hi there, Ist is possible to check Single TCP Sockets for activity? I am using the Libary SDL_net which has a function called SDL_CheckSocketSet() or something like that. It checks if any of the Sockets in the set has activity. I think it uses select() internaly... I coulnd't find a similar function to check one single Socket if there is a message in the buffer waiting. Is there any? Lazzar ---------------------------------------------------------- if god gave us the source code, we could change the world! [edited by - Lazzar on June 23, 2003 10:20:10 AM]

Never used SDL, but select() on a listening socket checks for incoming connections, select() on a client socket checks for available data and (in case you use that) select() on a non blocking connecting socket checks if the connection is established. Oh yeah, depends on read/write/exception attributes too ;p (1st and 2nd are read, while the 3rd one is write).

i want to check a client socket..


but but but...
int select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);

select expects a fd_set, but i just want to check one single socket.

the way i do it now is:
create empty socket set, add socket to set, check socketset, remove socket, delete socketset.

there has to be an easier method to check a blocking client socket for activity ?

Lazzar

It''s quite simple actually, just add your single socket to the desired FD_SET and call select().

quote:

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Original post by Lazzar
the way i do it now is:
create empty socket set, add socket to set, check socketset, remove socket, delete socketset.

there has to be an easier method to check a blocking client socket for activity ?

Lazzar

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beep!
thats the way i do it now

i was hoping i could clean up my code with an easier version.

but i guess there is no other way then...

thanks anyway
Lazzar

[edited by - Lazzar on June 23, 2003 4:49:09 PM]

Look into ioctlsocket() and the FIONREAD parameter. The function allows you to determine whether any data is available for reception on a particular socket.

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