' Declaramos el objeto al comienzo del codigo (antes del Option Explicit)
Dim WithEvents Winsock1 As CSocketMaster

' Configuramos el winsock en el form_load
Set Winsock1 = New CSocketMaster
Winsock1.Protocol = sckTCPProtocol
Winsock1.Connect "127.0.0.1", 1000

' Cerramos el winsock en el Form_QueryUnload
Winsock1.CloseSck

Option Explicit

#Const WS_CURVERSION = 2


Public Const WS_VERSION_REQD = &H101
Public Const WS_VERSION_MAJOR = WS_VERSION_REQD \ &H100 And &HFF&
Public Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD = 1
Public Const SOCKET_ERROR = -1
Public Const WSADescription_Len = 256
Public Const WSASYS_Status_Len = 128
Public Const FD_SETSIZE = 64

'Network Events.
'
Public Const FD_READ_BIT = 0
Public Const FD_READ = 1
Public Const FD_WRITE_BIT = 1
Public Const FD_WRITE = 2
Public Const FD_OOB_BIT = 2
Public Const FD_OOB = 4
Public Const FD_ACCEPT_BIT = 3
Public Const FD_ACCEPT = 8
Public Const FD_CONNECT_BIT = 4
Public Const FD_CONNECT = 16
Public Const FD_CLOSE_BIT = 5
Public Const FD_CLOSE = 32
Public Const FD_QOS_BIT = 6
Public Const FD_QOS = 64
Public Const FD_GROUP_QOS_BIT = 7
Public Const FD_GROUP_QOS = 128
Public Const FD_ROUTING_INTERFACE_CHANGE_BIT = 8
Public Const FD_ROUTING_INTERFACE_CHANGE = 256
Public Const FD_ADDRESS_LIST_CHANGE_BIT = 9
Public Const FD_ADDRESS_LIST_CHANGE = 512
Public Const FD_MAX_EVENTS = 10
Public Const FD_ALL_EVENTS = 1023

'Namespaces.
'
Public Const NS_ALL = 0

Public Const NS_SAP = 1
Public Const NS_NDS = 2
Public Const NS_PEER_BROWSE = 3

Public Const NS_TCPIP_LOCAL = 10
Public Const NS_TCPIP_HOSTS = 11
Public Const NS_DNS = 12
Public Const NS_NETBT = 13
Public Const NS_WINS = 14

Public Const NS_NBP = 20

Public Const NS_MS = 30
Public Const NS_STDA = 31
Public Const NS_NTDS = 32

Public Const NS_X500 = 40
Public Const NS_NIS = 41
Public Const NS_NISPLUS = 42

Public Const NS_WRQ = 50

Public Const SERVICE_REGISTER = 1
Public Const SERVICE_DEREGISTER = 2
Public Const SERVICE_FLUSH = 3
Public Const SERVICE_FLAG_HARD = &H2

Enum SearchControlFlags
LUP_DEEP = &H1
LUP_CONTAINERS = &H2
LUP_NOCONTAINERS = &H4
LUP_NEAREST = &H8
LUP_RETURN_NAME = &H10
LUP_RETURN_TYPE = &H20
LUP_RETURN_VERSION = &H40
LUP_RETURN_COMMENT = &H80
LUP_RETURN_ADDR = &H100
LUP_RETURN_BLOB = &H200
LUP_RETURN_ALIASES = &H400
LUP_RETURN_QUERY_STRING = &H800
LUP_RETURN_ALL = &HFF0
LUP_RES_SERVICE = &H8000
LUP_FLUSHCACHE = &H1000
LUP_FLUSHPREVIOUS = &H2000
End Type


'Protocolos
'
Enum SockProtocols
IPPROTO_IP = 0 'dummy for IP
IPPROTO_ICMP = 1 'control message protocol
IPPROTO_IPIP = 4
IPPROTO_GGP = 2 ' gateway^2 (deprecated)
IPPROTO_TCP = 6 ' tcp
IPPROTO_EGP = 8
IPPROTO_PUP = 12 ' pup
IPPROTO_UDP = 17 ' user datagram protocol
IPPROTO_IDP = 22 ' xns idp
IPPROTO_ND = 77 ' UNOFFICIAL net disk proto
NSPROTO_IPX = 1000
NSPROTO_SPX = 1256
NSPROTO_SPXII = 1257
End Enum

'Socket types.
'
Enum SockTypes
SOCK_STREAM = 1 'Envía datos como flujo de bytes.
SOCK_DGRAM = 2 'Datagrama. Protocolo de conexión.
SOCK_RAW = 3 '???
SOCK_RDM = 4 'Reliably-Delivered Message (Mensaje confiablemente-entregado)
'Es un protocolo que conserva los límites del mensaje en los
'datos
SOCK_SEQPACKET = 5 'Flujo de paquetes secuenciados. Es esencialmente igual
'que SOCK_RDM.
End Enum

