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Sockets are already bidirectional, the trick is to know when which program should read data. Set up one to listen then connect from the other.
It turns out that 'read from socket' can be used asynchronously. You can have the handler which executes as a callback trigger another read each time in order to set up pseudo-threading of a sort, allowing your program to offer bidirectional communication over a single socket. That should solve your problem.
On Apr 15, 2005, at 8:59 AM, Ken Ray wrote:
i.e. when the accept is triggered, it supplies you with a new socket, and it's usual to use that new socket to reply to the other host.
In each app, have an accept connection - if that happens, then you receive on that socket, and send on the socket supplied by the system when the connection is accepted. (i.e. this app is acting like a "server" for the purpose of the comms).
In the app which does the first "send", you send to the other app's known socket, and receive from it. (i.e. act like a client)
OK, I understand that, and am even able to get the new socket, but how does
the app that is accepting communicate just what the new socket *is* to the
app that does the first send?
That is, if App 1 is listening (accept), and App 2 opens a socket to App 1,
App 1's accept message will trigger and I can retrieve the new socket info
in App 1. But how does that new socket get conveyed to App 2? At first, I
would have thought that it would be carried on the first parameter of the
<message> in "open socket with <message>", but when I check that port, it's
*not* the new one created by App 1; it's the original port used in the "open
socket" command.
Example:
App 1: accept connections on port 59999 with message AcceptConnected App 2: open socket "127.0.0.1:59999" with message OpenConnected App 1: --> AcceptConnected triggered on AcceptConnected pSocket put pSocket --> puts the new socket, like "127.0.0.1:50013" end AcceptConnected App 2: --> OpenConnected triggered on OpenConnected pSocket put pSocket --> puts the old socket: "127.0.0.1:59999" end OpenConnected
We're getting closer...
:-)
Ken Ray Sons of Thunder Software Web site: http://www.sonsothunder.com/ Email: [EMAIL PROTECTED]
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- ----------------------------------------------------------- Frank D. Engel, Jr. <[EMAIL PROTECTED]>
$ ln -s /usr/share/kjvbible /usr/manual
$ true | cat /usr/manual | grep "John 3:16"
John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
$
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