wsock32.dll" (ByVal name As String, ByVal namelen As Long) As Long
Public Declare Function gethostbyname Lib "wsock32.dll" (ByVal name As String) As Long
Public Declare Function closesocket Lib "wsock32.dll" (ByVal s As Long) As Long
Public Declare Function recv Lib "wsock32.dll" (ByVal s As Long, buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function socket Lib "wsock32.dll" (ByVal af As Long, ByVal s_type As Long, ByVal protocol As Long) As Long
Public Declare Function WSAAsyncSelect Lib "wsock32.dll" (ByVal s As Long, ByVal hWnd As Long, ByVal wMsg As Long, ByVal lEvent As Long) As Long
Public Declare Function WSAIoctl Lib "ws2_32.dll" (ByVal s As Long, ByVal dwIoControlCode As Long, lpvInBuffer As Any, ByVal cbInBuffer As Long, lpvOutBuffer As Any, ByVal cbOutBuffer As Long, lpcbBytesReturned As Long, lpOverlapped As Long, lpCompletionRoutine As Long) As Long
Public Declare Function inet_addr Lib "wsock32.dll" (ByVal cp As String) As Long
Public Declare Function bind Lib "wsock32.dll" (ByVal s As Integer, addr As sockaddr, ByVal namelen As Integer) As Integer
Public Declare Function ntohs Lib "wsock32.dll" (ByVal netshort As Long) As Integer
Public Type WSAdata
wVersion As Integer
wHighVersion As Integer
szDescription As String * 255
szSystemStatus As String * 128
iMaxSockets As Integer
iMaxUdpDg As Integer
lpVendorInfo As Long
End Type
''''sock 地址结构
Public Type sockaddr
sin_family As Integer
sin_port As Integer
sin_addr As Long
sin_zero As String * 8
End Type
Public Type HOSTENT
h_name As Long
h_aliases As Long
h_addrtype As Integer
h_length As Integer
h_addr_list As Long
End Type
''''ip 头结构
Public Type ipheader
lenver As Byte
tos As Byte
len As Integer
ident As Integer
flags As Integer
ttl As Byte
proto As Byte
checksum As Integer
sourceIP As Long
destIP As Long
End Type
''''TCP 头结构
Public Type tcp_hdr
th_sport As Integer
th_dport As Integer
th_seq As Long
th_ack As Long
th_lenres As Byte
th_flag As Byte
th_win As Integer
th_sum As Integer
th_urp As Integer
End Type
''''UDP 头结构
Public Type udp_hdr
th_sport As Integer
th_dport As Integer
th_len As Integer
th_sum As Integer
End Type
''''ICMP 头结构
Public Type icmp_hdr
th_type As Byte
th_code As Byte
th_sum As Integer
th_id As Integer
th_seq As Integer
th_time As Long
End Type
''''常量
Public Const PF_INET = 2
Public Const SOCK_RAW = 3
Public Const AF_INET = 2
Public Const FD_READ = &H1
Public Const SIO_RCVALL = &H98000001
Public Const EM_REPLACESEL = &HC2 Public host As HOSTENT
Public s As Long
Public sock As sockaddr Public Header As ipheader
Public tcpHead As tcp_hdr
Public udpHead As udp_hdr
Public icmpHead As icmp_hdr
Public resarray() As Long, str As String
Public i As Long, CountID As Long ''''i 为临时变量，循环语句用，CountID 用来计算一共有多少个数据包
Public protocol As String
Public buffer() As Byte ''''存放数据包
Public res As Long ''''返回值，临时变量
Public ExitID As Boolean ''''退出标识
''''开始
Public Sub Wstartup()
Dim Data As WSAdata
Call WSAstartup(&H202, Data) ''''初始化 Winsock 为 2.2
End Sub
''''结束
Public Sub WCleanup(s As Long)
Call WsACleanup ''''关闭 Winsock
closesocket s
End Sub ''''获得当前主机的 IP
Public Function ip(ByRef address As String) As String
Dim pip As Long
Dim uip As Long
Dim s As Long
Dim ss As String
Dim cul As Long CopyMemory host, ByVal gethostbyname(address), Len(host) ''''将 gethostbyname 获得的值放到 host
CopyMemory pip, ByVal host.h_addr_list, 4 ''''将 host.h_addr_list 的值放到 pip
CopyMemory uip, ByVal pip, 4 ''''将 pip 的值放到 uip
s = inet_ntoa(uip) ''''将 uip 转换为标准的 IPV4 格式
ss = Space(lstrlen(s)) ''''去掉空格
cul = lstrcpy(ss, s)
ip = ss ''''获得 IPV4 格式的地址并将其放如 ip
End Function ''''获得当前机器的主机名
Public Function hostname() As String
Dim r As Long
Dim s As String
Dim host As String Wstartup
host = String(255, 0)
r = gethostname(host, 255) ''''获得当前主机的主机名 If r = 0 Then
hostname = Left(host, InStr(1, host, vbNullChar) - 1)
End If End Function ''''连接 IP
Public Sub Connecting(ByRef ip As String, pic As PictureBox)
Dim res As Long, buf As Long, bufb As Long
buf = 1 Wstartup & 上一页 [1] [2] [3] [4] [5] [6] 下一页
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