Enum SockPorts
'
'Standard well-known ports
'
IPPORT_ECHO = 7
IPPORT_DISCARD = 9
IPPORT_SYSTAT = 11
IPPORT_DAYTIME = 13
IPPORT_NETSTAT = 15
IPPORT_FTP = 21
IPPORT_TELNET = 23
IPPORT_SMTP = 25
IPPORT_TIMESERVER = 37
IPPORT_NAMESERVER = 42
IPPORT_WHOIS = 43
IPPORT_MTP = 57

IPPORT_TFTP = 69
IPPORT_RJE = 77
IPPORT_FINGER = 79
IPPORT_TTYLINK = 87
IPPORT_SUPDUP = 95

IPPORT_EXECSERVER = 512
IPPORT_LOGINSERVER = 513
IPPORT_CMDSERVER = 514
IPPORT_EFSSERVER = 520

'UDP ports.
'
IPPORT_BIFFUDP = 512
IPPORT_WHOSERVER = 513
IPPORT_ROUTESERVER = 520

'Los puertos menores a este valor están reservados para
'procesos con provilegios.
'
IPPORT_RESERVED = 1024

'Los puertos mayores a este valor están reservados para
'procesos sin privilegios.
'
IPPORT_USERRESERVED = 5000

End Enum

Enum SockErrors
'
'Windows Sockets definitions of regular Berkeley error constants
'

WSABASEERR = 10000
WSAEWOULDBLOCK = (WSABASEERR + 35)
WSAEINPROGRESS = (WSABASEERR + 36)
WSAEALREADY = (WSABASEERR + 37)
WSAENOTSOCK = (WSABASEERR + 38)
WSAEDESTADDRREQ = (WSABASEERR + 39)
WSAEMSGSIZE = (WSABASEERR + 40)
WSAEPROTOTYPE = (WSABASEERR + 41)
WSAENOPROTOOPT = (WSABASEERR + 42)
WSAEPROTONOSUPPORT = (WSABASEERR + 43)
WSAESOCKTNOSUPPORT = (WSABASEERR + 44)
WSAEOPNOTSUPP = (WSABASEERR + 45)
WSAEPFNOSUPPORT = (WSABASEERR + 46)
WSAEAFNOSUPPORT = (WSABASEERR + 47)
WSAEADDRINUSE = (WSABASEERR + 48)
WSAEADDRNOTAVAIL = (WSABASEERR + 49)
WSAENETDOWN = (WSABASEERR + 50)
WSAENETUNREACH = (WSABASEERR + 51)
WSAENETRESET = (WSABASEERR + 52)
WSAECONNABORTED = (WSABASEERR + 53)
WSAECONNRESET = (WSABASEERR + 54)
WSAENOBUFS = (WSABASEERR + 55)
WSAEISCONN = (WSABASEERR + 56)
WSAENOTCONN = (WSABASEERR + 57)
WSAESHUTDOWN = (WSABASEERR + 58)
WSAETOOMANYREFS = (WSABASEERR + 59)
WSAETIMEDOUT = (WSABASEERR + 60)
WSAECONNREFUSED = (WSABASEERR + 61)
WSAELOOP = (WSABASEERR + 62)
WSAENAMETOOLONG = (WSABASEERR + 63)
WSAEHOSTDOWN = (WSABASEERR + 64)
WSAEHOSTUNREACH = (WSABASEERR + 65)
WSAENOTEMPTY = (WSABASEERR + 66)
WSAEPROCLIM = (WSABASEERR + 67)
WSAEUSERS = (WSABASEERR + 68)
WSAEDQUOT = (WSABASEERR + 69)
WSAESTALE = (WSABASEERR + 70)
WSAEREMOTE = (WSABASEERR + 71)
WSAEDISCON = (WSABASEERR + 101)
End Enum

Enum SockAddressFamilies
AF_UNSPEC = 0 'unspecified
AF_UNIX = 1 'local to host (pipes, portals)
AF_INET = 2 'internetwork: UDP, TCP, etc.
AF_IMPLINK = 3 'arpanet imp addresses
AF_PUP = 4 'pup protocols: e.g. BSP
AF_CHAOS = 5 'mit CHAOS protocols
AF_IPX = 6 'IPX and SPX
AF_NS = 6 'XEROX NS protocols
AF_ISO = 7 'ISO protocols
AF_OSI = AF_ISO 'OSI is ISO
AF_ECMA = 8 'european computer manufacturers
AF_DATAKIT = 9 'datakit protocols
AF_CCITT = 10 'CCITT protocols, X.25 etc
AF_SNA = 11 'IBM SNA
AF_DECnet = 12 'DECnet
AF_DLI = 13 'Direct data link interface
AF_LAT = 14 'LAT
AF_HYLINK = 15 'NSC Hyperchannel
AF_APPLETALK = 16 'AppleTalk
AF_NETBIOS = 17 'NetBios-style addresses
End Enum

