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- DWINSOCK V1.0
- -------------
-
- A Windows Socket interface component for use with Borland Delphi.
-
- By Ulf S÷derberg
- ulfs@sysinno.se
-
- This is a short description of the DWinSock component for Borland Delphi
- that is contained in the file DWINSOCK.ZIP.
-
- I am going to create a Delphi installable help file sometime soon.
- For now, you have to rely on this description and on the contents of the
- source files.
-
- FILE CONTENTS
- -------------
- Files that originally came from PASOCK10.ZIP that has been changed by me:
- WINSOCK.INC Part of the old WINSOCK.PAS (included in DWINSOCK.PAS)
- WINSOCK.IF Part of the old WINSOCK.PAS (included in DWINSOCK.PAS)
- WINSOCK.IMP Part of the old WINSOCK.PAS (included in DWINSOCK.PAS)
- ERROR.INC Part of the old WINSOCK.PAS (included in DWINSOCK.PAS)
-
- Original work by myself:
- DWINSOCK.RES Contains two bitmaps for the controls, just blank bitmaps now.
- DWINSOCK.DCR Contains two component palette bitmaps (very Q&D).
- DWINSOCK.PAS The source code of the component.
- DWINSOCK.DCU The compiled unit.
-
- THE COMPONENTS IN DWINSOCK
- --------------------------
- DWinSock contains two components which I have named TClientSocket and
- TServerSocket. As the names implies, they are to be used in client or
- server applications.
-
- TClientSocket Properties
- Host name of remote host, a string
- Address address of remote host, a string like '127.0.0.1'
- Port port number, an integer
- Service name of port, a string
- Conn current TSocket
- Description name of underlying WinSock
- Text send or receive a string
- BytesSent get number of bytes sent after last assign to Text
-
- TClientSocket Methods
- LocalHost name of yourself
- Reverse reverse lookup an address
- Open do a connect
- Close the opposite
- SendBuf send a buffer
- RecvBuf receive a buffer
-
- TClientSocket Events
- OnInfo progress indication
- OnConnect
- OnDisconnect
- OnRead incoming data
- OnWrite out buffer empty
-
-
- TServerSocket Properties
- Port port number, an integer
- Service name of port, a string
- Conn current TSocket
- Description name of underlying WinSock
- Client default array prop. to get TSocket of a connected client
-
- TServerSocket Methods
- LocalHost name of yourself
- Reverse reverse lookup an address
- Listen listen for incoming connections
- Close the opposite
- SendBuf send a buffer
- RecvBuf receive a buffer
-
- TServerSocket Events
- OnInfo progress indication
- OnAccept incoming connection accepted
- OnDisconnect connection closed
- OnRead incoming data
- OnWrite outuf empty
-
- OTHER OBJECTS
- -------------
- Both TClientSocket and TServerSocket uses an object called TSocket which contains
- the connection status like ip address and port number. TSocket has several
- methods that you may call, they are:
-
- LookupName convert a host name to an IP address.
- LookupService convert a service name to a port number.
- LocalAddress return your address for a connection.
- LocalPort return your port number for a connection.
- RemoteHost return the remote host name.
- RemoteAddress return the remote IP address.
- RemotePort return the remote port number.
-
- EXCEPTIONS
- ----------
- If anything goes wrong inside you will get an exception of type ESockError with
- a message indicating what kind of error that cause the exception.
-
- SUMMARY
- -------
- This was a very brief description of DWINSOCK. As you can see from the source
- files it does not at all use all functions of Windows Sockets but it may
- provide a quick solution to get into WinSock programming with Delphi.
-
- I have included a sample application called NETTIME that is a time client.
- It gets the current time of day from a time server.
-
- You may use DWINSOCK any way you like but don't blame me.
-
- Suggestions may be emailed to ulfs@sysinno.se
-