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Server Sockets

Posted on 1998-06-25
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Last Modified: 2010-04-04
I'm working on this chat program using serversockets
I can get mutilple connetions to the server part but when i send a message from a client  i cant relay the message to the other connections.
How do i change to a different socket connection to send out  the message?
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Question by:bbreaux
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Author Comment

by:bbreaux
ID: 1355752
Edited text of question
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Expert Comment

by:BoRiS
ID: 1355753
bbreaux

have you checked out the chat demo that comes with delphi...

Later
BoRiS

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Expert Comment

by:fromager
ID: 1355754
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3 Use Cases for Connected Systems

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Author Comment

by:bbreaux
ID: 1355755
yes i have look at the example but it doesnt allow for mutiplte connections only pier to pier
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Accepted Solution

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d003303 earned 100 total points
ID: 1355756
Yo,
you will have to hold a list of all connected clients that is updated in the OnClientConnect and OnClientDisconnect event handlers. Use AddObject(IntToStr(Socket.SocketHandle), Socket) to save the object in the string list. When a client disconnects, use Delete(IndexOfName(IntToStr(Socket.SocketHandle)) to remove him from the list.
To broadcast the incoming message, loop through the list and send all clients the message data (maybe you want to leave out the sender).

Slash/d003303
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Author Comment

by:bbreaux
ID: 1355757
I have a array or records
could i just asign the sockethandle to a varible in my record

example:
 
myrecoord.handle :=socket.sockethandle

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Author Comment

by:bbreaux
ID: 1355758
I have a array or records
could i just asign the sockethandle to a varible in my record

example:
 
myrecoord.handle :=socket.sockethandle

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Author Comment

by:bbreaux
ID: 1355759
that works great next to the fact i cant figure out how to loop over the list and send to that user
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Expert Comment

by:d003303
ID: 1355760
You could also use an array of records for that. I recommend a string list because it can hold a variable amount of users at run-time. With the array, you are limited to the arrayy bounds that is set at compile-time.
Loop throug the list with
for index := 0 to UserList.Count - 1
 do BroadcastMessage(TSocket(UserList.Objects[index]), Message);
where BroadcastMessage would send the chat message. You can cast UserList.Objects[index] to the appropriate socket you received if you need to.

Slash/d003303
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Author Comment

by:bbreaux
ID: 1355761
I get an error when i use Broadcastmessage

undeclared identifier

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Author Comment

by:bbreaux
ID: 1355762
i got it working thanks for the help
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