Type SOCKADDR
sa_family As Integer
sa_data As String * 14
End Type

Type IN_ADDR
s_b1 As Byte
s_b2 As Byte
s_b3 As Byte
s_b4 As Byte
s_w1 As Integer
s_w2 As Integer
End Type

Type SOCKADDR_IN
sin_family As Integer
sin_port As Integer
sin_addr As IN_ADDR
sin_zero As String * 8
End Type

Type OVERLAPPED
Internal As Long
InternalHigh As Long
Offset As Long
OffsetHigh As Long
hEvent As Long
End Type

Type CSADDR_INFO
LocalAddr As Long
RemoteAddr As Long
iSocketType As Long
iProtocol As SockProtocols
End Type

Type HOSTENT
h_name As Long 'official name of host
h_aliases As Long 'alias list
h_addrtype As Integer 'host address type
h_length As Integer
h_addr_list As Long 'list of addresses
End Type


Type PROTOENT
p_name As String
p_aliases(15) As String
p_proto As Integer
End Type

Type SERVENT
s_name As String
s_aliases(15) As String
s_port As Integer
s_proto As String
End Type

Type SERVICE_ADDRESS
dwAddressType As Long
dwAddressFlags As Long
dwAddressLength As Long
dwPrincipalLength As Long
lpAddress As Byte
lpPrincipal As Byte
End Type

Type SERVICE_ADDRESSES
dwAddressCount As Long
Addresses(1) As SERVICE_ADDRESS
End Type

Type BLOB
cbSize As Long
pBlobData As Byte
End Type

Type SERVICE_INFO
lpServiceType As Long
lpServiceName As String
lpComment As String
lpLocale As String
dwDisplayHint As Long
dwVersion As Long
dwTime As Long
lpMachineName As String
lpServiceAddress As SERVICE_ADDRESSES
ServiceSpecificInfo As BLOB
End Type

Type NS_SERVICE_INFO
dwNameSpace As Long
ServiceInfo As SERVICE_INFO
End Type

Type WSADATA
wversion As Integer
wHighVersion As Integer
szDescription(0 To WSADescription_Len) As Byte
szSystemStatus(0 To WSASYS_Status_Len) As Byte
iMaxSockets As Integer
iMaxUdpDg As Integer
lpszVendorInfo As Long
End Type

Type LARGE_INTEGER
lowpart As Long
highpart As Long
End Type

Type FD_SET
fd_count As Long
fd_array(FD_SETSIZE) As Long
End Type

Type TIMEVAL
tv_sec As Long
tv_usec As Long
End Type

Type TRANSMIT_FILE_BUFFERS
Head As Long
HeadLength As Long
Tail As Long
TailLength As Long
End Type

Type FLOWSPEC
TokenRate As Long 'In Bytes/sec
TokenBucketSize As Long 'In Bytes
PeakBandwidth As Long 'In Bytes/sec
Latency As Long 'In microseconds
DelayVariation As Long 'In microseconds
ServiceType As Integer 'Guaranteed, Predictive,
'Best Effort, etc.
MaxSduSize As Long 'In Bytes
MinimumPolicedSize As Long 'In Bytes
End Type

Type PROTOCOL_INFO
dwServiceFlags As Long
iAddressFamily As Long
iMaxSockAddr As Long
iMinSockAddr As Long
iSocketType As Long
iProtocol As Long
dwMessageSize As Long
lpProtocol As Long
End Type

Declare Function accept Lib "ws2_32" (ByVal sck As Long, addr As SOCKADDR, AddrLen As Integer) As Long

Declare Function AcceptEx Lib "ws2_32" (ByVal sListenSocket As Long, ByVal sAcceptSocket As Long, lpOutputBuffer As Any, ByVal dwReceiveDataLength As Long, ByVal dwLocalAddressLength As Long, ByVal dwRemoteAddressLength As Long, lpdwBytesReceived As Long, lpOverlapped As OVERLAPPED) As Long

Declare Function bind Lib "ws2_32" (ByVal sck As Long, name As SOCKADDR, ByVal namelen As Long) As Long
Declare Function closesocket Lib "ws2_32" (ByVal sck As Long) As Long

