Re: [twsocket] Triggering DataAvailable

2011-07-27 Thread Lukáš Skála
I have very simillar situation, my clients (embedded units connected 
through GPRS) expect some sequence of bytes from server after 
connecting. Clients are able to send their data after they receive this 
starting sequence. I just send sequence of bytes in OnClientConnect 
events of server socket - it seems to work fine without any problem.

Lukas

I'm using TWSocketServer to handle multiple incoming connections from 
a client's embedded unit.


Unfortunately the remote unit has a few limitations; the main one 
being that it can establish
an IP connection to a server but cannot send data until the server 
requests it.


This means that although the OnClientConnect function gets called, 
the OnDataAvailable does not.


I had put a line of code in the OnClientConnect to trigger the 
OnDataAvailable function

but this seems to be blocking other connections.


You should not do that. OnDataAvailable is triggered when the other 
side has sent data.



My questions are:-
i)Is there a way to trigger the OnDataAvailable 
function by post a message on the socket.


No way. Well, no way that has real meaning.

ii)   Is there a better way to do this without going 
to a threaded model.


No need to go multithreaded. You said: cannot send data until the 
server requests it. This is the solution: once the embedded unit is 
connected send the request it waits. Probably the banner property is 
the place where you could place you request because banner is what the 
server component sent immediately when a client connect.


BTW and for my information, what kind of unit is this and what kind of 
request does it needs ?


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Re: [twsocket] Triggering DataAvailable

2011-07-26 Thread Arno Garrels
Paul Howes wrote:
 Hi,
 
 I'm using TWSocketServer to handle multiple incoming connections from
 a client's embedded unit. 
 
 Unfortunately the remote unit has a few limitations; the main one
 being that it can establish an IP connection to a server but cannot
 send data until the server requests it.
 
 This means that although the OnClientConnect function gets called,
 the OnDataAvailable does not.

Yes, OnDataAvailable only triggers when a client has sent something. 

 
 I had put a line of code in the OnClientConnect to trigger the
 OnDataAvailable function but this seems to be blocking other
 connections.

Why not simply request data from OnClientConnect?
  
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Arno Garrels
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Re: [twsocket] Triggering DataAvailable

2011-07-26 Thread Francois PIETTE
I'm using TWSocketServer to handle multiple incoming connections from a 
client's embedded unit.


Unfortunately the remote unit has a few limitations; the main one being 
that it can establish
an IP connection to a server but cannot send data until the server 
requests it.


This means that although the OnClientConnect function gets called, the 
OnDataAvailable does not.


I had put a line of code in the OnClientConnect to trigger the 
OnDataAvailable function

but this seems to be blocking other connections.


You should not do that. OnDataAvailable is triggered when the other side has 
sent data.



My questions are:-
i)Is there a way to trigger the OnDataAvailable 
function by post a message on the socket.


No way. Well, no way that has real meaning.

ii)   Is there a better way to do this without going to a 
threaded model.


No need to go multithreaded. You said: cannot send data until the server 
requests it. This is the solution: once the embedded unit is connected send 
the request it waits. Probably the banner property is the place where you 
could place you request because banner is what the server component sent 
immediately when a client connect.


BTW and for my information, what kind of unit is this and what kind of 
request does it needs ?


--
francois.pie...@overbyte.be
The author of the freeware multi-tier middleware MidWare
The author of the freeware Internet Component Suite (ICS)
http://www.overbyte.be

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To unsubscribe or change your settings for TWSocket mailing list
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