Declare Function Connect Lib "ws2_32" (ByVal sck As Long, ByVal SckName As String, ByVal namelen As Long) As Long
Declare Function EnumProtocols Lib "ws2_32" Alias "EnumProtocolsA" (ByVal lpiProtocols As SockProtocols, ByVal lpProtocolBuffer As PROTOCOL_INFO, ByVal lpdwBufferLength As Long)

Declare Sub GetAcceptExSockaddrs Lib "ws2_32" (lpOutputBuffer As Any, ByVal dwReceiveDataLength As Long, ByVal dwLocalAddressLength As Long, ByVal dwRemoteAddressLength As Long, LocalSockaddr As Long, LocalSockaddrLength As Long, RemoteSockaddr As Long, RemoteSockaddrLength As Long)

Declare Function GetAddressByName Lib "ws2_32" Alias "GetAddressByNameA" (ByVal dwNameSpace As Long, ByVal lpServiceType As Long, ByVal lpServiceName As Long, ByVal lpiProtocols As SockProtocols, ByVal dwResolution As Long, ByVal lpServiceAsyncInfo As Long, lpCsaddrBuffer As CSADDR_INFO, ByVal lpdwBufferLength As Long, ByVal lpAliasBuffer As Long, ByVal lpdwAliasBufferLength As Long) As Long

Declare Function gethostbyaddr Lib "ws2_32" (ByVal addr As String, ByVal iaddrlen As Long, ByVal iaddrtype As Long) As HOSTENT

Declare Function gethostbyname Lib "ws2_32" (ByVal hostname As String) As Long

Declare Function gethostname Lib "ws2_32" (ByVal name As String, ByVal namelen As Long) As Long

Declare Function GetNameByType Lib "ws2_32" Alias "GetNameByTypeA" (ByVal lpServiceType As Long, ByVal lpServiceName As String, ByVal dwNameLength As Long) As Long

Declare Function getpeername Lib "ws2_32" (ByVal sck As Long, name As SOCKADDR, ByVal namelen As Long) As Long

Declare Function getprotobyname Lib "ws2_32" (ByVal name As String) As PROTOENT

Declare Function getprotobynumber Lib "ws2_32" (ByVal Number As Long) As PROTOENT

Declare Function getservbyname Lib "ws2_32" (ByVal name As String, ByVal proto As String) As SERVENT

Declare Function getservbyport Lib "ws2_32" (ByVal port As Integer, ByVal proto As String) As SERVENT


Declare Function GetService Lib "ws2_32" Alias "GetServiceA" (ByVal dwNameSpace As Long, ByVal lpGuid As Long, ByVal lpServiceName As String, ByVal dwProperties As Long, lpBuffer As NS_SERVICE_INFO, ByVal lpdwBufferSize As Long, ByVal lpServiceAsyncInfo As Long) As Long

Declare Function GetSockName Lib "ws2_32" Alias "GetSockNameA" (ByVal sck As Long, name As Long, ByVal namelen As Long) As Long

Declare Function getsockopt Lib "ws2_32" (ByVal sck As Long, ByVal level As Long, ByVal optname As Long, ByVal optval As Long, optlen As Long) As Long

Declare Function GetTypeByName Lib "ws2_32" Alias "GetTypeByNameA" ()

Declare Function htons Lib "ws2_32" (ByVal hostshort As Integer) As Integer

Declare Function htonl Lib "ws2_32" (ByVal hostlong As Long) As Long

Declare Function inet_addr Lib "ws2_32" (ByVal cp As String) As Long

Declare Function inet_ntoa Lib "ws2_32" (pin As IN_ADDR) As Long

Declare Function ioctlsocket Lib "ws2_32" (ByVal s As Long, ByVal cmd As Long, ByVal argp As Long) As Integer

Declare Function listen Lib "ws2_32" (ByVal s As Long, ByVal backlog As Integer) As Integer

Declare Function ntohl Lib "ws2_32" (ByVal netlong As Long) As Long

Declare Function ntohs Lib "ws2_32" (ByVal netshort As Integer) As Integer

Declare Function recv Lib "ws2_32" (ByVal s As Long, ByVal buf As String, ByVal BufLen As Integer, ByVal flags As Integer) As Integer

Declare Function recvfrom Lib "ws2_32" (ByVal s As Long, ByVal buf As String, ByVal BufLen As Integer, ByVal flags As Integer, from As SOCKADDR, fromlen As Integer) As Integer

Declare Function sockselect Lib "ws2_32" Alias "select" (ByVal nfds As Integer, readfds As FD_SET, writefds As FD_SET, exceptfds As FD_SET, timeout As TIMEVAL) As Integer

Declare Function send Lib "ws2_32" (ByVal s As Long, ByVal buf As Long, ByVal BufLen As Integer, ByVal flags As Integer) As Integer

Declare Function sendto Lib "ws2_32" (ByVal s As Long, ByVal buf As Long, ByVal BufLen As Integer, ByVal flags As Integer, sckto As SOCKADDR, ByVal tolen As Integer) As Integer

Declare Function SetService Lib "ws2_32" Alias "SetServiceA" (ByVal dwNameSpace As Long, ByVal dwOperation As Long, ByVal dwFlags As Long, lpServiceInfo As SERVICE_INFO, ByVal lpServiceAsyncInfo As Long, ByVal lpdwStatusFlags As Long) As Long

Declare Function setsockopt Lib "ws2_32" (ByVal s As Long, ByVal level As Integer, ByVal optname As Integer, ByVal optval As Long, ByVal optlen As Long) As Integer

Declare Function shutdown Lib "ws2_32" (ByVal s As Long, ByVal how As Integer) As Integer

Declare Function socket Lib "ws2_32" (ByVal iAddressFamily As Long, ByVal iType As Long, ByVal iProtocol As Long) As Long

Declare Function TransmitFile Lib "ws2_32" (ByVal hSocket As Long, ByVal hFile As Long, ByVal nNumberOfBytesToWrite As Long, ByVal nNumberOfBytesPerSend As Long, ByVal lpOverlapped As OVERLAPPED, ByVal lpTransmitBuffers As TRANSMIT_FILE_BUFFERS, ByVal dwFlags As Long) As Boolean


Const MAX_PROTOCOL_CHAIN = 7

Type WSAPROTOCOLCHAIN
ChainLen As Integer 'the length of the chain,
'length = 0 means layered protocol,
'length = 1 means base protocol,
'length > 1 means protocol chain
ChainEntries(MAX_PROTOCOL_CHAIN) As Long 'a list of dwCatalogEntryIds
End Type

Const WSAPROTOCOL_LEN = 255

Type WSAPROTOCOL_INFO
dwServiceFlags1 As Long
dwServiceFlags2 As Long
dwServiceFlags3 As Long
dwServiceFlags4 As Long
dwProviderFlags As Long
ProviderId As CLSID
dwCatalogEntryId As Long
ProtocolChain As WSAPROTOCOLCHAIN
iVersion As Integer
iAddressFamily As Integer
iMaxSockAddr As Integer
iMinSockAddr As Integer
iSocketType As Integer
iProtocol As Integer
iProtocolMaxOffset As Integer
iNetworkByteOrder As Integer
iSecurityScheme As Integer
dwMessageSize As Integer
dwProviderReserved As Integer
szProtocol(WSAPROTOCOL_LEN + 1) As Byte
End Type

Declare Function WSAAccept Lib "ws2_32" (ByVal hSocket As Long, pSockAddr As SOCKADDR, ByVal AddrLen As Integer, ByVal lpfnCondition As Long, ByVal dwCallbackData As Long) As Long

Declare Function WSAAddressToString Lib "ws2_32" Alias "WSAAddressToStringA" (lpsaAddress As SOCKADDR, ByVal dwAddressLength As Long, lpProtocolInfo As PROTOCOL_INFO, ByVal lpszAddressString As String, ByVal lpdwAddressStringLength As Long) As Long

Declare Function WSAAsyncGetHostByAddr Lib "ws2_32" (ByVal hWnd As Long, ByVal wMsg As Integer, ByVal lpNetAddr As Long, ByVal AddrLen As Long, ByVal AddrType As Long, ByVal lpBuf As Long, ByVal BufLen As Long) As Long

Declare Function WSAAsyncGetHostByName Lib "ws2_32" (ByVal hWnd As Long, ByVal wMsg As Integer, ByVal lpHostName As String, ByVal lpBuf As Long, ByVal BufLen As Long) As Long

Declare Function WSAAsyncGetProtoByName Lib "ws2_32" (ByVal hWnd As Long, ByVal wMsg As Integer, ByVal lpHostName As String, ByVal lpBuf As Long, ByVal BufLen As Long) As Long

Declare Function WSAAsyncGetProtoByNumber Lib "ws2_32" (ByVal hWnd As Long, ByVal wMsg As Integer, ByVal iNumer As Integer, ByVal lpBuf As Long, ByVal BufLen As Long) As Long

Declare Function WSAAsyncGetServByName Lib "ws2_32" (ByVal hWnd As Long, ByVal wMsg As Integer, ByVal lpServiceName As String, ByVal lpProtocolName As String, ByVal lpBuf As Long, ByVal BufLen As Long) As Long

Declare Function WSAAsyncGetServByPort Lib "ws2_32" (ByVal hWnd As Long, ByVal wMsg As Integer, ByVal iPort As Integer, ByVal lpProtocolName As String, ByVal lpBuf As Long, ByVal BufLen As Long) As Long

Declare Function WSAAsyncSelect Lib "ws2_32" (ByVal hSocket As Long, ByVal hWnd As Long, ByVal wMsg As Integer, ByVal lEvent As Long) As Integer

Declare Function WSACancelAsyncRequest Lib "ws2_32" (ByVal hAsyncTaskHandle As Long) As Integer

Declare Function WSACleanup Lib "ws2_32" () As Integer

Declare Function WSACloseEvent Lib "ws2_32" (ByVal hEvent As Long) As Boolean
Declare Function WSAConnect Lib "ws2_32" (ByVal hSocket As Long, lpSckName As SOCKADDR, ByVal iSckNameLen As Integer, ByVal lpCallerData As Long, lpCalleeData As Long, lpSQOS As FLOWSPEC, lpGQOS As FLOWSPEC) As Integer

Declare Function WSACreateEvent Lib "ws2_32" () As Long

Declare Function WSADuplicateSocket Lib "ws2_32" Alias "WSADuplicateSocketA" (ByVal hSocket As Long, ByVal dwProcessId As Long, lpProtocolInfo As WSAPROTOCOL_INFO)

Type WSANAMESPACE_INFO
NSProviderId As CLSID
dwNameSpace As Long
fActive As Boolean
dwVersion As Long
lpszIdentifier As Long
End Type

Declare Function WSAEnumNameSpaceProviders Lib "ws2_32" Alias "WSAEnumNameSpaceProvidersA" (lpdwBufferLength As Long, lpnspBuffer As Long) As Integer

Type WSANETWORKEVENTS
lNetworkEvents As Long
iErrorCode(FD_MAX_EVENTS) As Integer
End Type

Declare Function WSAEnumNetworkEvents Lib "ws2_32" (ByVal hSocket As Long, ByVal hEventObject As Long, lpNetworkEvents As WSANETWORKEVENTS)

Declare Function WSAEnumProtocols Lib "ws2_32" Alias "WSAEnumProtocolsA" (ByVal lpiProtocols As Long, lpProtocolBuffer As Long, ByVal lpdwBufferLength As Long) As Integer


Declare Function WSAEventSelect Lib "ws2_32" (ByVal hSocket As Long, ByVal hEventObject As Long, ByVal lNetworkEvents As Long)

Declare Function WSAGetLastError Lib "ws2_32" () As Integer

Type WSAOVERLAPPED
Internal As Long
InternalHigh As Long
Offset As Long
OffsetHigh As Long
hEvent As Long
End Type

Declare Function WSAGetOverlappedResult Lib "ws2_32" (ByVal hSocket As Long, lpOverlapped As WSAOVERLAPPED, lpcbTransfer As Long, ByVal fWait As Boolean, ByVal lpdwFlags As Long) As Boolean

Type WSABUF
dwBufferLen As Long
lpBuffer As Long
End Type

Type QUALITYOFSERVICE
SendingFlowspec As FLOWSPEC
ReceivingFlowspec As FLOWSPEC
ProviderSpecific As WSABUF
End Type

Declare Function WSAGetQOSByName Lib "ws2_32" (ByVal hSocket As Long, lpQOSName As Long, lpQOS As QUALITYOFSERVICE)

Declare Function WSAGetServiceClassInfo Lib "ws2_32" Alias "WSAGetServiceClassInfoA" (lpProviderId As CLSID, lpServiceClassId As CLSID, ByVal lpdwBufferLength As Long, ByVal lpServiceClassInfo As Long) As Integer

Declare Function WSAGetServiceClassNameByClassId Lib "ws2_32" Alias "WSAGetServiceClassNameByClassIdA" (lpServiceClassId As CLSID, ByVal lpszServiceClassName As String, ByVal lpdwBufferLength As Integer) As Integer

Declare Function WSAHtonl Lib "ws2_32" (ByVal hSocket As Long, ByVal dwHostLong As Long, dwNetLong As Long) As Integer

Declare Function WSAHtons Lib "ws2_32" (ByVal hSocket As Long, ByVal iHostShort As Integer, lpNetShort As Integer) As Integer

Type WSAServiceClassInfo
lpServiceClassId As CLSID
lpszServiceClassName As String
dwCount As Long
lpClassInfos As Long
End Type

Declare Function WSAInstallServiceClass Lib "ws2_32" Alias "WSAInstallServiceClassA" (lpServiceClassInfo As WSAServiceClassInfo)

Declare Function WSAIoctl Lib "ws2_32" (ByVal hSocket As Long, ByVal dwIoControlCode As Long, ByVal lpvInBuffer As Long, ByVal cbInBuffer As Long, ByVal lpvOUTBuffer As Long, ByVal bOUTBuffer As Long, lpcbBytesReturned As Long, lpOverlapped As WSAOVERLAPPED, ByVal lpCompletionROUTINE As Long)

Declare Function WSAJoinLeaf Lib "ws2_32" (ByVal hSocket As Long, lpSckName As SOCKADDR, ByVal iSckNameLen As Integer, lpCallerData As WSABUF, lpCalleeData As WSABUF, lpSQOS As FLOWSPEC, lpGQOS As FLOWSPEC, ByVal dwFlags As Long) As Long

Enum WSAEcomparator
COMP_EQUAL = 0
COMP_NOTLESS = 1
End Enum

Type WSAVersion
dwVersion As Long
ecHow As WSAEcomparator
End Type

Type AFPROTOCOLS
iAddressFamily As Integer
iProtocol As Integer
End Type

Type SOCKET_ADDRESS
lpSockaddr As Long
iSockaddrLength As Long
End Type

Type WSAQuerySet
dwSize As Long
lpszServiceInstanceName As String
lpServiceClassId As CLSID
lpVersion As WSAVersion
lpszComment As String
dwNameSpace As Long
lpNSProviderId As CLSID
lpszContext As String
dwNumberOfProtocols As Long
lpafpProtocols As Long
lpszQueryString As String
dwNumberOfCsAddrs As Long
lpcsaBuffer As CSADDR_INFO
dwOutputFlags As Long
lpBlob As BLOB
End Type

Declare Function WSALookupServiceBegin Lib "ws2_32" Alias "WSALookupServiceBeginA" (ByVal lpqsRestrictions As WSAQuerySet, ByVal dwControlFlags As SearchControlFlags, lphLookup As Long) As Integer

Declare Function WSALookupServiceEnd Lib "ws2_32" (ByVal hLookup As Long) As Integer

Declare Function WSALookupServiceNext Lib "ws2_32" Alias "WSALookupServiceNextA" (ByVal hLookup As Long, ByVal dwControlFlags As SearchControlFlags, lpdwBufferLength As Long, lpqsResults As WSAQuerySet) As Integer

Declare Function WSANtohl Lib "ws2_32" (ByVal hSocket As Long, ByVal lpNetLong As Long, lpHostLong As Long) As Integer

Declare Function WSANtohs Lib "ws2_32" (ByVal hSocket As Long, ByVal lpNetShort As Integer, lpHostShort As Integer) As Integer

Declare Function WSAProviderConfigChange Lib "ws2_32" (ByVal lpNotificationHandle As Long, lpOverlapped As WSAOVERLAPPED, ByVal lpCompletionROUTINE As Long) As Integer

Declare Function WSARecvEx Lib "ws2_32" (ByVal hSocket As Long, ByVal lpBuffers As Long, ByVal dwBufferCount As Long, lpNumberOfBytesRecvd As Long, lpFlags As Long, lpOverlapped As WSAOVERLAPPED, ByVal lpCompletionROUTINE As Long) As Integer

Declare Function WSARecvDisconnect Lib "ws2_32" (ByVal hSocket As Long, lpInboundDisconnectData As WSABUF) As Integer

Declare Function WSARecvFrom Lib "ws2_32" (ByVal hSocket As Long, ByVal lpBuffers As Long, ByVal dwBufferCount As Long, lpNumberOfBytesRecvd As Long, lpFlags As Long, lpFrom As SOCKADDR, lpFromlen As Integer, lpOverlapped As WSAOVERLAPPED, ByVal lpCompletionROUTINE As Long) As Integer

Declare Function WSARemoveServiceClass Lib "ws2_32" (lpServiceClassId As CLSID) As Integer

Declare Function WSAResetEvent Lib "ws2_32" (ByVal hEvent As Long) As Boolean

Declare Function WSASend Lib "ws2_32" (ByVal hSocket As Long, ByVal lpBuffers As Long, ByVal dwBufferCount As Long, lpNumberOfBytesSent As Long, ByVal dwFlags As Long, lpOverlapped As WSAOVERLAPPED, ByVal lpCompletionROUTINE As Long) As Integer

Declare Function WSASendDisconnect Lib "ws2_32" (ByVal hSocket As Long, boundDisconnectData As WSABUF) As Integer

Declare Function WSASendTo Lib "ws2_32" (ByVal hSocket As Long, ByVal lpBuffers As Long, ByVal dwBufferCount As Long, lpNumberOfBytesSent As Long, ByVal dwFlags As Long, lpTo As SOCKADDR, ByVal iToLen As Integer, lpOverlapped As WSAOVERLAPPED, ByVal lpCompletionROUTINE As Long) As Integer

Declare Function WSASetEvent Lib "ws2_32" (ByVal hEvent As Long) As Boolean
Declare Sub WSASetLastError Lib "ws2_32" (ByVal iError As Integer)

Enum WSAESETSERVICEOP
RNRSERVICE_REGISTER = 0
RNRSERVICE_DEREGISTER = 1
RNRSERVICE_DELETE = 2
End Enum

Declare Function WSASetService Lib "ws2_32" Alias "WSASetServiceA" (lpqsRegInfo As WSAQuerySet, essOperation As WSAESETSERVICEOP, ByVal dwControlFlags As Long) As Integer

Declare Function WSASocket Lib "ws2_32" Alias "WSASocketA" (ByVal iAddressFamily As Integer, ByVal iType As Integer, ByVal iProtocol As Integer, lpProtocolInfo As WSAPROTOCOL_INFO, ByVal lpGroup As Long, ByVal dwFlags As Long) As Long

Declare Function WSAStartup Lib "ws2_32" (ByVal wVersionRequired As Long, lpWSAData As WSADATA) As Long

Declare Function WSAStringToAddress Lib "ws2_32" (ByVal AddressString As String, ByVal AddressFamily As Integer, lpProtocolInfo As WSAPROTOCOL_INFO, lpAddress As SOCKADDR, lpAddressLength As Integer) As Integer

Public SockLastError As Long

Function sckhibyte(ByVal wParam As Integer)
sckhibyte = (wParam \ &H100) And &HFF&
End Function

Function scklobyte(ByVal wParam As Integer)
scklobyte = wParam And &HFF&
End Function

Property Get LocalHostName() As String

Dim sStr As String * 256, lStr&
Dim r&

r = gethostname(sStr, 256)
SockLastError = WSAGetLastError()

LocalHostName = Trim(Replace(sStr, vbNullChar, vbNullString))
End Property

Property Get LocalHostIP() As String

Dim sHostName$, pHostent&
Dim pHost As HOSTENT
Dim hIPAddress&, sIPAddress$
Dim abIPAddress() As Byte
Dim i%


sHostName = LocalHostName
pHostent = gethostbyname(sHostName)
SockLastError = WSAGetLastError()

If pHostent = 0 Then Exit Property

CopyMemory ByVal pHost, ByVal pHostent, ByVal LenB(pHost)
CopyMemory hIPAddress, ByVal pHost.h_addr_list, ByVal 4&

ReDim abIPAddress(1 To pHost.h_length)
CopyMemory abIPAddress(1), ByVal hIPAddress, ByVal pHost.h_length

For i = 1 To pHost.h_length
sIPAddress = sIPAddress & abIPAddress(i) & "."
Next

LocalHostIP = Left$(sIPAddress, Len(sIPAddress) - 1)

End Property

Sub SocketsInitialize()
Dim WSAD As WSADATA
Dim iReturn As Integer
Dim sLowByte As String, sHighByte As String, sMsg As String

iReturn = WSAStartup(WS_VERSION_REQD, WSAD)
SockLastError = WSAGetLastError()

If iReturn <> 0 Then
Exit Sub
End If

If LoByte(WSAD.wversion) < WS_VERSION_MAJOR Or _
(LoByte(WSAD.wversion) = WS_VERSION_MAJOR And _
HiByte(WSAD.wversion) < WS_VERSION_MINOR) Then

Exit Sub
End If

If WSAD.iMaxSockets < MIN_SOCKETS_REQD Then
Exit Sub
End If

End Sub

Function SocketsCleanup() As Long
SocketsCleanup = WSACleanup()
End Function

Function CreateSocket(ByVal SockType As SockTypes, Optional ByVal Protocol As SockProtocols = IPPROTO_TCP) As Long
CreateSocket = socket(AF_NETBIOS, SockType, Protocol)
SockLastError = WSAGetLastError
End Function

Function DestroySocket(hSocket As Long) As Boolean
DestroySocket = (closesocket(hSocket) = 0)
SockLastError = WSAGetLastError
End Function

Function GetSckName(hSocket As Long) As String
Dim sName$
Dim pSckAdd As SOCKADDR, lpAdd&
Dim r&

r = GetSockNameA(hSocket, lpAdd, LenB(pSckAdd))
SockLastError = WSAGetLastError

CopyMemory ByVal pSckAdd, ByVal lpAdd, ByVal LenB(pSckAdd)

GetSckName = Trim(Replace(pSckAdd.sa_data, vbNullChar, vbNullString))

End Function